Verbena family
Verbenaceae
Ver-bee'na.
Vervain
. Tender or hardy annual or perennial herbs, comprising about 200 species, natives of America, with the exception of a few species found in Eurasia.
Description
Leaves generally opposite, usually lobed or toothed. Flowers in various shades of white, lilac, red, and purple, small, sometimes stalked, in terminal spikes or terminal roundish clusters. Calyx tubular, 5-toothed. Corolla tubular, its lobes 5, the tube long and narrow. Stamens 4, in pairs.
How to Grow
Verbena seed is notoriously hard to germinate--only 40 percent can be expected to grow. At 70-75° F (21-24° C) germination occurs in 14-21 days. Sowing seeds early indoors usually gives more predictable results than direct-seeding. Sow seeds indoors in light sandy soil or use a cold frame. Transplant outdoors when danger of frost is past. Set plants out in full sun except in the Deep South and desert areas, where light shade will be needed to reduce drought stress and insect damage. Susceptible to leafminers. Verbenas prefer warm weather.
Verbena - hybrida
Garden Verbena
. To 12 in. (30 cm) high. Flowers fragrant, pink, red, purple, yellow, or white, in compact terminal clusters, 2-3 in. (5.0-7.5 cm) wide. Many cultivars are available, including upright, trailing, or dwarf kinds. This hybrid derives from
V. peruviana
and probably some other subspecies. Tender annual.
Verbena peruviana
Creeping 12-24 in. (30-60 cm) long, rooting at the nodes. Flowers bright red in clusters, 1-2 in. (2.5-5.0 cm) wide. S. Brazil to Argentina. Tender annual.