Lilac Beauty is a stunning Asian-type sweet potato with deep purple skin and flesh that delivers gourmet flavor in every bite. Unlike many purple varieties, this heirloom thrives in northern climates where other Asian types struggle, making it accessible to gardeners in zones 7 through 11. Expect to harvest in 90 to 120 days, and prepare yourself for a dry, firm texture and complex flavor that proves purple sweet potatoes are far more than just pretty.
12
Full Sun
Moderate
7-11
?in H x ?in W
—
Moderate
Hover over chart points for details
The flesh is a captivating lilac purple that catches the eye from the moment you pull it from the soil, but the real revelation comes when you taste it. Baker Creek notes this as one of the best purple varieties they've found, with a firm, dry texture that sets it apart from the soft, syrupy sweetness of orange varieties. Most Asian-type sweet potatoes demand warmth and struggle in cooler regions; Lilac Beauty breaks that mold and produces reliably where others falter.
Lilac Beauty shines in applications that honor its dry, firm texture and sophisticated flavor profile. Roast it whole or in chunks to highlight its earthy sweetness, or steam and cube it for salads where its texture holds up beautifully. In Japanese cuisine, this type of potato is traditionally used in tempura, steamed preparations, and even in confections where the lower sugar content allows the natural potato flavor to emerge. The firm flesh resists falling apart during cooking, making it excellent for curries, stir-fries, and other dishes where you need the vegetable to maintain its structure.
No timeline data available yet for this variety.
Transplant slips (rooted vine cuttings) into the garden after soil temperatures consistently reach 75 to 85 degrees Fahrenheit and all danger of frost has passed. In zone 7, this typically means late May or early June. Space plants 12 inches apart. Handle slips gently and keep the root zone consistently moist for the first few weeks as they establish.
Lilac Beauty reaches harvest maturity in 90 to 120 days from transplanting. Harvest before the first hard frost in fall; these potatoes are frost-sensitive and will be damaged or killed by freezing temperatures. Dig carefully around the plant to lift the tubers without bruising them, as any cuts or damage will shorten storage life. Handle the harvested potatoes gently and cure them in a warm (75 to 85 degrees Fahrenheit), humid location for 7 to 10 days before storage to toughen the skin.
Enter your ZIP code to see a personalized growing calendar for this plant.
“Lilac Beauty carries the heritage of Asian sweet potato cultivation, where purple and deep-colored varieties have been prized for centuries in cuisines across Japan, Okinawa, and throughout Southeast Asia. This particular cultivar represents a selection valued for its superior northern performance compared to closely related varieties like the Okinawan purple sweet potato, suggesting a breeding or selection effort to expand the growing range of Asian-type potatoes beyond their traditional subtropical strongholds. As an heirloom, it preserves both the flavor profile and the cold-hardiness improvements that make it viable for American gardeners working in hardiness zones 7 and beyond.”