GardenWinter Squash variety
Kabocha Squash Winter Squash
✓ In your garden
Kabocha Squash is a kabocha winter squash, ready in about 90 days. Let it mature to a hard rind and cure it in the sun, and it stores for months — roast it, mash it, or make soup. It’s a long-season, space-hungry vine; plant after frost.
“A hard-shelled winter squash that cures and stores for months.”
Growing basics — shared by every winter squash
Kabocha Squash grows like any other winter squash. The full picture — how deep to plant, spacing, feeding, pests, harvest — lives on the Winter Squash page so it's maintained in one place.
- Sun
- Full Sun
- Spacing (in row)
- 36–48 in
- Row spacing
- 72–96 in
- Planting depth
- 0.75–2 in
- Soil pH
- 6–6.5
- Water
- Moderate
What is Kabocha Squash good for?
- Roasting & soupSweet, dense flesh. Great
- Winter storageCured, it keeps for months. Great
- Eaten rawHard-shelled — it needs cooking. Skip it
From how it grows — kitchens vary.
What Kabocha Squash is known for
We hold one description of this variety and no record of who made it, so it is not printed here. An unattributed claim about a plant is a claim we would be making ourselves, and we would rather show you the gap than fill it.
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Want the full 10/50/90% odds + nearest stations? Open the frost tool →When to plant Kabocha Squash in your zone
Zone 6bGreenhouse or cover on: your start slides ~4 weeks earlier and your harvest stretches ~3 weeks later (shown striped).
Planting seeds straight in the ground only works where the season's long and warm — most gardeners start seeds indoors or buy young plants, or you'd pick your first tomato right as frost hits.
Comfortable — first ripe fruit lands around late Jul, well before your typical frost (~late Oct).
- Plant seeds outside
- early May – early May
- Growing
- early May – late Jul
- Picking
- late Jul – mid Aug
Typical dates for zone 6b — set your zone or ZIP above for yours.
Growing Kabocha Squash — the things that trip people up
- Let it ripen fully on the vine — a rind you can’t dent with a thumbnail — then cut with a bit of stem and cure in the sun a week or two before storing.
- These are long-season, space-hungry vines. Give them a long warm summer, rich soil, and room to run, and watch for squash bugs and vine borers.
Kabocha Squash winter squash at a glance
| Type | Kabocha |
|---|---|
| Grows as | Bush (determinate) |
| Days to ripe | 90 days after you plant it outside |
| Color | Green |
Extra fields from seed-catalog listings and university growing guides. Days to ripe and disease resistance shift with your climate and seed source — double-check with your local extension office before you buy.
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Common questions about Kabocha Squash
How long does Kabocha Squash take to grow?
About 90 days to a fully mature fruit — a long-season crop, so start it early enough to beat your first fall frost.
How do I store Kabocha Squash?
Cure it in the sun for a week or two after harvest, then keep it somewhere cool and dry (not the fridge). Well-cured winter squash keeps for months.