How to Grow Howden Pumpkin
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Howden Pumpkin
Cucurbita pepo 'Howden'
vegetableHowden is a classic, large orange pumpkin variety bred specifically for jack-o'-lantern carving, featuring a deep orange color, ribbed sides, and a sturdy flat base. It typically grows 8-10 inches in diameter and weighs 10-25 pounds, making it ideal for decorative use. The plant is a vigorous vining annual that produces consistently well across most growing regions.
When should you plant Howden Pumpkin in your zone?
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Example Howden Pumpkin timeline · Pittsburgh, PA (Zone 6b)
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Plant Howden Pumpkin
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 Howden Pumpkin
Around Jul 26≈ 100 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Howden Pumpkin dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; can be grown in zones 2-10 with adjusted timing
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Get my Howden Pumpkin timeline →Growth Stages
Seedling
2-3 weeksTwo cotyledons emerge, followed by the first true leaves. Vines are compact and tender.
Thin to 2-3 strongest plants per hill once true leaves appear. Maintain consistent moisture and protect from cold/frost. Mulch lightly to retain soil moisture.
Vegetative/Runner Growth
4-6 weeksLong vines rapidly extend with large lobed leaves covering the soil. The plant establishes a robust root system and accumulates foliage mass.
Water deeply and consistently. Apply 2-3 inches of mulch to suppress weeds and regulate soil temperature. Side-dress with balanced fertilizer at 3-4 weeks. Monitor for pests and diseases.
Flowering
2-4 weeksBright yellow male and female flowers appear on the vines. Female flowers are recognizable by a small green ovary at the base.
Ensure consistent watering during this critical stage; water stress reduces fruit set. Avoid excessive nitrogen (favors foliage over fruit). Hand-pollinate if bee activity is low using male flowers.
Fruit Development
6-8 weeksPollinated female flowers develop into small green pumpkins that rapidly enlarge and begin developing characteristic orange color and ribbed pattern.
Maintain steady watering; fruit cracking can occur with irregular moisture. Thin to 1-2 fruits per vine to maximize size and quality. Carefully position developing fruits on a bed of straw to prevent rot. Reduce nitrogen, increase potassium if available.
Maturation/Hardening
3-4 weeks before harvestPumpkins reach full size, develop deep orange color, and the skin hardens. Stems begin to cure and turn brown/woody. Leaves may yellow and decline.
Reduce watering significantly as vines senesce. Avoid handling developing pumpkins. Ensure good air circulation to reduce disease. Cut back excessive foliage only if necessary to improve light penetration around fruit. Ready for harvest when skin resists fingernail puncture.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Wrap base of vines with aluminum foil or row covers. Monitor for sawdust-like frass near the base. Inject Bt (Bacillus thuringiensis) into affected stems or inject spinosad. Remove affected vines.
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Hand-pick bugs and egg clusters early morning. Use row covers on seedlings. Apply neem oil or insecticidal soap. Encourage beneficial insects. Rotate crops annually.
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Spray with water to dislodge. Use miticide or insecticidal soap if infestation is severe. Maintain adequate moisture (stressed plants are more susceptible).
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Improve air circulation by pruning excess foliage. Apply sulfur dust or potassium bicarbonate fungicide weekly. Use neem oil. Remove severely affected leaves. Avoid overhead watering.
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Use preventative copper or chlorothalonil fungicide. Improve drainage and air circulation. Remove infected leaves. Avoid overhead watering.
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Use floating row covers on seedlings. Hand-pick or use yellow sticky traps. Apply spinosad or neem oil. Rotate crops.
Uses
Pumpkin Puree & Baking
CulinaryWhile Howden is primarily a carving pumpkin, the flesh can be used for soups, pies, and purees, though sugar pumpkins and pie pumpkins are preferred for superior flavor and texture. The seeds are excellent for roasting. [source]
Jack-o'-Lantern Carving
HouseholdHowden's size, shape, flat base, and thick walls make it the gold standard for jack-o'-lantern carving. Its deep color and prominent ribs create classic pumpkin aesthetics. [source]
Fall & Halloween Decoration
HouseholdHowden pumpkins are widely grown and used as decorative autumn and Halloween displays, with excellent storage life when properly cured. [source]
Wildlife Food Source
WildlifePumpkin vines provide foliage for herbivores, and mature pumpkins left in the field or garden can provide food for deer and other wildlife during fall and winter. [source]
Seed Saving
CraftHowden pumpkins produce abundant seeds that can be saved and dried for next season's planting. Isolate from other Cucurbita species to maintain purity. [source]
Harvest Tips
Howden pumpkins are ready to harvest in early fall, typically late September to October in most zones. Harvest when skin is deep orange and hard (fingernail cannot pierce it easily). Cut the stem 3-4 inches above the fruit using a sharp knife or pruners; do not pull. Harvest before the first frost. Cure for 7-14 days at 75-80°F with good air circulation to harden the skin and seal any minor cuts, improving storage life (up to 3 months in cool, well-ventilated conditions). Handle carefully to avoid bruising.
Fun Facts
- 🌱 Howden was developed at Cornell University in the 1970s and quickly became the most popular jack-o'-lantern variety in North America, dominating the ornamental pumpkin market.
- 🌱 A mature Howden pumpkin can produce 200-500 seeds, making it an economical choice for seed savers and gardeners interested in self-sufficiency.
- 🌱 The distinctive ribbed sides of Howden pumpkins make them more stable during carving and provide convenient guides for designing jack-o'-lantern faces.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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