General Garden Info

Soil Temperatures for Vegetable Seed Germination

 Soil Temperatures for Vegetable Seed Germination

Soil Temperatures for Vegetable Seed Germination

To use: Insert thermometer a minimum of 2 to 3 inches. Check the temperature after approximately 2 minutes.  Soil temperatures for Vegetable seed germination should be consistent for several days before seeds are sown to ensure that the seeds are being exposed to optimal temperatures for germination.

Minimum
32°F 40°F 50°F 60°F
Endive
Lettuce
Onion
ParsnipSpinach
Beet
Broccoli
CabbageCarrot
Cauliflower
Celery
Parsley
Pea
Radish
Swiss
Chard
Turnip
Seed Potato
Asparagus
Sweet Corn
Tomato
Bean, Lima
Bean, SnapCucumber
Eggplant
Muskmelon
Okra
Pepper
Pumpkin
SquashWatermelon

Optimum

70°F 75°F 80°F 85°F 95°F
Celery
Parsnip
Spinach
Asparagus
Endive
Lettuce
Pea
Bean, Lima
Carrot
Cauliflower
Onion
Parsley
Bean, Snap
Beet
BroccoliCabbage
Eggplant
Pepper
Radish
Sweet Corn
Swiss ChardTomato
Turnip
Cucumber
Muskmelon
Okra
Pumpkin
SquashWatermelon

 

Maximum

75°F 85°F 95°F 105°F
Celery
Endive
Lettuce
Spinach
Beans, Lima
Parsnip
Pea
Asparagus
Bean, Snap
BeetBroccoli
Cabbage
Eggplant
Onion
ParsleyPepper
Radish
Cucumber
Muskmelon
OkraPumpkin
Squash
Sweet Corn
TurnipWatermelon

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