nut variety
Colossal
Chestnut · Castanea species and hybrids
USDA hardiness range
- Zones
- 5b–8a
- Chill hours
- 400 to 700 below 45°F
- Days to harvest
- 120 to 180
- Sun
- Full
- Water
- Moderate
- Lifespan
- 50 to 150 years
At a glance
Sweet, mild, very large nuts with easy peeling; roasting, fresh, processing. European x Japanese hybrid, the West Coast commercial standard. Requires a pollinizer.
Growing Colossal
Detailed guidance for this section is being prepared. Check back soon.
Flavor, texture, and use
Detailed guidance for this section is being prepared. Check back soon.
Growing notes
Detailed guidance for this section is being prepared. Check back soon.
Colossal by zone
Zone-specific suitability, frost timing, and adjacent-zone notes.
Other chestnut varieties
3 sibling cultivars profiled on ZonePlant.
- Chinese Chestnut
Sweet, starchy, classic chestnut flavor; roasting, baking. Pure Castanea mollissima seedling, naturally blight…
- Dunstan
Sweet, starchy, classic roasted-chestnut flavor; roasting, soup, stuffing, flour. American x Chinese hybrid wi…
- Sleeping Giant
Sweet, classic flavor, medium nuts; roasting and culinary. American x Japanese hybrid with good blight resista…
Frequently asked questions
- What zones does the Colossal chestnut grow in?
Colossal grows in USDA zones 5b through 8a.
- How does Colossal compare to other chestnut varieties?
Colossal is one of 4 chestnut varieties profiled on ZonePlant. See the full chestnut variety table for side-by-side comparison.
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Image: "Gebarsten bolster van een paardenkastanje (Aesculus) 20-09-2020 (d.j.b.) 01", by Dominicus Johannes Bergsma, via Wikimedia Commons, licensed under CC-BY Source.
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