đ«When to Plant Beet in USDA Zone 10b (2026 Guide)
Two crops in one â roots and greens. Sow before the last frost. Here is the cool-season planting schedule for beet in zone 10b (covering areas like Key West FL, coastal So-Cal). All dates are based on 2026 frost data for your zone.
Direct sow
Dec 18
Harvest From
Feb 11
Because beet is a cool-season crop, it tolerates light frost and can go out around Dec 18, before zone 10b's average last frost on Jan 15.
- Type: Cool-season
- Method: Direct sow
- Days to harvest: 55
- Spacing: 4" apart
- Sun: Full sun to part shade
- Zone 10b frost: Jan 15 â Dec 31
- Season length: ~350 days
- Companions: onion, lettuce, kale
Growing beet in zone 10b
Zone 10b has an average last spring frost around Jan 15 and a first fall frost around Dec 31, giving roughly 350 frost-free growing days. That window comfortably fits beet's 55-day cycle, with room for a second succession planting if you time it right.
Beet resents transplanting, so direct sow it right in the garden around Dec 18. Give each plant about 4 inches of space in full sun to part shade.
Zone 10b specific growing notes
In zone 10b (Key West FL, coastal So-Cal), your 350-day growing season means beet should be one of your first spring plantings. Cool-season crops thrive in the mild part of your growing window. Monitor soil temperature â beet germinates best when soil is 40-75°F.
Your first fall frost around Dec 31 means your last possible harvest is roughly late Dec. For a continuous supply, consider succession planting every 2-3 weeks from Dec 18 through mid-season.
Pro tip for beet
Soak seeds overnight before sowingâeach 'seed' is actually a dried fruit containing 2-4 embryos. You must thin to one plant per cluster or roots will not develop. Eat the thinnings as baby greens.
Troubleshooting beet
Leaf miners create blister-like translucent trails inside beet leaves. Remove and destroy affected leaves immediately. Row cover at planting prevents the adult fly from accessing leaves to lay eggs.
Growing beet in containers
8-inch deep containers minimum. Standard round beet varieties work wellâa 5-gallon bucket grows 12-15 beets. Harvest greens continuously by cutting outer leaves; pull roots at 2-3 inch diameter for best flavor.
Can you plant beet twice a year?
Yesâsow spring crop 4 weeks before last frost, then a fall crop in late July to early August in zones 5+. Beets sweetened by light frost rival carrots. Mulch for overwintering in zones 6+.
Frequently asked questions
When should I plant beet in zone 10b?
Direct sow around Dec 18. Because beet is a cool-season crop, it tolerates light frost and can go out around Dec 18, before zone 10b's average last frost on Jan 15.
How long does beet take to grow in zone 10b?
About 55 days from sowing to first harvest. A Dec 18 planting in zone 10b is typically ready to pick from around Feb 11. Zone 10b has about 350 frost-free days â plenty of time for a second succession planting.
How far apart should I space beet?
Space beet about 4 inches apart in full sun to part shade. This gives each plant enough room for roots to spread and leaves to catch sunlight without competing.
What is the best tip for growing beet?
Soak seeds overnight before sowingâeach 'seed' is actually a dried fruit containing 2-4 embryos. You must thin to one plant per cluster or roots will not develop. Eat the thinnings as baby greens.
What are common problems with beet and how do I fix them?
Leaf miners create blister-like translucent trails inside beet leaves. Remove and destroy affected leaves immediately. Row cover at planting prevents the adult fly from accessing leaves to lay eggs.
Can I grow beet in a container?
8-inch deep containers minimum. Standard round beet varieties work wellâa 5-gallon bucket grows 12-15 beets. Harvest greens continuously by cutting outer leaves; pull roots at 2-3 inch diameter for best flavor.
Can I plant a second crop of beet for fall harvest?
Yesâsow spring crop 4 weeks before last frost, then a fall crop in late July to early August in zones 5+. Beets sweetened by light frost rival carrots. Mulch for overwintering in zones 6+.
What grows well next to beet?
Good companion plants for beet are onion, lettuce, kale. Avoid planting near warm-season crops that compete for space and nutrients. Beet also benefits from crop rotation â do not plant it in the same spot year after year.