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Indoor seed starting timetable

Knowing when the last average frost date for your area is important when planning on when to sow seeds indoors. Sown too soon, plants get leggy and may outgrow their containers before transplanting time. Sown too late, you may lose out on long growing crops maturing before fall frost. Here is a chart showing times to sow garden seeds indoors for later transplanting outside.

Please remember to label your seed starting flats with name and date. It will help you know which plants are which as seedlings often look alike.
Please remember to label your seed starting flats with name and date. It will help you know which plants are which as seedlings often look alike.
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Knowing the last average frost date helps you plan when to plant seeds inside.
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Spring sowing guide for vegetables and herbs

10 - 12 weeks before average last frost
eggplant
endive
escarole

8 -10 weeks before average last frost
chamomile
kale
leeks
lovage
onions
peppers
savory
stevia
thyme

6 - 8 weeks before average last frost
basil
catnip
chives
collards
cumin
garlic chives
lemon balm
marjoram
oregano
parsley
tomatoes

4 - 6 weeks before average last frost
arugula
broccoli
brussels spprouts
cabbage
Chinese cabbage
cauliflower
celery
cucumbers
fennel
kohlrabi
lettuce
melons
radicchio
sage
shiso
sorrel
okra
tomatillo
watercress
watermelon

2 - 4 weeks before average last frost
Chinese kale
pumpkins
purslane
rat tail radish
New Zealand spinach
summer squash
winter squash

Please notice some crops are not included, such as carrots. Root crops like carrots, potatoes, and turnips do better when sown outside rather than started indoors.