How to Grow Snake Bean 'Mosaic Proof Red'

Snake Bean 'Mosaic Proof Red'

Vigna unguiculata subsp. sesquipedalis

vegetable

Snake bean, also known as yard-long bean or asparagus bean, is a heat-loving legume that produces slender, curved pods reaching 12-16 inches in length. The 'Mosaic Proof Red' variety features distinctive reddish pods and demonstrates resistance to bean mosaic virus, making it an excellent choice for warmer climates and less-than-ideal growing conditions.

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Example Snake Bean 'Mosaic Proof Red' timeline · Pittsburgh, PA (Zone 6b)

Plant Snake Bean 'Mosaic Proof Red'
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Snake Bean 'Mosaic Proof Red'
Around Jun 16

≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Snake Bean 'Mosaic Proof Red' dates for your own zip code.

Growing Conditions

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Sun: Full sun, 8+ hours daily; thrives in heat

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Water: Keep consistently moist but not waterlogged during growing season; reduce watering slightly once established. Water at soil level to minimize disease. Requires 1-1.5 inches per week.

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Spacing: 4-6 inches apart; rows 18-24 inches apart inches

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Days to maturity: 60-75 days from planting to first harvest

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Planting depth: 1-1.5 inches deep

Soil

Type: Well-draining loamy soil rich in organic matter

pH: 6.0-7.0

Amendments:

Compost aged manure perlite for drainage balanced organic fertilizer

Growing Zones

Find your zone →

Thrives in zones 9-11; grows as an annual in zones 8 and below

9a 9b 10a 10b 11a 11b

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Growth Stages

Germination & Seedling

1-2 weeks

Seeds sprout within 7-10 days in warm soil (70-80°F+). Seedlings emerge with cotyledons and develop first true leaves.

Ensure soil temperature is at least 70°F before planting; warm soil is critical for germination. Keep soil consistently moist. Thin seedlings or transplant to spacing distance.

Vegetative Growth

3-4 weeks

Plant develops climbing vines with compound leaves. Strong vine growth occurs as plant establishes root system and reaches 12-18 inches in height.

Install sturdy trellis or support early (within 2-3 weeks). Feed with balanced fertilizer; avoid excess nitrogen which promotes foliage over flowers. Monitor for pests and diseases.

Flowering

2-3 weeks

Small, delicate purple, pink, or white flowers appear along the vines. Flowers typically emerge 4-6 weeks after planting.

Maintain consistent watering and moderate fertilizer (phosphorus and potassium-rich formula supports flowering). Pollination occurs via bees; ensure good air circulation.

Pod Development & Early Fruiting

3-4 weeks

Flowers are pollinated and develop into long, slender pods. Red pods begin forming and elongating; plant continues flowering throughout season.

Begin harvesting pods when they reach 6-8 inches to encourage continuous production. Water regularly as pods develop. Apply mulch to conserve moisture and regulate soil temperature.

Mature Harvest

4-8 weeks or until frost

Pods reach full length (12-16 inches) and develop deep red color. Plant continues to flower and produce new pods if harvested regularly.

Harvest every 2-3 days to maintain productivity and tender texture. Handle vines gently to avoid breaking them. Continue regular watering and fertilizing.

Companion Planting

Plan your garden →

Plant with:

Corn (as trellis support) Squash Pumpkin Cucumber Marigold Basil Mint Garlic Onion

Avoid planting near:

Fennel Kohlrabi Sunflower Other cowpea varieties (to prevent cross-pollination)

Common Pests

Spray with water to dislodge; use neem oil or insecticidal soap if severe. Improve air circulation.
Use yellow sticky traps; apply neem oil or insecticidal soap. Introduce parasitic wasps (Encarsia formosa).
Hand-pick eggs and beetles; use spinosad or neem oil spray. Remove affected foliage.
Spray with water; use insecticidal soap or neem oil. Introduce ladybugs or parasitic wasps.
Use reflective mulch; spray with neem oil or spinosad. Remove damaged flowers and foliage.

Uses

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Fresh Cooking & Stir-fry

Culinary

Snake bean pods are tender when young and are commonly stir-fried, steamed, or boiled in Asian cuisines. They have a mild, slightly sweet flavor with a firm, crisp texture when properly cooked. [source]

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Nutritional Profile

Culinary

Rich in dietary fiber, protein, vitamins A and C, and minerals like iron, potassium, and manganese. The pods provide good carbohydrates and are low in calories. [source]

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Traditional Health Benefits

Medicinal

In traditional Asian medicine, snake beans are used to support digestion and are believed to have cooling properties. The high fiber content aids digestive health. [source]

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Long Storage as Dried Legume

Household

Mature pods can be allowed to dry completely for storage as dried beans, extending the harvest season and providing a preserved protein source for later use. [source]

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Pollinator Support

Wildlife

The abundant flowers attract bees, butterflies, and other pollinators throughout the growing season, supporting garden biodiversity. [source]

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

Harvest Tips

Begin harvesting when pods reach 6-8 inches in length for maximum tenderness; can continue harvesting up to 12-16 inches. Harvest every 2-3 days to encourage continuous flowering and production. Pods should snap cleanly when bent. Wear gloves as vine hairs can cause skin irritation. Pick in early morning when pods are cool and crisp. Regular harvesting extends the productive season.

Fun Facts

🌱 Snake beans can grow up to 16 inches long—longer than a typical ruler—and are sometimes called 'yard-long beans' because of their impressive length.
🌱 The 'Mosaic Proof Red' variety is specifically bred for resistance to bean mosaic virus, making it one of the most disease-tolerant snake bean cultivars available.
🌱 Snake beans originated in Africa but are now a staple in Southeast Asian cuisines, particularly in Thai, Vietnamese, and Chinese cooking, where they're prized for their tender texture and mild flavor.

Gardening Terms

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

Full Sun Germination Mulch pH Pollination Transplant Trellis True Leaves

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