When to Plant Vegetables in Rapid City, SD

Your vegetable planning guide for
Rapid City, SD

On average, your frost-free growing season starts May 9 and ends Sep 27, totalling 141 days. You will find both Spring and Fall planting guides on this page.

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For the Spring:
Your planting strategy:
Cole crops like broccoli, cauliflower, and cabbage can be direct seeded into your garden around March 28, assuming the ground can be worked, but it's better to start them indoors around February 29 and then transplant them into the garden around April 19. Do the same with lettuce and spinach.

Plant onion starts and potatoes around March 10. Sow the seeds of peas (sugar snap and english) at the same time. If the ground is still frozen, then plant these as soon as the ground thaws.

Do you want to grow tomatoes, peppers, and eggplants? Start these indoors around February 29. Then, around May 5 you should start watching the weather forecast and, as soon as no frost is forecast, go ahead and transplant those into the ground.

Now, for all the summer vegetables like beans, cowpeas, corn, squashes, pumpkins, cucumbers, watermelons, gourds and sunflowers, you should plant those seeds directly into the ground around May 9, or if your soil is still very cold, once the soil is near 60° F in temperature. Having said that, we note that your location has a shorter than average growing season. Many summer vegetables need more days to mature than your area will provide. For that reason, we recommend you get a head-start by starting these summer vegetables indoors around April 19, and transplant those seedlings out after the danger of frost is past.

Okay, now here are the cold, hard numbers, along with specific plants:

CropSow seeds indoorsTransplant seedlings into the gardenDirect sow seeds
Asparagusn/aMar 25 - Apr 9n/a
Beansn/an/aMay 9 - Jun 6
Beetsn/an/aMar 14 - Mar 28
BroccoliFeb 29 - Mar 14Apr 11 - Apr 25n/a
Brussel SproutsFeb 29 - Mar 14Apr 11 - Apr 25n/a
CabbageFeb 29 - Mar 14Apr 11 - Apr 25n/a
Cantaloupen/an/aApr 25 - May 9
Carrotsn/an/aMar 28 - Apr 25
CauliflowerFeb 29 - Mar 14Apr 11 - Apr 25n/a
Chardn/an/aMar 28 - Apr 11
CollardsFeb 29 - Mar 14Apr 11 - Apr 25n/a
Cornn/an/aMay 9 - May 23
Cucumbersn/an/aMay 9 - May 23
EggplantsFeb 29 - Mar 14May 9 - May 23n/a
Gourds, Squash and Pumpkinsn/an/aMay 9 - May 23
KaleFeb 29 - Mar 14Apr 11 - Apr 25n/a
KohlrabiFeb 29 - Mar 14Apr 11 - Apr 25n/a
LettuceFeb 29 - Mar 14Mar 28 - Apr 25Mar 28 - Apr 25
MustardFeb 29 - Mar 14Apr 11 - Apr 25n/a
Okran/an/aMay 9 - May 23
OnionsFeb 22 - Feb 29Mar 10 - Apr 9n/a
Peas (English)n/an/aMar 10 - Apr 9
Peas (Southern)n/an/aMay 9 - Jun 6
Peas (Sugar Snap)n/an/aMar 10 - Apr 9
PeppersFeb 29 - Mar 14May 9 - May 23n/a
Potatoesn/an/aMar 10 - Apr 9
Radishesn/an/aMar 25 - May 23
SpinachFeb 29 - Mar 14Apr 11 - Apr 25Mar 25 - Apr 25
Sweet Potatoesn/aMay 9 - May 30n/a
TomatoesFeb 29 - Mar 14May 9 - May 23n/a
Watermelonn/an/aMay 9 - May 23

For the Fall:
Your fall planting strategy:
Gardening in the fall can be much more challenging than spring planting, because you are in a race to get your crops mature and harvested before the winter frosts begin, around September 27. This means you need to consider how much time each variety needs between planting and picking. Those numbers vary widely between different varieties of the same kinds of plants! Usually the "Days to Harvest" are present on the seed packet.

Most tomatoes, peppers and eggplants, for example, require around 100 days to harvest, therefore you'd want to transplant those into the ground around June 19. Anyway, it's important to remember that the numbers in this fall planting guide are only a starting point for you! Good luck and good gardening to you.

Fall is the time to plant garlic. Around August 13, take your cloves apart and plant the toes about 3 to 4 inches deep. This may not be accurate! Garlic dates vary wildly around the country. The way to be sure is to use a soil thermometer. When the soil temperature is 60° at a depth of 4 inches, then plant your garlic.

Cole crops like broccoli, cauliflower, and cabbage can be direct seeded into your garden around July 19, but because of the heat during that time of year, it's better to start them indoors around May 30 and then transplant them into the garden around July 9. Do the same with lettuce and spinach.

Sow peas directly around July 14.

Now, for all the usual hot weather veggies like beans, cowpeas, corn, squashes, pumpkins, cucumbers, watermelons, gourds and sunflowers, you should plant those seeds directly into the ground around June 14.

Okay, now here are the cold, hard numbers, along with specific plants:

CropSow seeds indoorsTransplant seedlings into the gardenDirect sow seeds
Beansn/an/aJun 14 - Jul 14
Beetsn/an/aJul 14 - Aug 28
BroccoliMay 3 - Jun 17Jun 14 - Jul 29n/a
Brussel SproutsMay 3 - Jun 17Jun 14 - Jul 29n/a
CabbageMay 3 - Jun 17Jun 14 - Jul 29n/a
Cantaloupen/an/aMay 30 - Jun 14
Carrotsn/an/aJun 29 - Aug 28
CauliflowerMay 3 - Jun 17Jun 14 - Jul 29n/a
Chardn/an/aJun 14 - Aug 28
CollardsMay 30 - Jul 14Jun 29 - Aug 13n/a
Cornn/an/aJun 14 - Jun 29
Cucumbersn/an/aJun 14 - Jun 29
EggplantsApr 18 - May 3May 30 - Jun 14n/a
Garlicn/an/aJul 14 - Aug 28
Gourds, Squash and Pumpkinsn/an/aMay 15 - Jun 14
KaleMay 3 - Jun 17Jun 14 - Jul 29n/a
KohlrabiMay 3 - Jun 17Jun 14 - Jul 29n/a
LettuceJun 29 - Jul 29Jul 29 - Aug 28Jul 29 - Aug 28
Mustardn/an/aJul 29 - Aug 28
Okran/an/aMay 15 - Jun 14
Onionsn/an/aAug 28 - Sep 7
ParsleyMay 15 - Jun 29Jun 29 - Aug 13n/a
Peas (English)n/an/aJun 29 - Jul 29
Peas (Southern)n/an/aMay 15 - Jun 14
Peas (Sugar Snap)n/an/aJun 29 - Jul 29
PeppersApr 23 - May 8Jun 4 - Jun 19n/a
Potatoesn/an/aJun 29 - Jul 29
Radishesn/an/aJul 29 - Aug 28
SpinachJun 14 - Jul 29Jul 14 - Aug 28Jul 14 - Aug 28
TomatoesApr 23 - May 8Jun 4 - Jun 19n/a
Turnipsn/an/aAug 13 - Sep 12
Watermelonn/an/aMay 15 - Jun 14

How accurate is all this? For nearly all locations, we are confident in the dates. There are, however, some difficult areas of the world that don't match up perfectly with the dates we have given. For that reason, we recommend you use this guide as a very good starting place, but don't interpret the dates as absolutely perfect for every location.

Did you find this useful? Garden.org has a vast array of useful features. May we recommend that you take a look at our excellent food gardening guide?
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