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When to Plant Onions in Zone 8

In USDA zone 8a, plant outdoors January 7 to April 27, and expect your first harvest around April 27. (8a shown here — see 8a and 8b dates separately below.)

Onions planting calendar for USDA Zone 8a

Average last spring frost

April 1

Average first fall frost

November 10

🌿

Direct sow

Jan 7

🌾

Projected first harvest

Apr 27

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8a (approximate)

Most onions mature in about 90 to 110 days depending on the variety, needing roughly 223 frost-free days in zone 8a.

Onions planting calendar for USDA Zone 8b

Average last spring frost

March 20

Average first fall frost

November 20

🌿

Direct sow

Dec 26

🌾

Projected first harvest

Apr 15

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 8b (approximate)

Most onions mature in about 90 to 110 days depending on the variety, needing roughly 245 frost-free days in zone 8b.

Not sure whether you're in 8a or 8b? Set your ZIP in HomeSown for dates tuned to your exact location.

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