Sowing
- Acquire sweet potato slips from a nursery or start your own by suspending a sweet potato in water until it sprouts "slips" or vines.
- Wait until the soil has warmed up to at least 70°F (21°C) before planting sweet potato slips, usually in late spring or early summer.
- Choose a sunny location with well-drained, loose soil. Sweet potatoes prefer slightly acidic to neutral soil with a pH of 5.8-6.2.
- Plant the slips about 2 inches deep in mounds or ridges, spacing them 12-18 inches apart in rows. Rows should be about 3-4 feet apart.
- Water the plants thoroughly after planting.
Growing
- Keep the soil consistently moist, especially during the initial growth period.
- Sweet potatoes are vigorous growers and may spread widely. It's a good idea to use mulch to suppress weeds and retain soil moisture.
- Fertilize with a balanced, all-purpose fertilizer when planting and once or twice during the growing season.
Harvesting
- Sweet potatoes are typically ready for harvest in 90-170 days, depending on the variety and growing conditions.
- Harvest sweet potatoes in the fall, after the vines have died back and the skins have cured. Cure the sweet potatoes by leaving them in a warm, humid place for about a week.
- Carefully dig up the sweet potatoes with a garden fork to avoid damaging the roots.
Storing
- Store cured sweet potatoes in a cool, dark, and well-ventilated location, such as a root cellar or a cool pantry.
- Properly stored sweet potatoes can last for several months.
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