When to Plant Asparagus in Zone 9
In USDA zone 9a, plant outdoors March 1 to March 8, and expect your first harvest around March 8. (9a shown here — see 9a and 9b dates separately below.)
Asparagus planting calendar for USDA Zone 9a
Average last spring frost
March 1
Average first fall frost
December 1
Direct sow
Mar 1
Projected first harvest
Mar 8
Most asparagus mature in about 7 days, needing roughly 275 frost-free days in zone 9a.
Asparagus planting calendar for USDA Zone 9b
Average last spring frost
February 15
Average first fall frost
December 15
Direct sow
Feb 15
Projected first harvest
Feb 22
Most asparagus mature in about 7 days, needing roughly 303 frost-free days in zone 9b.
Not sure whether you're in 9a or 9b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
3 varieties of asparagus in the HomeSown library. Tap any for its full grow guide.
Common problems with asparagus
What to watch for, with identification and treatment for each
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