Buttercup

Squash

Zone 2a Save Garden

🌱 95d to harvest Vine

Buttery-sweet Buttercup Squash delivers a vivid, sunlit exterior and a dense, velvety interior that feels almost custardy when fu…

Crop Dates

Milestone	Date
Start Indoors	May 18th
Last Frost	May 25th
Transplant / Sow Outdoors	Jun 1st
Harvest Begins	Sep 4th
Harvest Ends	Aug 29th

Crop Details

Trait	Value
Days to Maturity	95
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	10

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Frequently Asked Questions

My buttercup leaves are mottled and curling—what pest or disease is most likely, and what should I do?

Mottled, curling leaves on buttercup are often a sign of aphids feeding and spreading viruses. Spray the plants with a strong jet of water to knock aphids off, then apply insecticidal soap (especially under leaves) every 5–7 days for 2–3 rounds. Remove and discard any badly distorted plants to limit virus spread in the bed.

How often should I water buttercup during the main growing phase?

During active growth (about weeks 3–8 after germination), keep the top 1 inch of soil consistently moist but not waterlogged. Water deeply about 1–2 times per week, and increase frequency only if the top inch dries out quickly—avoid daily light watering. After the plants establish, reduce watering slightly to prevent crown rot in wet soils.

How can I tell when buttercup is ready to harvest (95 days)?

Harvest when flower buds are fully colored and just starting to open, and the stems are firm rather than soft. If you’re growing buttercup for seed, wait until the seed heads turn tan-brown and the seeds rattle inside when gently shaken. In both cases, harvest in the morning after dew dries to reduce rots on cut stems.

Buttery-sweet Buttercup Squash delivers a vivid, sunlit exterior and a dense, velvety interior that feels almost custardy when fully ripened. The flesh is rich and aromatic with a smooth, fine-grained texture that holds its character beautifully for roasting and mashing, and it also shines in soups, sauces, and hearty baked preparations. Grow Buttercup for a dependable 95-day harvest and a showpiece squash that tastes as good as it looks.

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

Buttercup is a cucurbit—plant after warm weather with plenty of mulch to keep soil heat up, and avoid root disturbance if you do transplant.