nut variety in zone 6a
Colossal chestnut in zone 6a
Colossal · Castanea species and hybrids
- Zone
- 6a -10°F to -5°F
- Growing season
- 180 days
- Chill needed
- 400 to 700 below 45°F
- Days to harvest
- 120 to 180
The verdict
Detailed guidance for this section is being prepared. Check back soon.
About Colossal
Sweet, mild, very large nuts with easy peeling; roasting, fresh, processing. European x Japanese hybrid, the West Coast commercial standard. Requires a pollinizer.
Critical timing for zone 6a
Detailed guidance for this section is being prepared. Check back soon.
Common challenges in zone 6a
- ▸ Brown rot in stone fruit
- ▸ Japanese beetles
- ▸ Spring frost damage to peach buds
Modified care for zone 6a
Detailed guidance for this section is being prepared. Check back soon.
Colossal in adjacent zones
Other chestnut varieties for zone 6a
- 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
- Will Colossal chestnut grow in zone 6a?
Yes. Colossal is recommended for USDA zones 5b through 8a, which includes zone 6a.
- Are there enough chill hours in zone 6a?
Chestnut needs 400 to 700 chill hours. Zone 6a typically meets this range; check local microclimate against historical chill totals to confirm.
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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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