Temperature, Germination & When to Seed Plants

These charts are only to give an idea of when to plant. It’s important to consider your climate. Theses references are good for mid US.

Temperature & Germination

Crop	Minimum Percent Germination				Days to Germinate Under Optimum Temperature and Moisture Conditions
		Min °F	Opt. °F	Max. °F
Asparagus	60	50	75	95	10
Bean, Lima	70	60	85	85	6
Bean, Snap	75	60	80	95	7
Beets	65	40	85	95	4
Broccoli	75		85		4
Brussels Sprouts	70		80		4
Cabbage	75	40	80	100	4
Corn	50	50	80	95	4
Carrot	55	40	80	95	6
Cauliflower	75	40	80	100	5
Celeriac	55		70		11
Celery	55	40	70	85	7
Chicory	65		80		6
Chinese Cabbage	75		80		4
Cucumber	80	60	95	105	3
Eggplant	60	60	85	95	6
Endive	70		80		6
Kale	75		80		4
Kohlrabi	75		80		4
Leek	60		70		7
Lettuce	80	35	75	85	3
Muskmelon	75	60	90	100	4
New Zealand Spinach	40		70		6
Okra	50	60	95	105	6
Onion	70	35	75	95	6
Parsley	60	40	75	90	13
Parsnip	60	35	65	85	14
Pea	80	40	75	85	6
Pepper	55	60	85	95	8
Pumpkin	75	60	95	100	4
Radish	75	40	85	95	4
Rutabaga	75		80		4
Salsify	75		70		6
Spinach	60	35	70	85	5
Squash	75	60	95	100	4
Sweetcorn	75	50	95	105	3
Swiss Chard	65	40	85	95	4
Tomato	75	50	85	95	6
Turnip	80	40	85	105	3
Watermelon	80	60	95	105	4

When to seed:

Smartplanters