Willowleaf

Family: Convolvulaceae Root Vegetable

Silky, creamy flesh with a gentle sweetness—Willowleaf White Sweet Potato develops into a pale, elegant tuber that roasts to a tender, spoon-melting texture and shines in simple preparations.

Its clean, light-colored skin and uniform shape make it a favorite for home gardeners seeking reliable harvests around 90 days, with roots that hold their appeal from garden to serving. Grow Willowleaf for a refined, mellow flavor that’s especially lovely for roasting and for velvety sauces and purées.

Light: Full SunMaturity: 90 DaysHabit: Vine

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jul 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	7

Culinary Notes

Chef's Note

Willowleaf’s white, silky flesh turns buttery and almost custard-soft when roasted, so it behaves beautifully in purées and thick soups without needing heavy add-ins. Keep flavors restrained—pair with browned butter, sage, and a squeeze of citrus to wake up the mild sweetness instead of overpowering it.

Best Uses

hot-roast wedges or cubes until spoon-tender and lightly bronzed
velvety purées (pass through a ricer for that cloudlike texture)
thick soups or chowders where it naturally suspends the body
buttery mash-style sides that don’t need aggressive seasoning

Flavor Profile

mellow sweetness silky, cream-meets-starchiness subtle nutty, caramel-leaning roast notes gentle, not-too-earthy finish

Kitchen Pairings

brown butter coconut milk sage black pepper lime or lemon juice smoked paprika

Frequently Asked Questions

What pest or disease most commonly affects Ipomoea batatas (willowleaf sweet potato), and how can I manage it?

Sweet potatoes (Ipomoea batatas) are often hit by sweet potato weevil—larvae tunnel into storage roots, and infestations start from the soil near plants. Use clean, weevil-free slips, keep planting beds weeded (weevils shelter in volunteer plants), and avoid replanting in the same spot year after year. If you see damaged roots at harvest, discard them and rotate out of sweet potato/other morning-glories for at least 2–3 years.

How often should I water willowleaf sweet potato during the main growing phase?

During active vine growth and early root formation, keep the bed evenly moist but not soggy—aim for soil that holds moisture without staying wet. A practical target is about 2–3 cm (1–1.5 in) of water per week from rain or irrigation, increasing only during hot, dry spells and reducing if the soil remains damp. Avoid heavy soaking near harvest time because waterlogged soil encourages root rots.

How do I tell when Ipomoea batatas (willowleaf sweet potato) is ready to harvest?

Harvest when vines begin to yellow and the roots have had roughly 90 days to size up—use the days-to-maturity as your guide. Before digging, gently check one plant by loosening soil and lifting a few roots to confirm they’re thick enough (not pencil-thin). Harvest before the first hard frost, since cold-damaged roots store poorly.