Kalettes in Zone 3a & 3b
Brassica oleracea
When to plant kalettes in zone 3b
Zones 3a and 3b share the same average frost dates in our data, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. Kalettes needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Apr 18–Apr 25 |
|---|---|
| Direct sow / transplant outside | May 16–May 23 |
| Estimated harvest | Aug 24–Aug 31 (~100 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Kalettes is a trademarked cross between kale and Brussels sprouts, grown for small, frilly-leaved florets that look nothing like the tight round sprouts of its Brussels parent, with a milder, sweeter flavor to match.
How kalettes fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Kalettes needs about 100 days from transplant to first harvest.
Good companions
No standout companions recorded yet for Kalettes.
Where to buy kalette seeds
See why we recommend these suppliers →
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews. See the sources cited on each item.
See it growing
Search YouTube for "growing kalettes" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 3b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
Pin this for later
Growing Kalettes in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
Save to Pinterest