Planting guide · zone 9a
When to plant tomatoes in zone 9a
In zone 9a, the average last spring frost is Feb 28 and the first fall frost is Dec 1. Here is tomatoes's whole year, counted from those dates.
Jan 17Start seeds indoorsSpring
Mar 7Transplant into the gardenSpring
J
F
M
A
M
J
J
A
S
O
N
D
Soil & site
Rich, deep soil with available calcium — blossom end rot is a calcium-plus-uneven-water problem. Mulch well.
Seedling care
Start 6 weeks before last frost, pot up once, and plant deep — every inch of buried stem grows roots.
Growing notes
Stake or cage at planting, not after. Consistent water prevents cracking; prune suckers on indeterminates if you want fewer, larger fruit.
Harvest
Pick at first blush and ripen on the counter during heat waves or ahead of storms — flavor doesn't suffer, and the birds lose.
Same crop, other zones
Tomatoes in zone 7b →Tomatoes in zone 8a →Tomatoes in zone 8b →Tomatoes in zone 9b →