Our Campari Experiment

by Webster Arboretum
Growing Tomatoes

Our Campari Experiment

As an experiment, we started Campari seedlings indoors in March, from tomatoes purchased at Wegmans.

If you’re not familiar with Campari tomatoes, they are a sweet, juicy, cocktail-sized tomato (about 1 1/2–2 inches in diameter), found in clear plastic containers at most supermarkets. Wegmans tomatoes are usually sourced from Canada and Mexico.

Campari tomatoes are the world’s first branded tomato. They were developed by Mastronardi Produce, a 4th generation, commercial greenhouse grower headquartered in Kingsville, Ontario, Canada. The tomatoes are sold under their Sunset Grown and Backyard Farms brands as well as multiple store brands.

The tomatoes are non-GMO hybrids grown in state of the art greenhouses. As such, it’s difficult to predict what growing the seeds in a backyard garden will produce.

Practicality aside, its always fun to experiment just to see what happens.

Summer Update

We have Campari tomatoes!

The yield isn’t huge and the tomatoes are slightly smaller than the ones purchased from Wegmans. The taste however is still great!

Yellowing Tomato Leaves

by Zoe
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.

Growing Tomatoes

by Webster Arboretum
Growing Tomatoes

Growing Tomatoes

Growing tomatoes in Webster, NY (Zone 6a) requires attention to climate, soil, and timing! Tomatoes thrive in warm weather, with at least 6–8 hours of sun, well-drained soil, and consistent care. Here are our suggestions to maximize your harvest.

1. Timing and Starting

  • Start Date: Mid-May is ideal for planting tomatoes in Webster. The last frost is typically early May (around May 5–10), and soil temperatures should be above 60°F (check with a soil thermometer). Nighttime temps should consistently be above 50°F, which they likely are by May 15.
  • Transplants vs. Seeds: In May, use transplants (4–6-week-old seedlings) for a faster harvest. If you haven’t started your seeds, by May its too late in the season (they’re better started indoors in March). Buy healthy, stocky plants (6–10 inches tall) from a local nursery. Look for varieties suited to Zone 6a.

2. Choosing Varieties

  • Best for Webster:
  • Early Girl (50–60 days to harvest): Quick-maturing, good for cooler climates, medium-sized fruit.
  • Jet Star (70 days): Disease-resistant, prolific, great flavor, medium-large fruit.
  • Big Beef (73 days): Large, flavorful beefsteak, performs well in Zone 6a.
  • Sungold (57 days): Sweet cherry tomatoes, high-yield, hummingbirds may visit blossoms.
  • Determinate vs. Indeterminate:
  • Determinate (e.g., Early Girl): Compact, set fruit all at once, good for small spaces.
  • Indeterminate (e.g., Sungold, Big Beef): Grow/vine all season, produce until frost, need more support but yield more over time.
  • For a small space, try 1–2 indeterminate plants (like Sungold for snacking) and 1 determinate (like Early Girl for a quick harvest).

3. Site and Soil Prep

  • Location: Pick a sunny spot with 6–8 hours of direct sun.
  • Soil:
  • Type: Tomatoes need well-drained, loamy soil with pH 6.0–6.8 (test with a kit; adjust with lime to raise pH or sulfur to lower).
  • Amendments: Mix in 2–3 inches of compost or aged manure to boost fertility. Webster’s clay-heavy soil benefits from adding perlite or sand for drainage.
  • Spacing: Plant your tomato plants 2–3 ft apart (e.g., 2 ft for Sungold, 3 ft for Big Beef) to allow air circulation and reduce disease.

4. Planting

  • Depth: Dig a deep hole or trench (8–10 inches). Strip lower leaves and plant so only the top 2–4 inches of the stem are above ground—roots will form along the buried stem, making the plant sturdier.
  • Support: Install stakes, cages, or trellises at planting time (avoid damaging roots later). Indeterminate varieties like Sungold need a 5–6 ft stake or cage. Determinate ones like Early Girl can use a 4 ft cage.
  • Companion Planting: Tomatoes pair well with marigolds (repel pests) or basil (improves flavor, deters insects). Plant these nearby but avoid overcrowding.

5. Care and Maintenance

  • Watering: Water deeply (1–2 inches per week) at the base, not overhead, to prevent fungal diseases like blight. Keep soil consistently moist but not soggy. Mulch with 2 inches of straw or shredded bark to retain moisture and keep soil temperature stable.
  • Fertilizing:
  • At planting: Add a balanced fertilizer (e.g., 10-10-10) or compost tea.
  • During growth: Side-dress with a high-phosphorus fertilizer (e.g., 5-10-10) when flowers form, then every 3–4 weeks. Avoid high-nitrogen fertilizers after flowering—they promote leaves over fruit.
  • Pruning: For indeterminate varieties, pinch off suckers (small shoots between the main stem and branches) to focus energy on fruit. Leave determinate varieties unpruned.
  • Pest/Disease:
  • Common pests in Webster: Aphids, hornworms. Hand-pick hornworms; use insecticidal soap for aphids.
  • Diseases: Early blight (brown spots on leaves) is common in humid summers. Use drip irrigation, ensure good air circulation, and apply a copper-based fungicide if needed.
  • Deer: If deer are an issue (common in Webster), use netting or plant deer-repellent marigolds nearby.

6. Harvest and Timing

  • When: Harvest starts ~60–80 days from planting (mid-July to early August for Early Girl, late August for Big Beef). Pick when fruits are fully colored and slightly soft to the touch.
  • Frost Protection: First frost in Webster is ~October 5–15. Cover plants with row covers or bring potted tomatoes indoors if frost threatens before harvest is done.
  • Yield: Expect 5–10 lbs per plant for determinate varieties, 10–15 lbs for indeterminate, depending on care and weather.

Local Tips for Growing Tomatoes in Webster

  • Weather: July–August can hit 85°F with humidity. Mulch heavily and water in the morning to prevent leaf scorch.
  • Nurseries: Most garden centers have tomato transplants in the spring. Many also sell cages and organic fertilizers.
  • Community: Cornell Cooperative Extension of Monroe County offers free tomato-growing workshops—check their website or call (585-461-1000).

Quick Timeline

  • May 13–15: Buy transplants, prep soil, plant, install supports.
  • June: Water, fertilize, prune suckers, monitor pests.
  • July–August: Harvest begins (Early Girl first). Keep watering, fertilizing.
  • September–October: Harvest until frost, protect plants if needed.

With any luck you will have an abundant tomato harvest by late summer.