August Planting Calendar

Extend the season with summer starts

August is a good month to sow or plant the following flowers for an early spring display next summer. Depending on your region, some will even provide a bit of show in the next several months before the killing frosts arrive.

Check the Zone Map and Frost Dates for your region.


SOW IN OPEN GROUND - Alyssum, Baileya, Celosia, Centaurea, Cineraria, Cosmos, Flax, Impatiens, Malcomia, Mallow, Nasturtium, Nemophila, Pansies, Penstemon, Periwinkle, Petunia, Stevia, Stocks, Sweetpea, Venidium, Viola, Xanthisma, Zinnia.

SEED IN FLATS - Alonsoa, Antirrhinum, Canterburybells, Coreopsis, Cynoglossum, Delphinium, Gaillardia, Iceland Poppy, Impatiens, Forget-me-not, Iberis, Nemesia, Pansies, Penstemon, Periwinkle, Pinks, Phlox, Poppies, Primula, Trachelium, Verbena, Viola, Xanthisma, Zinnia.

PLANTS - Bergenia, Celosia, Centaurea, Coreopsis, Gaillardia, Petunia, Salpiglossis, Salvia, Stocks, Torenia, Zinnia.

BULBS-CORMS-TUBERS - Anomatheca, Dierama, Dipidax, Freesia, Gladiolus, Lilium, Nerine, Oxalis, Ranunculus, Sternbergia, Watsonia.

DIVISION OR CLUMPS - Arum, Bergenia, Dipidax, Nerine, Pasithia, Tritoma, Tritinia, Zephyranthes.


SOW SEEDS OUTDOORS - Arugula, Basil, Broccoli raab, Cabbage, Cauliflower, Cilantro, Collards, Kale, Lettuce, Mache, Oriental greens, Radishes, Salad greens, Shallot bulbs, Snow Peas.

PLANT STARTS - (early in the month)-Broccoli, Brussel sprouts, Cabbage, Cauliflower, Collards, Kale.(through the month)-Artichoke, Basil, Celery, Chives, Cucumber, Dill, Eggplant, Green onion, Lettuce, Oriental greens, Parsley, Peppers, Salad greens, Summer squash, Tomatoes.

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