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Home > Guides > Seed Starting > Seed Starting Calendar |
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Seed Starting Calendar Chart | When to Start Seeds Indoors |
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This calendar is based on an average last frost date of May 20. There should be less than a 10% chance of a frost after this date. Before moving plants outdoors on or around May 20, check the latest weather forecast to see if a frost is likely in the next few days. If the predicted low is under 40° F on any of the next few days, it is best to delay moving plants out until the chance of frost has passed. If a late frost is predicted after tender plants have been planted out, protect them with a layer of paper or cloth (not plastic) draped lightly over the plants.
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Date |
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February 25 |
Broccoli, Cabbage, Parsley |
Sow Seed Indoors |
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March 15 |
Cauliflower, Celery, Onions |
Sow Seed Indoors |
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March 25 |
Cucumber, Swiss Chard |
Sow Seed Indoors |
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Turnip |
Sow Seed Outdoors |
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April 1 |
Eggplant, Lettuce, Peppers |
Sow Seed Indoors |
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April 8 |
Basil, Tomatoes |
Sow Seed Indoors |
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Peas, Spinach |
Sow Seed Outdoors |
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April 15 |
Collards |
Sow Seed Indoors |
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Broccoli, Cabbage, Cauliflower, Collards, Kale, Parsley |
Sow Seed Outdoors |
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Broccoli, Brussels Sprouts, Cauliflower, Parsley |
Transplant Outdoors |
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April 22 |
Carrots, Kohlrabi, Lettuce, Onions,
Potatoes, Radish, Sweet Peas |
Sow Seed Outdoors |
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Cabbage, Collards, Kale, Kohlrabi, Lettuce, Onions |
Transplant Outdoors |
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April 29 |
Beets, Leek, Swiss Chard |
Sow Seed Outdoors |
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May 6 |
Pumpkins, Summer Squash |
Sow Seed Indoors |
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Celery |
Sow Seed or Transplant Outdoors |
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May 20 |
Melons, Winter Squash |
Sow Seed Indoors |
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Corn, Summer Squash |
Sow Seed Outdoors |
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May 27 |
Beans, Eggplant, Sweet Potatoes |
Sow Seed Outdoors |
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Basil, Cucumber, Tomatoes |
Sow Seed or Transplant Outdoors |
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Summer Squash, Tomatoes |
Transplant Outdoors |
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June 3 |
Melons, Peppers, Pumpkins, Winter Squash |
Sow Seed or Transplant Outdoors |
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Eggplant |
Transplant Outdoors |
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June 17 |
Okra |
Sow Seed or Transplant Outdoors |
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Heirloom seeds are the gardeners choice for seed-saving from year-to-year. Learning to save seeds is easy and fun with these books. Before you harvest, consider which varieties you might want to save seeds from so that your harvesting practice includes plants chosen for seed saving. Be sure to check out our newest seed packs, available now from Heirloom Organics. The Super Food Garden is the most nutrient dense garden you can build and everything you need is right here in one pack. The Genesis Garden s a very popular Bible Garden collection. The Three Sisters Garden was the first example of companion planting in Native American culture. See all of our brand-new seed pack offerings in our store.
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Variety |
Notes |
Date |
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Basil |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Beans |
Sow Seed Outdoors |
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Beets |
Sow Seed Outdoors |
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Broccoli |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Brussels Sprouts |
Transplant Outdoors |
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Cabbage |
Sow Seed Indoors |
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| Sow Seed Outdoors |
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| Transplant Outdoors |
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Carrots |
Sow Seed Outdoors |
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Cauliflower |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Celery |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Collards |
Sow Seed Indoors |
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| Sow Seed Outdoors |
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| Transplant Outdoors |
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Corn |
Sow Seed Outdoors |
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Cucumber |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Eggplant |
Sow Seed Indoors |
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| Sow Seed Outdoors |
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| Transplant Outdoors |
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Kale |
Sow Seed Outdoors |
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| Transplant Outdoors |
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Kohlrabi |
Sow Seed or
Transplant Outdoors |
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Leek |
Sow Seed Outdoors |
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Lettuce |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Variety |
Notes |
Date |
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Melons |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Okra |
Sow Seed or
Transplant Outdoors |
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Onions |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Parsley |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Peas |
Sow Seed Outdoors |
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Peppers |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Potatoes |
Sow Seed Outdoors |
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Pumpkins |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Radish |
Sow Seed Outdoors |
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Squash, Summer |
Sow Seed Indoors |
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| Sow Seed Outdoors |
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| Transplant Outdoors |
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Squash, Winter |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Sweet Peas |
Sow Seed Outdoors |
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Sweet Potatoes |
Sow Seed Outdoors |
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Swiss Chard |
Sow Seed Indoors |
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| Sow Seed Outdoors |
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Tomatoes |
Sow Seed Indoors |
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Sow Seed or
Transplant Outdoors |
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Turnip |
Sow Seed Outdoors |
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