Bright red flowers about 7 inches across open up and down the stems of this upright rose mallow. Hibiscus Summerific® 'Valentine's Crush' grows about 5 feet tall and 3 1/2 feet wide in full sun or part sun, hardy from Zone 4 through Zone 9, and reaches full height by its second or third summer.
Its narrow, columnar habit keeps the stems upright instead of flopping open in midsummer.
Hardy hibiscus, also called rose mallow, comes from species native to marshes and wet ground across eastern North America, and the modern hybrids keep that tolerance for heavy, damp soil along with full sun and summer heat. Each flower lasts one to two days, but a plant sets enough buds to keep new ones opening for weeks, and hummingbirds and bees come to the big flowers. Rose mallow is one of the last perennials to wake up in spring, often not showing until late May, so a bare spot in April is normal. The stems die back to the ground each winter.
The narrow shape fits a tight spot along a walk, a fence or a driveway.
Size at Maturity
Height 60" Spread 42"
Growing Zone
USDA Hardiness Zones 4-9
Lowest Temperatures -30°F to -20°F
Light Requirements
Full sun to part sun- at least 4 hours direct sun per day
Wildlife Benefits
Special Conditions
Seasons of Interest
How to Plant
Give your new plant the best start possible. Click here for general planting instructions.
Grow With Confidence
We stand behind every plant we ship. Click here to view our warranty.