When to pick hot peppers

Plus suggestions for storing, curing, fermenting, pickling, and ranking your hot peppers

Hot Peppers

So just when do you pick those hot peppers?

To determine when hot peppers are ready to be picked requires observation of the peppers color, size, firmness, and (for some varieties) corking. They can be harvested green or fully ripe, depending on the variety and the flavor/heat level you’re looking for.

Primary signs of readiness

  • Color change: Most start green and turn their mature color (red, orange, yellow, etc.). This is the clearest sign of full ripeness. Fully colored peppers generally have better flavor, more sweetness, and higher heat (more developed capsaicin). Peak heat often occurs just as they begin changing color.
  • Full size: The pepper has reached the expected mature size for its variety (check the seed packet) and has stopped growing larger. Homegrown ones may be a bit smaller than store-bought.
  • Firmness and feel: The pepper should feel firm (not soft or wrinkled, unless slightly soft when fully ripe on some types). It often pulls or snaps off the plant more easily when ready.
  • Corking (common on jalapeños and some other hot peppers): These look like white/tan/brown stretch marks or fine cracks on the skin. They form when the pepper grows faster than its skin can stretch. Corking is normal, harmless, and often signals maturity, good flavor, and higher heat. Many growers prefer corked jalapeños.

Variety-specific considerations

  • Jalapeños: Often picked green (deeper green color, full size, ideally with some corking) for the classic savory/smoky flavor. They can turn nearly black then bright red; red ones are sweeter and can be hotter. Wait 1–2 weeks after full size if picking green.
  • Habaneros: Best when fully colored (usually bright orange or red, depending on the type). Green ones lack the full floral flavor and heat—be patient.
  • Cayenne and similar thin/hot types: Harvest when fully bright red for best flavor and heat. Green ones are milder and less flavorful.
  • Other hot peppers (serranos, Thai, superhots like ghost/reaper, etc.): Follow the color change for maximum quality. Superhots take the longest (often 100–150+ days from transplant).

Peppers are edible at any stage once fully formed, but green ones are typically less sweet, more bitter, and milder in heat. Fully ripe ones have more nutrients (like carotenoids) and better developed flavor.

Harvesting suggestions

  • Use clean pruners/scissors or gently twist/pull upward while supporting the plant to avoid damaging stems/branches. Leave a short stem attached if possible.
  • Wear gloves with very hot varieties—capsaicin oil can irritate skin and eyes.
  • Pick regularly as they ripen. This encourages the plant to keep producing more fruit.
  • Before frost: Harvest everything (even unripe full-sized ones). Fully formed peppers can finish ripening somewhat indoors; tiny ones usually won’t.

Timing reference: Most hot peppers take roughly 70–100+ days from transplant to first ripe fruit (longer for superhots), under good conditions. Individual peppers on the same plant ripen at different times.

Check your specific variety’s expected mature color and size for the best results. Experiment by picking some at different stages to see what you prefer.

Visit Pepper Geek for all you need to know about peppers.


Short-term Pepper Storage

Hot peppers should be refrigerated if you want to keep them fresh for more than a few days.

  • Counter (1–3 days): Fine only if you plan to use them immediately. Keep them in a cool, dry spot out of direct sunlight.
  • Refrigerator (1–3 weeks): Ideal storage temperature is between 40°F and 45°F. 

Best Practices for Storing Hot Peppers in the Fridge

  • Do not wash them beforehand: Moisture encourages mold and rotting. Only wash them right before you are ready to cook or eat them.
  • Keep stems attached: Leaving the stems intact helps prevent early decay.
  • Use a breathable bag: Place whole peppers inside a perforated plastic bag or a breathable paper bag. Keep them in the crisper drawer.
  • Store cut peppers separately: Sliced or chopped hot peppers should go into an airtight container lined with a dry paper towel and used within 3 to 4 days

Freezing Hot Peppers

Unlike many vegetables, hot peppers don’t need to be blanched before freezing. Their color and flavor hold up well with just the basic prep and freezing steps.

Preparation Steps

  • Wash and dry: Clean the peppers thoroughly in water and pat them 100% dry with a towel so they do not stick together with ice.
  • Choose whole or cut: Leave small hot peppers (like jalapeños or serranos) whole with stems trimmed, or slice larger hot peppers in halves or slices with stems and seeds removed.

Freezing Methods

  • Direct Freeze: Place whole or pre-cut peppers straight into a heavy-duty ziploc freezer bag.
  • Flash Freezing: Lay cut pepper pieces in a single layer on a parchment-lined baking sheet for one hour until frozen solid, then transfer them to a bag to prevent clumping.
  • Remove Air: Squeeze out as much excess air as possible before sealing the bag tightly to prevent freezer burn.

Curing Hot Peppers

Curing harvested hot peppers primarily means drying them thoroughly so they store well for months or years without molding. Properly dried peppers can be used whole, ground into flakes or powder, or reconstituted later.

Thinner-skinned varieties (cayenne, Thai, tabasco, pequin, etc.) dry most easily. Thicker-walled ones (jalapeños, habaneros, poblanos) need more care—slice them open for better results and lower mold risk.

Preparation

  • Harvest fully ripe peppers (or near-ripe) and wash them in warm water.
  • Pat completely dry.
  • Wear gloves, especially with hot varieties—capsaicin can irritate skin and eyes.
  • Leave stems on for hanging methods; remove or leave as preferred for trays.

Main Drying Methods

1. Food Dehydrator (fastest and most reliable)

  • Slice larger/thicker peppers in half lengthwise (seed side up is fine). Leave small thin peppers whole.
  • Arrange in a single layer with space for airflow.
  • Set to 125–135°F (about 52–57°C).
  • Dry 4–12+ hours (check periodically; thinner pieces finish sooner). They’re done when brittle or leathery and snap when bent.
  • Suggestion: Do this in a garage, outdoors, or well-ventilated area—hot peppers release airborne capsaicin that can irritate eyes, throat, and lungs.

2. Air / Hang Drying (traditional, low-effort)
Best in dry climates with low humidity and good airflow. Humid areas risk mold.

  • Thread a needle with strong string, twine, fishing line, or dental floss.
  • Push the needle through the stems and space the peppers slightly for air circulation.
  • Hang in a warm, dry, well-ventilated spot (indoors near a window or outdoors in shade/sun if dry and protected from rain).
  • For a decorative ristra, bunch them more tightly or create a classic hanging string.
  • Takes 2–6 weeks (or longer). They’re ready when fully dry, wrinkled, and brittle.
  • Thin-walled peppers work best this way.

3. Oven Drying

  • Preheat to the lowest setting, ideally 125–150°F (or as low as your oven goes). Prop the door open slightly with a wooden spoon or foil ball for moisture escape.
  • Slice thicker peppers; leave small ones whole. Place seed-side up on a parchment-lined baking sheet or cooling rack in a single layer.
  • Dry several hours, rotating/flipping every 30–60 minutes. Watch closely to avoid cooking or burning.
  • Done when brittle.

4. Sun / Passive Air Drying

  • In arid, hot climates: spread on screens, trays, or racks in full sun (or a sunny window), turning regularly. Cover lightly to keep dust off.
  • Small thin peppers can dry on a plate or cooling rack indoors in a warm, dry spot.
  • Takes 1–3 weeks; bring indoors at night or if humidity rises.

When They’re Fully Cured/Dry

Peppers should feel completely dry, brittle (or leathery for some thicker types), and snap cleanly. Any softness or flexibility means residual moisture that can cause mold in storage.

Storage

  • Cool completely.
  • Store whole in airtight glass jars or sealed bags in a cool, dark, dry place.
  • Properly dried peppers keep 6–12 months or longer (flavor fades over time).
  • For powder/flakes: grind with a spice grinder, coffee grinder (dedicated if possible), mortar and pestle, or in a bag with a rolling pin. Work in a ventilated area or outdoors—powder is intense.

A few additional thoughts

  • Discard any that show mold, soft spots, or off smells during drying.
  • Fully dried peppers can be left hanging as decor and plucked as needed.
  • Other preservation options (if you don’t want to dry): freeze, pickle, make hot sauce/jelly, or ferment (see below).
  • Drying concentrates flavor and heat.

Fermented Hot Peppers

Fermenting hot peppers into hot sauce (lacto-fermentation) creates complex, tangy, probiotic-rich sauce with deeper flavor than quick vinegar-based versions. The natural lactic acid bacteria on the peppers convert sugars into lactic acid, lowering pH and preserving the mix while developing funky, fruity notes.

Two main approaches exist: brine fermentation (peppers submerged in salted water—easier for beginners, lower mold risk) and mash fermentation (chopped/salted peppers with little or no added water—more intense, concentrated flavor).

Basic Ingredients & Salt Ratios

  • Fresh ripe hot peppers (any variety or mix; wash gently but don’t scrub off natural bacteria).
  • Non-iodized salt (sea salt, kosher, or Himalayan—avoid table salt with iodine or anti-caking agents).
  • Optional: garlic, onion/shallot, carrot (adds sweetness and aids fermentation), fruit (mango, pineapple), spices.
  • Filtered or dechlorinated water (chlorine can hinder fermentation).

Salt guidelines (by weight is most accurate):

  • Brine method: 2.5–5% salt relative to the water (3–3.5% is a popular sweet spot). Example: 30–35 g salt per 1,000 g (1 liter) water.
  • Mash method: 2–3% salt relative to the weight of the peppers (and any other solids).
  • Higher salt (around 5%) slows fermentation and helps longer storage; lower salt ferments faster but needs closer monitoring.

Equipment

  • Clean glass jars (mason jars work well).
  • Fermentation weights, a small jar, or a cabbage leaf + zip-bag of brine to keep solids submerged.
  • Optional: airlock lids or loose lids (you must “burp” daily).
  • Blender or food processor for the finished sauce.
  • Gloves (recommended for hot varieties).

Step-by-Step: Brine Method (Beginner-Friendly)

  1. Roughly chop or leave peppers whole (remove stems; seeds optional for extra heat). Add garlic, sliced carrot, etc. if desired.
  2. Pack into a clean jar, leaving 1–2 inches headspace.
  3. Dissolve salt in filtered water to make your brine (e.g., 1¼ tsp fine sea salt per cup of water ≈ 3%).
  4. Pour brine over the peppers until fully submerged. Weigh everything down so nothing floats above the liquid.
  5. Cover loosely (or use an airlock). Place the jar in a bowl to catch overflow.
  6. Ferment at room temperature (ideally 65–75°F / 18–24°C) in a spot out of direct sun for 5–14 days (or longer—up to several weeks).
    Signs of healthy fermentation: bubbles, cloudy brine, pleasant sour/tangy smell.
    Burp the jar daily if using a solid lid. Skim any white kahm yeast (harmless) if it appears; discard if you see colorful mold or foul smells.
  7. Once it tastes pleasantly sour and the peppers have softened, strain (save the brine). Blend the solids with some of the reserved brine until smooth. Adjust thickness with more brine. Optional: add a splash of vinegar (apple cider or white) for extra tang and shelf stability, plus herbs/spices to taste.
  8. Bottle and refrigerate. It continues to develop slowly in the fridge and keeps for many months (often indefinitely if acidic enough).

Step-by-Step: Mash Method (More Intense Flavor)

  1. Finely chop or roughly blend the peppers (and any add-ins).
  2. Weigh the mixture and mix in 2–3% salt by weight. The salt will draw out liquid.
  3. Pack tightly into a jar, pressing down so the released liquid covers the mash. Top with a weight or plastic wrap pressed against the surface to minimize air contact.
  4. Ferment the same way as above (1–4 weeks). Monitor for mold more carefully—spraying the surface lightly with vinegar can help prevent it.
  5. Blend the finished mash with a bit of the liquid (or added water/vinegar) to sauce consistency.

Finishing & Storage Tips

  • Taste as you go—fermentation mellows heat over time.
  • For a thinner Louisiana-style sauce, blend with more brine or vinegar. For thicker sauces (Sriracha-like), use less liquid or add a bit of xanthan gum if desired.
  • Refrigerate the finished sauce. Leave lids slightly loose or use bottles that can vent, as it may continue producing gas.
  • pH ideally drops below 4.0–4.6 for safety (optional testing strips help). Adding vinegar after fermentation boosts acidity and stability.
  • Always start with clean equipment and keep solids under the liquid during fermentation.

Troubleshooting

  • No activity after a few days → check salt level (too high kills bacteria), water quality, or temperature (too cold slows it).
  • Mold → usually from floating solids exposed to air. Start over if mold is colored or fuzzy and widespread.
  • Too salty or too hot at first → it often mellows after a week or two in the fridge.

Fermented hot sauce is very forgiving once you get the salt and submersion right. Start with a small batch of milder peppers (or mix in some bell peppers) to learn the process. The result is a living, flavorful sauce that improves with a bit of age in the fridge. Enjoy experimenting with different pepper varieties and add-ins!


Pickled Hot Peppers

Produces 4 Pint jars of Pickled Peppers

Ingredients

  • 2 lb hot peppers
  • 8 cloves garlic, crushed, peeled
  • 1 tbsp whole black peppercorns
  • 8 allspice berries
  • 2 bay leaves
  • 1 1/2 cups apple cider vinegar
  • 1 cup white wine vinegar
  • 2 1/2 cups water
  • 2 tbsp kosher salt
  • 2 tsp white sugar
  • 1/4 cup olive oil

Instructions

  • Divide the garlic, black peppercorns, allspice berries and bay leaves equally between four pint mason jars.
  • Cut your peppers into rounds, or if pickling whole, slice a slit length-wise down the pepper.
  • Stuff the jars full of peppers.
  • Combine the vinegars, water, salt and sugar in a sauce pan. Bring to a boil. Whisk to dissolve salt and pepper.
  • Divide the vinegar solution among the four jars, filling to 1/2″ below the rim. Top each jar with a tablespoon of olive oil.
  • Cover the jars with two piece lids. Process the jars for 10 minutes in a boiling water bath.
  • Store for three weeks before eating. Refrigerate after opening.

Hot Sauce Recipes


Scoville Pepper Heat Rankings

The Scoville scale measures the capsaicin concentration of chili peppers using Scoville Heat Units (SHU).

The original test was created in 1912 by pharmacist Wilbur Scoville, who mixed pepper extract with sugar water and fed it to a panel of tasters to determine when they could no longer detect the pepper’s heat. The score reflects how many times the extract needed dilution in water. For example, diluting one drop of pepper extract 5,000 times translates to 5,000 SHU. Today, modern labs use high-performance liquid chromatography (HPLC) to measure exact capsaicinoid levels instead of human taste buds.

Pepper Rankings

The current world record holder for the hottest pepper is Pepper X at 2,693,000 Scoville Heat Units (SHU).

These peppers are classified as “super-hots” and are typically handled with gloves.

  • Pepper X: 2,693,000 SHU (Current Guinness World Record Holder)
  • Dragon’s Breath: ~2,480,000 SHU
  • Carolina Reaper: 1,400,000 to 2,200,000 SHU
  • Komodo Dragon: 1,400,000 to 2,200,000 SHU
  • Trinidad Moruga Scorpion: 1,200,000 to 2,000,000 SHU
  • Ghost Pepper (Bhut Jolokia): 855,000 to 1,041,427 SHU

Popular in Caribbean cooking, these varieties offer an intense, sudden burst of heat.

  • Red Savina Habanero: 350,000 to 580,000 SHU
  • Scotch Bonnet: 100,000 to 350,000 SHU
  • Habanero: 100,000 to 350,000 SHU

Commonly dried into spices, flaky seasonings, or used raw in hot sauces.

  • Thai Pepper (Bird’s Eye): 50,000 to 100,000 SHU
  • Cayenne Pepper: 30,000 to 50,000 SHU
  • Tabasco Pepper: 30,000 to 50,000 SHU
  • Serrano Pepper: 10,000 to 25,000 SHU

Everyday culinary peppers providing flavor with minimal to manageable spice.

  • Fresno Chili: 2,500 to 10,000 SHU
  • Jalapeño: 2,000 to 8,000 SHU
  • Poblano (Ancho): 1,000 to 2,000 SHU
  • Pepperoncini: 100 to 500 SHU
  • Bell Pepper: 0 SHU

Garlic Harvest

Ready to harvest your garlic? If the top two leaves of your hardneck garlic stalks have turned brown it’s time to dig them up.

To avoid damaging the garlic bulbs, we use a decent sized trowel and place it in the ground about three inches from the garlic plant’s stalk. With a gentle tug, we pull up on the stalk while simultaneously tilting the trowel back and allowing the bulb to pop free.

Don’t wash the bulbs, just knock off any large clumps of soil. Place the harvested garlic in a single layer or hang them in small bundles. They need a warm but shaded spot that is well-ventilated. A covered porch, shed, or garage are ideal.

Once the stems and roots are entirely brown and crisp, the garlic is ready to be trimmed. Cut the stems about one to two inches above the bulb and trim the roots to about 1/4 inch.

Store the cured bulbs in a cool, dark, and dry location with good air circulation (typically a mesh bag). Hardneck garlic can be stored for two to four months, but in the right conditions it may last longer.

Happy Harvesting!

The White House Conservatory

White House Conservatory

No, your eyes don’t deceive you.

Purportedly through the encouragement of Harriet Lane (1830–1903), neice and acting First Lady to President James Buchanan, a grand conservatory was built on the White House grounds in 1857.

The White House Conservatory was considerable turn from Thomas Jefferson’s vision of the White House gardens and grounds that he drew up between 1802 and 1805 and largely served as a model for future undertakings.

Alas, the extensive conservatory was short lived. The glasshouses were torn down in 1902 to make way for construction of the West Wing office complex. Ah bureaucracy!

The pattern of construction and destruction has continued to this day. Theodore Roosevelts wife Edith had a “Colonial Garden” built on the east side of the White House between 1902 and 1903. Ten years later, Woodrow Wilson’s wife Ellen, had the Colonial Garden torn out and replaced with what has come to be known as the White House “Rose Garden”.

White House Conservatory Interior

Harriet Lane in the White House Conservatory
White House Rose Garden

The original Rose Garden, 1913

This post was written for the summer issue of the Webster Museum’s Penny Farthing newsletter.

Quickies

Ask Zoe

Short answers to some of your recent questions

Hi Zoe,

I’ve had a wisteria growing in my garden for close to 7 years now, and it still hasn’t flowered. Any guesses?

Marty C.

Hi Marty,
Despite the 7 years, in many cases the wisteria plant is still too young to flower. Grafted wisteria plants will flower much sooner than wisteria grown from seed. It’s usually best to buy a wisteria plant when its flowering to avoid endless annual anticipation.

Other issues could be a lack of sunlight (Wisteria loves to sunbathe!), poor soil health, or improper pruning.

Hope it flowers soon!

Hi Zoe,

Can I grow a new clematis from cuttings?

Cynthia H.

Hi Cynthia,
Yes! Select a a stem in with healthy new growth, cut it just below a leave node preserving one leaf and about a 3 to 4 inch of stem.

Brush a small amount of rooting hormone on the lower end of the cutting. Prepare a small pot with damp, sandy potting soil.

Using a pencil or similar, create a vertical hole in the soil deep enough to accommodate your stem. Place the stem in the soil and cover the pot with a plastic sandwich bag. Place in indirect sunlight, keeping the soil damp, but not too wet.

Allow the cutting to overwinter in a protected area below 40 degrees. With any luck, you’ll be planting your new clematis in the garden come spring.

Happy Growing!

Zoe,

Can you recommend a zero-turn lawn mower?

Carol J.

Hi Carol,
I could…but it would be utterly pointless as I don’t own one.

Zoe,

Is it too late to plant poppies?

Mary R.

Hi Mary,
Unfortunately, June is likely a bit late to be planting poppies. Poppies need at least a couple weeks of cold in order to germinate. Most garden centers don’t carry perennial varieties until the fall. I’d suggest waiting until then. Annual seeds can be scattered on top of the soil in late fall or early spring. Perennials will benefit from over wintering in your garden.

Hi Zoe,

Where do you buy your plants?

Renee M.

Hi Renee,
It’s always a pleasure to explore our local garden centers. In Webster I’m fond of Bauman’s, but if I’m on the road I seldom miss a chance to stop at the Garden Factory or Sara’s in Brockport.

Have a question? Ask Zoe.

Scarlet Lily Beetles

Hey Zoe,

For the past few weeks I’ve noticed these bright red beetles on my lilies causing all kinds of damage. What should I do?

Lucy W.

Hi Lucy,
What you are likely seeing is the Scarlet Lily Beetle (Lilioceris lilii). While attractive at first glace, scarlet lily beetles are horribly destructive. They first appeared in New York State around 2012 after being accidentally imported to Canada in the late 1940s.

Scarlet lily beetles and their larvae, can defoliate Asiatic, Oriental, Martagon and similar lily species, causing strain to the plant and adversely affecting its appearance. At least they don’t bother daylilies.


Update – June 2026

This year we’ve been applying a product called Captain Jack’s Deadbug Brew. It contains a naturally occurring bacteria called Spinosad which kills the insect when sprayed leaves are consumed. With neem oil and other methods, its important to get to the underside of the leaves where the larvae are. With Captain Jack’s Deadbug Brew spraying the tops of the leaves should suffice. The best part to me, is it has to be consumed to kill the insect. You don’t have to spray it on the insects themselves. As pollinators don’t eat lily leaves, they are unaffected. (Please avoid spraying the lilies flowers.)

It still takes persistence. The spray should be reapplied after rain once the leaves dry, and weekly otherwise. I have a little lily damage this year, but not enough to damage the beauty or health of the plant.


Here are hopefully a few effective organic methods to manage scarlet lily beetles.

Identification and Timing

  • Appearance: Adults are 6–8 mm long, bright red with black heads, legs, and undersides. They drop and flip upside down when disturbed, blending into soil. Larvae are orange-brown, slug-like, and cover themselves with black excrement, feeding voraciously on leaf undersides.
  • Lifecycle: Adults emerge in early spring (April–May), lay 250–450 red eggs in rows on leaf undersides, and larvae hatch in 4–8 days, feeding for 16–24 days before pupating in soil. A second generation may appear in mid-summer. They overwinter as adults in soil or debris.
Scarlet Lily Beetle
Soapy Water

Organic Control Methods

Hand-Picking:

  • Tools: An old pickle or jam jar filled with warm soapy water and a medium sized artist’s paint brush.
  • How: Check plants early morning when beetles are sluggish. When you spot a beetle or larvae on a lily leaf, hold the jar of soapy water beneath the leaf and brush the beetle into the water. Works well for Japanese Beetles infestations as well.
  • Frequency: Every 2–3 days, focusing on undersides and leaf-stem junctions.

Egg and Larvae Removal:

  • How: Inspect leaf undersides for red egg rows and larvae. Remove with a brush in a similar manner. Don’t touch the larvae, their excrement coating is gross!
  • Frequency: Twice weekly during June–July when eggs and larvae peak.

Traps and Barriers:

  • Grapefruit Rinds: Place rinds near lilies to attract beetles, check daily, and dispose of in warm soapy water. This could double as a slug control.
  • Diatomaceous Earth (DE): Sprinkle food-grade DE around lily bases (1-inch band). It dehydrates beetles and larvae on contact. Reapply after rain.

Encourage Natural Predators:

  • How: Attract birds (e.g., via a birdbath or feeder), frogs, or ground beetles by avoiding pesticides. Parasitoid wasps (e.g., Tetrastichus setifer) are being introduced in some areas and may eventually reach NY, targeting beetle larvae.

Neem Oil (I don’t use it, but if you’re short on time):

  • How: Apply neem oil (mixed with water and a drop of soap) every 5–7 days, covering all leaf surfaces, especially undersides. Continue through the summer.
  • Caution: Use early morning or late evening to avoid harming pollinators. Test on a small area first.
  • Does it work?: Some report limited success.

Additional Tips

  • Sanitation: Remove plant debris and loosen the top 2–3 inches of soil around lilies after the first frost (October) to disrupt overwintering adults.
  • Resistant Varieties: If damage persists, consider lilies like ‘Defender Pink’ or species like Lilium henryi ‘Madame Butterfly’, which show some resistance. Avoid replacing all lilies—your garden’s diversity is a strength.
  • Avoid Chemicals: Insecticides (e.g., permethrin) work but could also harm birds and beneficial insects.

Reality Check

Hand-picking is labor-intensive but effective for a small garden. Some gardeners report cyclical declines after years of diligence, suggesting persistence pays off. If beetles overwhelm despite efforts, reducing lily numbers or switching to resistant types might be pragmatic, though it’s a last resort given their beauty.

Have a question? Ask Zoe.

Yellowing Tomato Leaves

Ask Zoe

Hi Zoe,

Why are the lower leaves on my tomato plants turning yellow? I’ve been growing tomatoes for years and don’t remember my tomatoes ever doing this.

Yvonne T.

Hi Yvonne,
Given the current warm weather and recent May-June rains, its possible the yellowing could be a result of overly saturated soil.

That said, its not uncommon for the lower leaves of tomato plants to naturally yellow as plant resources are directed toward new growth.


In a more typical, less rainy spring, yellowing lower leaves on your tomato plants could be due to several common issues.

Yellowing Tomato Leaves

Possible Causes

Natural Aging:

  • Reason: Lower leaves naturally yellow and drop as the plant matures, redirecting energy to fruit production. This is normal, especially mid-season (June).
  • Check: If only the oldest, bottom leaves are affected and the plant looks healthy otherwise (green upper leaves, fruit setting), it’s likely not a problem.
  • Action: Trim yellow leaves with clean shears to improve airflow, but don’t overdo it—remove no more than 1/3 of foliage.

Watering Issues:

  • Overwatering: Excess moisture from recent rains or overzealous watering can cause root rot, leading to yellowing. Tomatoes prefer consistent moisture but dislike soggy soil.
  • Underwatering: Dry spells between rains can stress plants, causing lower leaves to yellow first.
  • Check: Soil should be moist 1–2 inches deep but not waterlogged. Test by sticking a finger in—if it’s soggy or bone-dry, adjust.
  • Action: Water 1–2 inches per week if rain is insufficient, ensuring good drainage (e.g., raised bed edges). Mulch with straw or black mulch to retain moisture.

Nutrient Deficiency:

  • Nitrogen: Lack of nitrogen causes yellowing, starting at lower leaves, as it’s pulled upward for new growth.
  • Check: Pale yellow leaves with stunted growth suggest nitrogen deficiency. Soil test kits (available at Garden Factory) can confirm.
  • Action: Apply a balanced fertilizer (e.g., 10-10-10) or compost. Avoid over-fertilizing, which can burn roots.

Disease:

  • Early Blight: Common in humid climates like Webster, this fungal issue (Alternaria solani) causes yellowing with brown spots and concentric rings on lower leaves.
  • Fusarium or Verticillium Wilt: These fungal diseases block water uptake, yellowing leaves and wilting stems. Look for wilting despite moist soil.
  • Check: Inspect for spots or wilting. Early blight thrives in wet foliage; wilts show vascular browning if stems are cut.
  • Action: Remove affected leaves (bag and discard, don’t compost). Use fungicide (e.g., copper-based) if severe, and space plants 2–3 ft apart for airflow. Rotate crops next year.

Pests:

  • Aphids or Whiteflies: These can suck sap, weakening leaves and causing yellowing.
  • Check: Look under leaves for tiny bugs or sticky residue.
  • Action: Spray with neem oil or insecticidal soap. Encourage ladybugs or lacewings.

Here in Webster

  • Weather: Recent rains may have oversaturated soil, especially if drainage is poor. Check your bed’s slope or add organic matter to improve it.
  • Soil: Webster’s clay-heavy soil can retain too much water, exacerbating root issues. Mixing in sand or compost could help.

Next Steps

  • Prioritize: Start with watering and aging checks—most likely culprits. If persistent, inspect for disease or pests.
  • Monitor: Yellowing should stabilize with proper care. If it spreads upward or includes wilting, suspect disease.
  • Prevention: Stake plants to lift foliage, reducing soil contact and disease risk.

Hope this helps!
Zoe

Have a question? Ask Zoe.

Planting Dahlias

With their stunning and long lasting blooms, Dahlias are a stunning addition to any garden. The middle of May is prime planting time for dahlias, as the last frost has passed (typically early May in Webster), and soil temperatures are above 60°F—perfect for these tender perennials.

1. Planting

  • Timing: Plant now (mid-May) to ensure blooms by late summer (July–September). Dahlias need warm soil (60°F+), and nighttime temps should stay above 50°F, which they are in Webster this time of year.
  • Starting: Use tubers (not seeds) for faster results. Look for firm tubers with visible “eyes” (growth points).
  • Soil: Dahlias need well-drained, loamy soil (pH 6.5–7.0). Webster’s clay-heavy soil benefits from mixing in compost and sand or perlite. Dig a hole 6–8 inches deep, lay the tuber horizontally with the eye facing up, and cover with 2 inches of soil. As the sprout grows, gradually fill the hole.
  • Spacing: Space tubers 1–2 ft apart (1 ft for dwarfs, 2 ft for larger varieties). Plant 1–2 tubers to avoid overcrowding.

2. Watering and Feeding

  • Watering: Keep soil consistently moist but not soggy—about 1 inch per week. Water at the base to avoid wetting leaves, reducing powdery mildew risk (common in Webster’s humid summers). Once established, dahlias are somewhat drought-tolerant but don’t let them dry out completely.
  • Mulching: Add 2 inches of straw or shredded bark mulch to retain moisture and keep soil cool. Keep mulch away from stems to prevent rot.
  • Fertilizing:
  • At planting: Mix in a low-nitrogen fertilizer (e.g., 5-10-10) to promote blooms over foliage.
  • Monthly: Side-dress with a balanced fertilizer (e.g., 10-10-10) or compost tea until blooming starts (July). Too much nitrogen causes leafy growth at the expense of flowers.

3. Support and Pruning

  • Staking: Most dahlias (except dwarfs) need support, as stems can snap in summer storms. Install a 4–6 ft stake or cage at planting time. Tie stems loosely with garden twine as they grow.
  • Pinching: When plants reach 12–18 inches tall (around June), pinch the top growth above the fourth set of leaves. This encourages bushier growth and more blooms.
  • Deadheading: Remove spent flowers weekly to promote continuous blooming through September. Cut back to the nearest set of leaves.

4. Pest and Disease Management

  • Slugs: Slugs love tender dahlia shoots. Use your grapefruit traps near dahlias, and add a ring of diatomaceous earth around the base. Hand-pick at dusk if needed.
  • Other Pests: Watch for aphids (spray with insecticidal soap) and spider mites (increase humidity, use neem oil). Japanese beetles may appear in July—hand-pick or use row covers.
  • Diseases: Powdery mildew thrives in humid conditions. Ensure good air circulation (don’t overcrowd), and apply a sulfur-based fungicide if needed. Avoid overhead watering.

5. Overwintering in Webster

  • Frost Timing: Dahlias are tender and won’t survive Webster’s winter (lows to -10°F). First frost hits ~October 5–15.
  • Digging Tubers: After frost blackens foliage, cut stems to 4 inches, dig up tubers, and brush off soil (don’t wash). Dry them for 1–2 days in a garage or shed.
  • Storage: Store tubers in a box with peat moss, vermiculite, or sawdust at 40–50°F (e.g., a cool basement). Check monthly for rot; mist lightly if they shrivel. Replant next May.

6. Local Tips

  • Weather: May is rainy (3–4 inches average). Ensure good drainage to prevent tuber rot. July–August heat (80–85°F) will boost growth if you keep soil moist.
  • Community: Cornell Cooperative Extension of Monroe County (585-461-1000) can provide soil testing to optimize your dahlia bed.

Quick Timeline

  • May 14: Plant tubers, stake, water well.
  • June: Pinch tops, fertilize, monitor slugs.
  • July–September: Deadhead, water, enjoy blooms.
  • October: Dig and store tubers after frost.