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Ipomoea batatas
Growing calendar
Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.
Guides
- How to Plant Sweet Potato Slips: Timing, Depth and Spacing
- Sweet Potato Soil Prep: Ridges, Low Nitrogen and Roots Instead of Vine
- Sweet Potato Care: Watering, Feeding and Managing the Vines
- Sweet Potato Growing Calendar: The Whole Season Step by Step
- Sweet Potato Pests and Diseases: Wireworm, Weevil, Voles and Rot
- Curing Sweet Potatoes: How to Make Them Sweet and Store for Months
Common problems
Start from what you can see on the plant.
Pests and diseases (57)
Problems recorded for this plant, most serious first.
Vine Overgrowth
MajorDisorder
Leaves grow large and dark green and the vines keep running vigorously, but no flowers or fruit set. In sweet potato the tubers fail to bulk up.
Root-lesion Nematode
MajorPest
Elongated blackish brown necrotic lesions form on the root surface and fine roots rot away. Above ground the stand is uneven and plants stay small with pale foliage.
Tobacco Cutworm
MajorPest
Many larvae gather on the leaf underside and graze the tissue away, leaving white skeletonized patches. Once they disperse they cause heavy damage to leaves, pods and fruit.
Scarab Grubs
CommonPest
The plant wilts despite watering and growth halts abruptly. Lift the plant and there are almost no roots; dig into the soil and white C-shaped grubs appear.
Root-knot Nematode
CommonPest
The plant wilts in the daytime and does not recover with feeding or watering. Pull it up and the roots carry beaded chains of galls of varying size with few fine roots.
