Culture
Winter hardy to USDA Zones 9-10. In St. Louis, it is usually grown as an annual. Easily grown in average, medium, well-drained soils in full sun to part shade. Good soil drainage is important for this plant. When grown as an annual, this plant may be sited directly in the soil or in containers that can be overwintered indoors. Although somewhat drought-tolerant once established as a perennial in southern areas, it prefers regular moisture when grown as an annual. Best flowering is in full sun conditions. Thrives in high heat.
Noteworthy Characteristics
Hamelia patens, commonly called scarlet bush or Texas firebush, is native to Southern Florida, Mexico, Central and South America. It is also commonly known as Mexican firecracker or firecracker shrub because of the similarity of its flowers to firecrackers. Where this shrub may be grown as a perennial, it is evergreen, will rise to as much as 10-15’ tall and will bloom year-round. As an annual in the St. Louis area, it typically rises to 2-3’ tall in a growing season and blooms in summer and early fall. Tubular orange-red to red flowers appear in terminal clusters (cymes) in summer and fall. Whorls of pointed, oval, gray-green leaves (to 6” long) with pinkish veins. Leaves turn red in fall. Reddish stems and leafstalks. Flowers give way to small dark fruits. Butterflies and hummingbirds are reportedly attracted to the flowers, and birds enjoy the fruits.
Genus name honors Henri Louis du Hamel du Monceau (1700-1781), celebrated French writer on trees and shrubs.
Specific epithet means spreading.
'Grelmsiz' is a selection of scarlet bush that features yellow to chartreuse colored foliage and terminal clusters of 1" long, red, tubular flowers. The flowers are highly attractive to hummingbirds. Mature plants will reach up to 4' tall and equally as wide while taking on a well-branched, bushy habit. Will reach up to 2' tall with a similar spread if grown as an annual. Commonly sold at nurseries and garden centers under the name LIME SIZZLER. Plant patent number PP26247 applies to this cultivar.
Problems
No serious insect or disease problems.
Uses
As a perennial, it grows well in hedges, borders and as an accent plant. As an annual, it may be grown in borders, cottage gardens or containers. Interesting plant for butterfly and bird gardens.