How to Grow Dill's Atlantic Giant Pumpkin
Wikimedia Commons
Dill's Atlantic Giant Pumpkin
Cucurbita maxima subsp. maxima
fruitDill's Atlantic Giant is a giant pumpkin variety famous for competitive growing, capable of reaching weights over 1,000 pounds. This cultivar produces massive, slightly flattened orange fruits with smooth skin and deep ribbing. It is the standard variety used in world pumpkin-growing competitions.
When should you plant Dill's Atlantic Giant Pumpkin in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Dill's Atlantic Giant Pumpkin timeline · Pittsburgh, PA (Zone 6b)
-
Plant Dill's Atlantic Giant Pumpkin
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Dill's Atlantic Giant Pumpkin
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Dill's Atlantic Giant Pumpkin dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8; requires warm season with long growing period
Sign up free to see if Dill's Atlantic Giant Pumpkin grows in your zone — and get a personalized planting timeline.
Get my Dill's Atlantic Giant Pumpkin timeline →Growth Stages
Seedling
2-3 weeksCotyledons emerge with first true leaves appearing within 1-2 weeks. Plant is tender and vulnerable.
Start indoors 2-3 weeks before last frost or direct seed after soil reaches 70°F. Protect from cold and wind. Keep soil consistently moist.
Vegetative Growth
3-4 weeksLong vines with large lobed leaves develop rapidly. Multiple flowers begin forming along the vine.
Apply balanced fertilizer every 2-3 weeks. Thin to strongest vine for giant fruit production. Provide stakes or allow sprawling on prepared soil.
Flowering
2-3 weeksLarge yellow flowers appear; male flowers precede female flowers. Bees visit for pollination.
Hand-pollinate female flowers (those with tiny fruit behind) in early morning if bee activity is low. Select 1-3 of the strongest female flowers for competition growing.
Fruit Development
6-10 weeksSelected pumpkins swell rapidly, developing characteristic ribbed, flattened shape. Fruit reaches massive size.
Once fruit sets, remove all other developing pumpkins to concentrate plant energy. Fertilize with high-potassium formula weekly. Water deeply and consistently. Provide shade cloth in extreme heat. Support fruit with straw or sling.
Maturity & Harvest
1-2 weeksSkin hardens and deepens to dark orange. Vine begins to decline. Stem becomes woody and thick.
Stop fertilizing 2-3 weeks before harvest. Reduce water slightly to harden skin. Harvest before first frost when skin resists fingernail pressure. Handle gently to avoid bruising.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Wrap base of plants with foil, inject BT into stems, plant companion flowers to attract parasitic wasps, monitor for sawdust-like frass
-
Use row covers until flowering, apply neem oil or spinosad, plant trap crops, remove by hand
-
Improve air circulation, spray with sulfur or potassium bicarbonate, remove infected leaves, water at soil level
-
Use yellow sticky traps, spray insecticidal soap, encourage beneficial insects, remove heavily infested leaves
-
Increase humidity, spray with water to dislodge, apply neem oil or miticide if severe
Uses
Cooking & Pies
CulinaryWhile primarily grown for competition, Dill's Atlantic Giant pumpkin flesh can be used for pies, soups, and purees, though it is more watery than dedicated pie varieties. The meat is less sweet than sugar pumpkins but still edible. [source]
Fall Decoration & Display
HouseholdThe massive size and striking appearance make it the premier choice for porch displays, garden showcases, and competitive exhibitions. Giant pumpkins become treasured focal points for autumn decoration. [source]
Competition Growing
CraftDill's Atlantic Giant is the world standard for competitive giant pumpkin growing, with records exceeding 2,000 pounds. Growers worldwide compete annually using specialized cultivation techniques. [source]
Wildlife Feed & Habitat
WildlifeLarge pumpkins provide seeds and nutrition for birds and small mammals in fall and winter. The large plant also offers shelter for beneficial insects during the growing season. [source]
Harvest Tips
Harvest when skin is hard and resists fingernail puncture, typically 90-130 days after planting. Cut fruit from vine with 4-6 inches of stem attached using a sharp knife. Cure in warm (75-85°F), dry location for 7-10 days to harden skin before storage. Store in cool (50-65°F), dry location. For competition, harvest at peak ripeness and handle with extreme care.
Fun Facts
- 🌱 Dill's Atlantic Giant holds the world record for pumpkin weight, with specimens exceeding 2,600 pounds. The variety was developed by Howard Dill in Nova Scotia, Canada in the 1970s.
- 🌱 Competitive growers often pamper individual pumpkins, pruning all other fruit, installing root trenches to direct nutrient flow, and hand-pollinating flowers to ensure optimal growth.
- 🌱 A single Dill's Atlantic Giant plant can produce a pumpkin that weighs more than an average adult, gaining 15-20 pounds per day during peak growth phases.
Gardening Terms
New to gardening? Learn about terms used in this guide:
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Dill's Atlantic Giant Pumpkin planting timeline
Tell us your zip code and we'll calculate exactly when to start Dill's Atlantic Giant Pumpkin seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Dill's Atlantic Giant Pumpkin timeline →