UC Master Gardeners, Santa Clara County, CA
University of California
UC Master Gardeners, Santa Clara County, CA

Sweet Potatoes

Garden Help > Vegetables

UC Links

Sweet potato
How to grow: Sweet potatoes, UC Davis Vegetable Research and Information Center

Pest management

The Basics

When to plant: May–June

Harvest window:

  • Sweet potatoes take 3–4 months to mature. Leave them in the ground until the roots are full grown and the vines begin to turn yellow.
  • Handle carefully to prevent skinning and bruising.
  • Sugars will increase in storage.
  • Traditionally, sweet potatoes were 'cured' immediately after harvest. While not necessary, the process does promote longer lasting storage. Proper curing conditions are 85°F at 85% relative humidity for 4 to 7 days with ventilation.

Care overview

  • Sweet potatoes grow best in light, sandy soils.
  • Once the vines spread to cover the ground, little weeding is required.
  • Do not water during the last 3 to 4 weeks before harvest to protect the developing roots.

More links

Recommended Varieties for Santa Clara County

There are no specific variety recommendations for Santa Clara County yet. Refer to the UC Davis Vegetable Research and Information Center sweet potato overview for recommended varieties for California.

 
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