Planting guide · zone 5b
When to plant radishes in zone 5b
In zone 5b, the average last spring frost is May 8 and the first fall frost is Oct 8. Here is radishes's whole year, counted from those dates.
Apr 3Direct sowSpring
Apr 13Succession sowing 2Spring
Apr 24Succession sowing 3Spring
May 4Succession sowing 4Spring
Aug 20Direct sowFall
Aug 30Succession sowing 2Fall
Sep 10Succession sowing 3Fall
Sep 20Succession sowing 4Fall
J
F
M
A
M
J
J
A
S
O
N
D
Soil & site
Any loose, average soil. Too much nitrogen grows lush tops and puny roots.
Seedling care
Direct sow only — radishes go seed to table faster than transplants would recover. Thin early.
Growing notes
Sow a short row every week or two instead of one big planting; they all mature at once otherwise.
Harvest
Pull promptly at size. Left too long they turn pithy and hot.