How to Grow Dragon's Tongue
Wikimedia Commons
Dragon's Tongue
Phaseolus vulgaris 'Dragon's Tongue'
vegetableDragon's Tongue is a striking heirloom bush bean variety known for its vibrant yellow pods with purple streaking that resembles a dragon's markings. The pods are tender, flavorful, and turn solid green when cooked, making them both ornamental and delicious. This compact, bushy plant is perfect for home gardens and containers.
When should you plant Dragon's Tongue in your zone?
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Example Dragon's Tongue timeline · Pittsburgh, PA (Zone 6b)
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Plant Dragon's Tongue
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 Dragon's Tongue
Around Jun 11≈ 55 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Dragon's Tongue dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-9, prefers warm soil and air temperatures
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Seedling
1-2 weeksCotyledons emerge, followed by first true leaves. Plant is small and delicate.
Keep soil warm (65-75°F), maintain consistent moisture, ensure good air circulation. Thin seedlings if directly seeded.
Flowering
1-2 weeksSmall white or pale yellow flowers appear in clusters along the stems.
Maintain consistent watering during flowering. Do not let soil dry out, as this can cause flower drop. Keep mulched to retain moisture.
Pod Development
2-3 weeksFlowers fade and young green pods with purple streaking begin to elongate. Pods develop their characteristic Dragon's Tongue appearance.
Begin harvesting once pods reach 4-5 inches to encourage continued production. Maintain even soil moisture.
Harvest Ready
3-4 weeks ongoingPods are full-sized (5-6 inches), bright yellow with deep purple streaks, and tender to the touch.
Pick regularly to extend the harvest season. Wear gloves to avoid plant irritation. Continue watering consistently.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick beetles and egg clusters; use row covers to prevent infestation; apply neem oil or spinosad as needed; encourage natural predators like ground beetles.
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Spray foliage with strong water stream to dislodge; use insecticidal soap; maintain adequate humidity; introduce predatory mites.
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Spray with water; use insecticidal soap or neem oil; encourage beneficial insects like ladybugs and lacewings.
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Use row covers on young plants; hand-pick beetles; apply pyrethrin-based insecticides if severe.
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Improve air circulation; avoid overhead watering; apply sulfur dust or potassium bicarbonate; remove infected leaves.
Uses
Fresh Snap Beans
CulinaryDragon's Tongue pods are tender and flavorful when eaten fresh as snap beans. They can be steamed, sautéed, or blanched and offer a mild, slightly sweet flavor that becomes fully green upon cooking. [source]
Dried Beans
CulinaryIf left to mature on the plant, the pods dry and reveal dried beans inside that can be harvested and stored for winter use. These dried beans can be used in soups, stews, and bean dishes. [source]
Ornamental Garden Display
HouseholdThe striking yellow pods with purple streaking make Dragon's Tongue beans an attractive addition to ornamental vegetable gardens and containers. The vibrant coloring adds visual interest to landscapes. [source]
Nitrogen Fixation Benefit
CulinaryLike all beans, Dragon's Tongue fixes nitrogen in the soil through symbiotic relationships with bacteria, improving soil fertility naturally for subsequent plantings and supporting sustainable gardening practices. [source]
Wildlife Food Source
WildlifeThe flowers attract pollinators like bees and butterflies, while mature seed pods can feed birds and beneficial insects, supporting biodiversity in the garden ecosystem. [source]
Harvest Tips
Harvest pods when they are 4-6 inches long, firm, and still tender, before they begin to yellow significantly. Pick in the early morning for best flavor and crispness. Regular harvesting encourages continued production throughout the season. The pods will turn solid green when cooked, losing their purple streaking. Can be harvested as a fresh snap bean or allowed to mature for dried beans.
Fun Facts
- 🌱 Dragon's Tongue is an heirloom variety with origins in Central America, cherished by seed savers for its unique appearance and reliable flavor.
- 🌱 The purple streaking on the pods fades to solid green when cooked, creating a surprising color transformation that delights gardeners and cooks alike.
- 🌱 This bush bean variety is relatively compact and productive, making it ideal for small spaces, container gardening, and urban gardens.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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