Cornell's Bush Delicata

Winter Squash

Zone 5a Save Garden

Botanical illustration of Cornell's Bush Delicata

🌱 95d to harvest Bush

Sweet, nutty flesh with a delicate, creamy finish—Cornell's Bush Delicata delivers a warm, roasted aroma that fills the garden ai…

Crop Dates

Milestone	Date
Start Indoors	May 22nd
Last Frost	May 8th
Transplant / Sow Outdoors	Jun 5th
Harvest Begins	Sep 8th
Harvest Ends	Sep 30th

Crop Details

Trait	Value
Days to Maturity	95
Sun Requirements	Full Sun
Growth Habit	Bush
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

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Frequently Asked Questions

What pest or disease most often affects Cucurbita pepo (bush delicata squash), and how can I control it?

A common problem on Cucurbita pepo is powdery mildew on the leaves, which can start mid-season and quickly reduce yield. Improve airflow by keeping the plant compact and removing heavily affected leaves early, then spray an approved sulfur or potassium bicarbonate product at the first sign and repeat as label directs. If you see wilted vines with little leaf damage, check for squash vine borers and protect stems with row cover until flowering, then inspect stems weekly near the base for bore holes/frass and remove infested sections when feasible.

How often should I water Cucurbita pepo during the main growing phase, and what soil moisture level should I aim for?

During active vine and fruit growth (roughly weeks 4–10), water deeply about 1–2 times per week to keep the top 2–3 inches of soil evenly moist, not soggy. Aim for consistent moisture while fruit are sizing, then slow to lighter watering in the final 2–3 weeks to help the rind cure and reduce rot. Use a soak-and-drain approach at the base (not overhead) so the soil stays moist between irrigations but doesn’t remain wet.

How do I know Cornell’s Bush Delicata (Cucurbita pepo) is ready to harvest?

Harvest when the rind is fully colored and hard—your thumbnail should not easily dent it—and the fruit should be mature around 95 days from sowing. The stem should be firm and the squash should have reached its final size for this cultivar. Cut the fruit from the vine with a short stem (don’t pull), and cure in a warm, dry place for about 7–10 days to improve storage quality.

Sweet, nutty flesh with a delicate, creamy finish—Cornell's Bush Delicata delivers a warm, roasted aroma that fills the garden air as the fruits mature. The compact bush habit produces uniform, delicata-type winter squash with tender, spoonable texture and a gently sweet flavor profile that shines in hearty autumn favorites. Grow it for reliable yields and a standout, striped beauty that stores well for later enjoyment.

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 best sweetness and disease resistance, grow in warm soil, keep vines bushy (don’t over-crowd), and harvest when the rind is fully hard.