How to Grow Kolibri Purple Sweet Potato
Ipomoea batatas 'Kolibri'
Kolibri Purple Sweet Potato is a vibrant warm-season root vegetable prized for its deep purple flesh and sweet flavor. Gardeners grow it for its high yield, ease of cultivation, and ability to thrive in containers or large garden beds with minimal pest pressure.
📷 Wikimedia CommonsStarting Kolibri Purple Sweet Potato: indoors or direct sow?
🌾 Sow directly in the garden — Kolibri Purple Sweet Potato is not usually started indoors.
Do not transplant seeds; start with pre-grown slips outdoors only after the last frost date when soil is warm.
Soil, care & harvest
Prepare loose, well-drained soil with a pH between 5.8 and 6.2. Since this is a warm-season crop sensitive to cold, start slips indoors only after the last spring frost when soil temperatures are consistently warm. Do not sow seeds directly; instead, plant established slips outdoors once all danger of frost has passed.
Space plants 12 to 18 inches apart in rows spaced about three feet wide. Provide support or trellising if vines grow excessively long in your climate. Water deeply about one inch per week, ensuring the soil stays moist but not waterlogged once established. Apply mulch around the base to retain moisture and suppress weeds.
Watch for sweet potato weevils, flea beetles, and wireworms; use row covers or hand-pick pests early. Prevent black rot and fusarium wilt by avoiding overwatering and ensuring good drainage. Harvest the roots 90 to 120 days after planting slips when foliage begins to yellow and die back naturally.
When to Plant Kolibri Purple Sweet Potato
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | — | June – July | September |
| Zone 2 | — | May – July | September |
| Zone 3 | — | May – June | August – October |
| Zone 4 | — | April – June | August – October |
| Zone 5 | — | April – May | July – November |
| Zone 6 | — | April – May | July – November |
| Zone 7 | — | March – May | July – November |
| Zone 8 | — | March – April | June – December |
| Zone 9 | — | February – March | May – December |
| Zone 10 | — | January – March | May – December |
| Zone 11 | — | January – February | April – December |
| Zone 12 | — | January – February | April – December |
| Zone 13 | — | January – February | April – December |
Companion Plants for Kolibri Purple Sweet Potato
✓ Good companions
Fixes nitrogen in soil to benefit sweet potato growth without competing for space
Quick-growing crop that can utilize space before sweet potato vines spread extensively
Deters nematodes and sweet potato weevils with their strong scent and root secretions
Repels sweet potato weevils, Colorado potato beetles, and aphids while acting as trap crop
Repels many harmful insects and doesn't compete with sweet potato's spreading growth habit
Attracts beneficial insects while requiring minimal ground space
Cool-season crop that can be harvested before sweet potatoes spread, maximizing garden space
Natural pest deterrent that grows low and won't interfere with sweet potato vines
✗ Keep away from
Allelopathic compounds inhibit sweet potato growth and tall plants create excessive shade
Both are heavy feeders competing for nutrients, and share similar pest problems
Produce juglone which is toxic to sweet potatoes and inhibits root development
Nutrition Facts
Per 100g serving (USDA FoodData Central)
