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How to Grow Corn, Bi-Color Blend

Wikimedia Commons

Corn, Bi-Color Blend

Zea mays

vegetable

Bi-color corn is a sweet corn variety that produces ears with alternating rows of yellow and white kernels, offering a visually striking appearance and sweet flavor. These blended varieties combine the tenderness and sweetness of modern sweet corn genetics. They are typically mid-season maturing plants that reach 6-8 feet tall.

Looking for a specific variety?

Peaches and Cream Honey and Cream Sweetness Double Standard Luscious Trinity

When should you plant Corn, Bi-Color Blend in your zone?

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Example Corn, Bi-Color Blend timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Corn, Bi-Color Blend

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Corn, Bi-Color Blend

    Around Jun 26

    ≈ 70 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Corn, Bi-Color Blend dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 8+ hours daily; minimum 6 hours for adequate growth
💧
Water: Consistent moisture; 1-1.5 inches per week via rainfall or irrigation. Keep soil evenly moist, especially during silking and ear development. Reduce watering after kernel dough stage.
📏
Spacing: 8 inches
📅
Days to maturity: 70-90 days depending on variety
🌱
Planting depth: 1-1.5 inches

Soil

Type: Well-draining, fertile loamy soil rich in organic matter
pH: 6.0-7.0
Amendments:
Compost or aged manure (2-3 inches worked in before planting) Balanced fertilizer (10-10-10 or similar) Nitrogen-rich side dressing at mid-growth

Growing Zones

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Zones 3-9; thrives in warm-season climates with consistent heat

2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Germination

7-10 days

Seeds swell and radicle emerges; seedling breaks through soil surface

Keep soil temperature at 60°F minimum (ideal 70-85°F). Maintain consistent moisture without waterlogging. Thin seedlings to proper spacing once they have 2-3 leaves.

2

Vegetative Growth

3-4 weeks

Plant develops 4-8 leaves; rapid height increase; root system expands deeply. Whorled leaf arrangement becomes visible.

Provide steady watering and begin nitrogen fertilization. Scout for early pest damage (armyworms, flea beetles). Hill soil around base at V4-V6 stage (4-6 leaves visible) for root support.

3

Tassel & Silk Formation

2-3 weeks

Tassel emerges from top of plant; ears develop lateral shoots; silks appear at ear tips. Plant reaches full height.

Critical water period—maintain 1.5 inches per week. Provide side-dress nitrogen if leaves show yellowing. Pollination occurs when tassel sheds pollen and silks are receptive (usually 2-3 days after silk emergence).

4

Kernel Development & Milk Stage

2-3 weeks

Kernels fill and contain milky fluid when pressed; ears reach full size; cob continues to harden

Continue adequate watering through kernel fill. Reduce nitrogen fertilization to minimize excess vegetative growth. Watch for silk browning as indicator of pollination success.

5

Dough & Harvest Readiness

1-2 weeks

Kernels transition from milk to dough stage; kernels become firmer and contain less liquid. Husk turns brown and silk blackens.

Reduce watering gradually as kernels mature. Harvest when kernels are in late milk to early dough stage for optimal sweetness. Test by pressing kernel—it should release milky juice but feel slightly resistant.

Companion Planting

Plan your garden →

Plant with:

Beans Peas Squash Cucumbers Melons Pumpkins Marigolds Nasturtiums Lettuce Radishes

Avoid planting near:

Brassicas (cabbage, broccoli, cauliflower) Fennel Dill Celery Onions Garlic Potatoes

Common Pests

  • Hand-pick infested ears; apply Bt (Bacillus thuringiensis) at silk emergence; use pheromone traps to monitor; plant resistant varieties

  • Monitor young plants weekly; apply Bt or spinosad when larvae are small; introduce parasitic wasps; remove affected leaves

  • Remove and destroy infested stalks; apply Bt at V4-V6 stage; use pheromone disruption; maintain crop rotation

  • Row covers on seedlings; neem oil spray; encourage natural predators; trap crops with alternative hosts

  • Strong water spray to dislodge; insecticidal soap; neem oil; encourage ladybugs and parasitic wasps

  • Hand-pick in early morning; use pheromone traps away from plants; neem oil spray; encourage native predators

Uses

🍳

Fresh eating and cooking

Culinary

Bi-color corn is prized for its tender kernels and high sugar content, perfect for boiling, roasting, grilling, or adding to salads and salsas. The visual appeal of yellow and white kernels makes it attractive for fresh eating straight off the cob. [source]

🍳

Corn meal and flour production

Culinary

Dried kernels can be ground into cornmeal, polenta, or flour for baking, breading, and traditional dishes. Bi-color varieties produce both yellow and white corn products. [source]

🏠

Corn husks and cobs

Household

Husks can be used for tamale wrappers, craft projects, and animal bedding. Cobs serve as garden mulch, animal litter, or biofuel. [source]

🦋

Wildlife habitat and food

Wildlife

Corn plants provide shelter for beneficial insects and pollinators. Left-standing stalks and cobs provide food and habitat for birds and small mammals through winter. [source]

💊

Corn silk tea and traditional remedies

Medicinal

Corn silks have been used in traditional herbalism to support urinary and kidney function. They are typically dried and brewed as a gentle tea or infusion. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest when kernels are in late milk to early dough stage (18-20 days after silking). Test ripeness by pressing a kernel—it should release milky juice. Husk should be green and silks brown/black. Harvest in early morning when kernels are coolest for best sweetness. Snap ear downward at a 45-degree angle while supporting stalk. Use immediately or refrigerate within 2 hours of harvest; sweetness decreases rapidly after picking.

Fun Facts

  • 🌱 Bi-color corn varieties are a relatively modern development, first commercially introduced in the 1980s; they remain a favorite at farmers markets and home gardens due to their striking appearance and exceptional sweetness.
  • 🌱 A single corn plant can produce 1-2 ears, occasionally 3; the primary ear (first to emerge lower on the stalk) typically develops more kernels and reaches larger size than secondary ears.
  • 🌱 Corn pollen must land on silk to pollinate; each kernel requires an individual pollen grain, which is why incomplete pollination results in missing kernels on the cob—a phenomenon called 'tipback.'

Gardening Terms

New to gardening? Learn about terms used in this guide:

Full Sun Pollination
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