Daphne mezereum (February Daphne) zone 3 (1m).Red berries add autumn color to the plant. Small, creamy white to flushed pink flowers that develop in May produce the fragrance for this shrub. Daphne burkwoodi (Burkwood Daphne) zone 5 (1.2m).The foliage has excellent yellow to orange color in the fall. The very fragrant white or pink blooms of this shrub are borne on spikes in July. Clethra alnifolia (Summersweet) zone 4 (0.9-2.4m).It is one of the most dependable clematis. This vine develops a display of fragrant white flowers in August followed by fluffy seed heads in autumn. Clematis paniculata (Sweet Autumn Clematis) zone 5.The flowers leaves and twigs all have a sweet fragrance. These shrubs bloom in mid-May with large reddish brown flowers. Calycanthus floridus (Carolina Allspice) zone 5 (1.2-2.4m).Considered by some experts to be much less invasive than the non-sterile Mexican species. This cultivar that is sterile and will not produce seed, but can still spread aggressively by rhizomes and floating pieces of root. Flowers last only one day, but plants often produce an impressive non-stop succession of bloom. Tubular, petunia-like flowers (to 1.5”) bloom freely from the leaf axils from late spring to frost (sometime year round in USDA Zones 8-10) on greenish-purple stems clad with linear, willowy, sword-shaped, green leaves. ‘Purple Showers’ is a vigorous, upright, Mexican petunia (also called Mexican blue bell) that typically grows in a clump to 3-4’ tall. Specific epithet of simplex is in reference to the leaves being simple. Genus name honors Jean de la Ruelle (1474-1537), French herbalist and physician to Francois I (1494-1547) who was king of France from 1515 until his death in 1547. Straight species plants are rarely sold, but several established cultivars are regularly sold (pink, purple or white flowers in tall and dwarf forms). simplex is the preferred name because it has been determined that this was the name first given to this plant in 1870 when it was described in Cuba, and accordingly that name has priority. It is been given a number of different names, including R. Flowers are followed by bean-like pods (to 1” long) which explosively dehisce mature seed in all directions.Ĭonsiderable confusion has existed over the years as to the correct specific epithet for this plant. Flowering is very respectable but less frequent when plants are grown as annuals in northern gardens, but will typically bloom from May to September. Best flowering occurs in the deep South near the temperatures of its Mexican origin where flowers may appear from May to November, but sometimes year round. Tubular, trumpet-shaped, 5-lobed, petunia-like, lavender to violet flowers (to 1.75” long) bloom from the upper leaf axils in loose purple-stemmed clusters (long-stalked cymes). Plants branch from the ground into several woody-based stems clothed with elongated, linear, willow-like, dark green leaves (to 6-12” long and ¾” wide) that are often tinged with purple. It typically grows to 3-4’ tall in the wild, but to 2-3’ tall in gardens. from South Carolina to Texas plus Hawaii, Puerto Rico and the U. It is native to Mexico, but has escaped gardens and naturalized somewhat aggressively in parts of the southeastern U. Ruellia simplex, commonly called Mexican petunia or Texas petunia, is a vigorous, shrubby, woody-based, rhizomatous perennial that is grown as an annual north of USDA Zone 8. ‘Purple Showers’ does not produce seed, but will spread by rhizomes where winter hardy. Easy to propagate by cuttings, division and seed. Louis, however, where these plants are grown as annuals, with stem cuttings overwintered indoors if desired. Invasiveness is clearly not a problem in St. Notwithstanding its value as an excellent flowering plant, this species is currently listed as a Category One invasive species by the Florida Exotic Pest Plant Council (FEPPC) because it has been found to invade natural areas and displace native flora in the State of Florida. Plants will spread by rhizomes and self-seeding in the garden, and have escaped gardens and aggressively naturalized in parts of the southeastern U.S. Cut back stems after flowering to encourage new flowers. Plants also tolerate high heat and humidity. Established plants have respectable drought tolerance. It also does well in average garden soils with even moisture. It thrives as a marginal water plant and in boggy soils. It is a versatile plant that tolerates an extremely wide range of growing conditions. This plant thrives in moist, fertile, humusy but well-drained soils. Winter hardy to USDA Zone 8 (marginally hardy in Zone 7 with protection and mulch) where it is best grown in medium to wet soils in full sun to part shade.
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