Archive for the ‘Hibiscus (mallow) sawfly’ Category

Swamp Hibiscus

Swamp hibiscus (Hibiscus coccineus), aka scarlet rose mallow, is a hardy perennial plant that grows in swamps, marches and roadside ditches in the Southeastern U.S. (USDA hardiness zones 5-9). It can grow 6 to 8 feet tall and 2 to 3 feet wide.  Its 5- to 6-inch-long leaves are palmately lobed into 3, 5, or 7 parts. […]

Mallow Plant Breeders Developing Resistance To Hibiscus Sawfly

Mallows, hardy hibiscus, and perennial hibiscus (Hibiscus moscheutos) are vigorous shrub-like growers on sturdy 4-5 feet tall (and 2-4 feet wide) stems. The species is native to wetland areas from Ontario and Massachusetts south to Ohio, Indiana, Alabama and Florida. Huge colorful 4-6(9) inch wide flowers have five overlapping petals with reddish-purple to dark crimson […]

Celebrate Summerific® Rose Mallow (Hibiscus) Week

Perennial hibiscus (Hibiscus moscheutos) is commonly known as rose mallow or dinner plate size hibiscus. Blooms measure a huge 7-9 inches across. Plants are exceptionally hardy, and can withstand winters as cold as zone 4 (-20°F to -30°F) in Minnesota (zone 4) and the heat of zone 9 (20°F -30°F) in Florida. Each flower lasts […]

Hibiscus Sawfly Devastates Plant Foliage

The hibiscus (mallow) sawfly is a devastating pest of hibiscus (Hibiscus moscheutos) and hollyhock (Alcea rosea). The adult sawflies are small, barely a quarter inch long. They are mostly black, except for a yellowish brown spot on their thorax, and their smoky wings. The pale green larvae mature to 1/2 inch in length. The larvae […]