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Germination Temperatures for Vegetable Seeds

Posted Mar 27 2010 3:18am

Germination temperatures for vegetables seeds often differ from the ideal temperature for plant growth.  Some vegetable seeds will only germinate when warmer than the best soil growing temperature, so they have to be germinated in a propagator, on the windowsill or under a cloche .

Here is a chart of some ideal temperatures:







Germination temperature
Growing temperature





Asparagus 77
60-70
Beans – french 75-85
60-65
Beans – runner 75-85
65-75
Broccoli 80
60 – 65
Brussels Sprouts 75 – 80
60 – 65
Cabbage 75 – 85
60 – 65
Carrots 75
60 – 70 Sow Directly into soil




Does not transplant well.
Cauliflower 80
60 – 70
Celery 70
60 – 70
Leeks 75
75
Lettuce 40 – 60
40 – 60
Onions 65 – 85
65 – 85
Parsnips 65 – 75
65 – 75
Peas 40 – 75
40 – 75 Sow Directly into soil




or sow in gutter
Potatoes 45


Spinach 50 – 75
60 – 65
Swiss Chard 50 – 85
60 – 65
Turnip 50 – 95
50 – 95







Germination temperature
Growing temperature





Asparagus 77
60-70
Beans – french 75-85
60-65
Beans – runner 75-85
65-75
Broccoli 80
60 – 65
Brussels Sprouts 75 – 80
60 – 65
Cabbage 75 – 85
60 – 65
Carrots 75
60 – 70 Sow Directly into soil




Does not transplant well.
Cauliflower 80
60 – 70
Celery 70
60 – 70
Leeks 75
75
Lettuce 40 – 60
40 – 60
Onions 65 – 85
65 – 85
Parsnips 65 – 75
65 – 75
Peas 40 – 75
40 – 75 Sow Directly into soil




or sow in gutter
Potatoes 45


Spinach 50 – 75
60 – 65
Swiss Chard 50 – 85
60 – 65
Turnip 50 – 95
50 – 95
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