SproutSmart
SproutSmart™ Intelligent Garden Sowing

Atlantic Giant

Pumpkin
Zone 7a Save Garden

Planting Schedule

Add Atlantic Giant to your garden to build a schedule and get reminders.
Botanical illustration of Atlantic Giant
120d to harvest

Sink your hands into the thick, velvety flesh of Atlantic Giant—an imposing pumpkin bred for truly monumental size and a rich, full-bodied sweetness. The rind turns a deep, burnished orange with a sturdy, sculpted surface, while the interior offers a dense, spoonable texture that shines in hearty preparations and bold preserves. Grow one for the sheer spectacle of a garden centerpiece that rewards the season with abundant, flavorful fruit.

Crop Dates

MilestoneDate
Start IndoorsApr 20th
Last FrostApr 20th
Transplant / Sow OutdoorsMay 4th
Harvest BeginsSep 1st
Harvest EndsOct 20th

Crop Details

TraitValue
Days to Maturity120
Sun RequirementsFull SunFull sun
Growth HabitVine
Support NeededTrellis
Planting DepthNormal
Germination Temp (°F)75
Min Soil Temp (°F)65
Min Night Temp (°F)55
Harden Off (days)10

Today's Conditions

Outdoor planting for Atlantic Giant in Zone 7a typically begins around 2026-05-04. Wait until soil reaches at least 65°F before transplanting Atlantic Giant.

Garden Alerts

In Zone 7a, the average last spring frost is around April 20. Watch soil temperature before transplanting Atlantic Giant.

Recommended Companions

Ladybird Nasturtium Nasturtium
View Details →
Earth Tones Dent Corn
View Details →
Inca II Marigold
View Details →
Cinnamon Girl Corn
View Details →
Whirlybird Series Nasturtium
View Details →
Moonsong Deep Orange Marigold
View Details →

Frequently Asked Questions

Why are my Atlantic Giant leaves getting powdery white spots and how do I stop it?
Powdery mildew commonly shows up as a white, dusty coating on Atlantic Giant leaves, especially after humid weather or when vines stay damp. Cut off the most heavily infected leaves, improve airflow by giving vines room, and water the soil (not the leaves). If it keeps spreading, spray an approved sulfur or potassium bicarbonate product according to the label every 5–7 days until new growth is clean.
How often should I water Atlantic Giant vines during the main growth period?
During the main vine and fruit-filling stage, water deeply so the soil is evenly moist 6–8 in. down, typically about 1–2 times per week depending on heat and mulch. Aim for roughly 1–2 in. of water per week; in hot spells you may need more frequent deep watering to prevent wilting and flower/young fruit drop. Keep the soil from drying out completely—consistent moisture helps the pumpkins size up toward their 120-day potential.
Botanical illustration of Atlantic Giant

Sink your hands into the thick, velvety flesh of Atlantic Giant—an imposing pumpkin bred for truly monumental size and a rich, full-bodied sweetness. The rind turns a deep, burnished orange with a sturdy, sculpted surface, while the interior offers a dense, spoonable texture that shines in hearty preparations and bold preserves. Grow one for the sheer spectacle of a garden centerpiece that rewards the season with abundant, flavorful fruit.

Today's Conditions

Outdoor planting for Atlantic Giant in Zone 7a typically begins around 2026-05-04. Wait until soil reaches at least 65°F before transplanting Atlantic Giant.

Garden Alerts

In Zone 7a, the average last spring frost is around April 20. Watch soil temperature before transplanting Atlantic Giant.

Sowing Tips

Transplant Conditions

Wait until soil reaches 65°F and nights stay above 55°F before moving outdoors. Harden off for 10 days first.

Direct Sow Preferred

Sensitive roots — does not transplant well. If starting indoors, use biodegradable pots and disturb roots as little as possible when moving outdoors.

Expert Note

For Atlantic Giant, start with ample compost and space—use a single main vine per hill and remove excess female flowers to push for maximum size.