DibbleGrowing sweet potatoes: from seed to harvest
Plant slips once the soil is thoroughly warm, because they sulk in cool ground. Keep them watered until they establish. Where frost is possible, harvest before it blackens the vines.
Planting dates for sweet potatoes by zone
| Zone | Start seeds indoors | Sow or transplant | Harvest |
|---|---|---|---|
| Zone 3 | Not suited | ||
| Zone 4 | not needed | June 5 | September 11 |
| Zone 5 | not needed | May 18 | September 17 |
| Zone 6 | not needed | May 17 | September 18 |
| Zone 7 | not needed | May 5 | August 21 |
| Zone 8 | not needed | April 10 | July 14 |
| Zone 9 | not needed | March 17 | June 22 |
| Zone 10 | not needed | March 27 | May 29 |
| Zone 11 | not needed | January 1 | April 23 |
Each date is the start of the best window from the same climate engine the Dibble app uses, run at typical places in each zone. Dibble tunes them to your garden's own location and lets you adjust frost dates for your own yard.
Companion plants
Good neighbors for Sweet Potato:
Better kept apart:
Family and rotation
Sweet Potato is in the morning-glory family family. Sweet potato. Rotate from the root slot. Learn about crop rotation.
Related crops
Tomato
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When to plant
Questions
When should I plant sweet potatoes?
It depends on your zone. Sweet Potato is a tender crop, so the timing follows your last spring frost. Look up your zone in the table below for exact start, sow, and harvest dates, or open Dibble and set where your garden is to get your own calendar.
How long does it take to grow sweet potatoes?
About 100 days from transplant to the first harvest, with a picking window of roughly 14 days after that.
What grows well with sweet potatoes?
Good companions include Bean (bush), Marigold. Keep it away from squash.
Plant at the right time this season
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