How to Grow Yard-long Bean 'Red Noodle'
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Yard-long Bean 'Red Noodle'
Vigna unguiculata subsp. sesquipedalis
vegetableYard-long beans, also called asparagus beans or snake beans, are a tropical legume producing exceptionally long, slender pods that can reach 12-16 inches or more. 'Red Noodle' is a distinctive variety with deep burgundy-red pods and a tender, mild flavor that's popular in Asian cuisine. These vigorous climbing vines are heat-loving and more productive than traditional snap beans in warm climates.
When should you plant Yard-long Bean 'Red Noodle' in your zone?
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Example Yard-long Bean 'Red Noodle' timeline · Pittsburgh, PA (Zone 6b)
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Plant Yard-long Bean 'Red Noodle'
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Yard-long Bean 'Red Noodle'
Around Jun 21≈ 65 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Yard-long Bean 'Red Noodle' dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9-11; can be grown as an annual in zones 8 and warmer with proper timing
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Get my Yard-long Bean 'Red Noodle' timeline →Growth Stages
Seedling
3-4 weeksCotyledons emerge within 7-10 days; true leaves appear oval-shaped and compound. Seedlings are tender and delicate.
Keep soil warm (75-85°F) and consistently moist. Provide bright light. Avoid transplanting until soil is warm and frost danger has passed completely.
Vegetative Growth
4-5 weeksFast-growing vines develop deep green, compound leaves. Plants rapidly climb and vine growth dominates. Tendrils become prominent.
Provide sturdy trellis, stake, or pole support early. Side-dress with nitrogen-rich fertilizer at 3-4 weeks. Keep weeds down. Maintain consistent moisture.
Flowering
2-3 weeksSmall purple or lavender flowers appear along the vine in clusters. Flowers are self-pollinating but attract bees.
Reduce nitrogen to avoid excessive vine growth at expense of flowers. Maintain steady watering. Ensure good air circulation to prevent powdery mildew.
Pod Development
3-5 weeks (overlaps with continued flowering)Flowers give way to long, slender burgundy-red pods that rapidly elongate. Pods can reach 12-16 inches; texture becomes tender and string-like.
Pick pods regularly to encourage continued production. Water deeply and consistently. Apply balanced fertilizer every 2-3 weeks. Monitor for pests daily.
Harvest & Production
3-8 weeks or until frostMature pods are deep red, tender, and crisp. Plant continues producing if pods are harvested regularly. Productivity peaks in peak summer heat.
Harvest every 2-3 days to maximize yield and pod tenderness. Remove any old, fibrous pods to redirect energy. Continue weekly feeding and consistent watering.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with neem oil or insecticidal soap; increase humidity; remove affected leaves. Predatory mites are effective biological control.
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Spray with water jet to dislodge; use neem oil or pyrethrin-based insecticide. Encourage beneficial insects like ladybugs and lacewings.
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Hand-pick and destroy beetles; use row covers on young plants; apply spinosad if infestation is severe.
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Use yellow sticky traps; spray with insecticidal soap or neem oil; encourage natural predators.
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Improve air circulation; avoid overhead watering; apply sulfur dust or potassium bicarbonate fungicide; remove affected leaves.
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Remove infected leaves promptly; avoid overhead watering; apply sulfur-based fungicide; plant resistant varieties if available.
Uses
Stir-fries and Asian cooking
CulinaryRed Noodle beans are prized in Asian cuisines, particularly Thai and Vietnamese cooking, where they are quickly stir-fried with garlic and chili or added to curries. Their tender texture and mild, slightly sweet flavor make them ideal for high-heat cooking methods. [source]
Fresh salads and light preparations
CulinaryYoung, tender pods can be lightly steamed or blanched and added to salads. The crisp texture and attractive burgundy color make them visually striking and nutritious additions to fresh dishes. [source]
Soups and broth dishes
CulinaryMature or older pods can be dried and used in soups and stews similar to dried beans, providing protein and a subtle bean flavor. They rehydrate well and maintain their shape in long-cooking preparations. [source]
Nitrogen fixation and soil improvement
HouseholdAs a legume, yard-long beans fix atmospheric nitrogen in the soil through their root nodules, naturally enriching the soil for subsequent crops. This makes them excellent for crop rotation and sustainable garden management. [source]
Pollinator support
WildlifeThe delicate purple flowers of 'Red Noodle' yard-long beans attract bees, butterflies, and other pollinators throughout the growing season, supporting local ecosystems while improving pollination for higher yields. [source]
Harvest Tips
Begin harvesting when pods reach 6-10 inches long (before they mature fully and become fibrous). For 'Red Noodle', harvest when pods are deep burgundy but still snap easily. Pick every 2-3 days to maximize yield and tenderness; older pods will become tough and stringy. Pods are best eaten fresh within 1-2 days of harvest. Can be lightly blanched and frozen for storage. Young pods may have slight sweetness; mature pods develop earthier bean flavor.
Fun Facts
- 🌱 The name 'yard-long bean' refers to their exceptional length—mature pods can reach 14-16 inches or even longer, sometimes earning the alternate name 'meter bean' in some regions.
- 🌱 'Red Noodle' has become increasingly popular in Western markets due to its striking appearance, dramatic burgundy pods, and superior tenderness compared to green yard-long bean varieties.
- 🌱 Yard-long beans are drought-tolerant and thrive in heat that would cause traditional snap beans to fail, making them ideal for southern U.S. gardens and tropical regions where they are native and widely cultivated.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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