How to Grow Extra-long Green Bean
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Extra-long Green Bean
Phaseolus vulgaris
vegetableExtra-long green beans are a pole or bush bean variety producing slender, elongated pods (8-10 inches) with tender, flavorful green beans inside. These beans are prized for their delicate flavor and attractive appearance in the kitchen. They're more tender and require less cooking time than standard green bean varieties.
When should you plant Extra-long Green Bean in your zone?
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Example Extra-long Green Bean timeline · Pittsburgh, PA (Zone 6b)
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Plant Extra-long Green Bean
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 Extra-long Green Bean
Around Jun 6≈ 50 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Extra-long Green Bean dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-10; warm-season annual grown in all zones
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Seedling
7-14 daysCotyledons emerge within 7-10 days; first true leaves appear shortly after. Seedlings are delicate with thin stems.
Keep soil consistently moist but not waterlogged. Provide bright light. Thin seedlings if overcrowded. Protect from cold snaps (beans need soil temps above 60°F).
Vegetative Growth
20-30 daysPlant develops true leaves, stems elongate, and vine/bush structure forms. Foliage is lush and deep green.
Water regularly and deeply. Provide support structures for pole varieties. Apply balanced fertilizer mid-growth if soil is poor. Monitor for pests.
Flowering
10-14 daysSmall white, pink, or purple flowers appear in clusters along the stem. Flowers are delicate and short-lived.
Maintain consistent watering; do not let soil dry out. Avoid excessive nitrogen which promotes foliage over flowers. Light feeding with balanced or slightly higher phosphorus fertilizer supports flowering.
Pod Development & Harvest
15-25 days (ongoing harvest period)Flowers transition to elongated green pods. Pods grow rapidly and reach full length (8-10 inches) within 2-3 weeks. Beans inside develop but remain tender and immature.
Continue consistent watering. Harvest frequently (every 2-3 days) to encourage continued production. Pick pods before beans bulge visibly inside to maintain tenderness.
Senescence (End of Season)
Variable, frost-dependentPlant slows production as temperatures cool or soil nutrients deplete. Remaining pods may toughen. Foliage may show yellowing.
Continue harvesting mature pods for eating or leaving to dry for seed. Remove plant after final frost or when production stops. Compost healthy plant material.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick adults and yellow egg clusters. Use neem oil or spinosad spray. Plant trap crops like nasturtiums nearby. Encourage beneficial insects like ladybugs.
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Spray with strong water stream to dislodge. Apply insecticidal soap or neem oil. Increase humidity. Remove heavily infested leaves.
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Spray with insecticidal soap or neem oil. Use horticultural oils. Encourage natural predators like parasitic wasps and ladybugs.
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Improve air circulation. Avoid overhead watering. Apply sulfur dust or baking soda spray (1 tbsp per gallon water). Remove infected foliage.
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Remove infected leaves promptly. Avoid wetting foliage. Apply copper fungicide. Choose rust-resistant varieties if available.
Uses
Fresh Cooking & Steaming
CulinaryExtra-long green beans are prized for their tender texture and delicate flavor. They require minimal cooking time and are excellent steamed, sautéed with garlic, or blanched. Their length and appearance make them attractive for elegant plating. [source]
Freezing & Preservation
CulinaryBeans freeze exceptionally well and retain their tender quality when blanched for 3 minutes before freezing. They maintain quality for 8-12 months frozen and are convenient for year-round use in soups, stir-fries, and side dishes. [source]
Nutritional Benefits
MedicinalExtra-long green beans are rich in vitamins A, C, and K, fiber, and minerals like manganese and potassium. They contain antioxidants and phytonutrients that support heart health and overall wellness. [source]
Nitrogen Fixation & Soil Health
WildlifeLike all legumes, beans form symbiotic relationships with nitrogen-fixing bacteria in their root nodules. This enriches the soil naturally, reducing the need for synthetic nitrogen fertilizers and benefiting subsequent crops. [source]
Seed Saving & Succession Planting
HouseholdMature bean pods can be left on the plant to dry completely, then harvested for seeds to plant the following season. Gardeners can practice succession planting every 2-3 weeks for continuous harvests throughout the growing season. [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 pods when they are 8-10 inches long, tender, and still bright green—before the beans inside bulge significantly. Snap or cut pods with scissors to avoid damaging the plant. Harvest every 2-3 days to encourage continuous flowering and pod production. Morning harvest after dew dries yields the crispest beans. Harvest the last mature pods before the first hard frost. Pods are best eaten fresh within 3-5 days of harvest, though they can be refrigerated for up to 2 weeks.
Fun Facts
- 🌱 Extra-long green beans are sometimes called 'French Beans' or 'Haricots Verts,' though technically Haricots Verts are a specific French cultivar. The 'extra-long' designation typically refers to varieties like 'Emerite' and 'Maxibel' that produce pods 8-10 inches or longer.
- 🌱 Beans were first domesticated in Mesoamerica around 5000 BCE and were later introduced to Europe by Spanish conquistadors in the 16th century, becoming a staple worldwide.
- 🌱 Beans produce a natural compound called raffinose, which can cause digestive discomfort in some people. Boiling beans and discarding the cooking water reduces raffinose content significantly, making them easier to digest.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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