This species bears dome-shaped flower heads several inches across that are crowded with tiny, tubular amethyst or white flowers that look somewhat like the blooms of an allium. It has lance-shaped, toothed leaves in hues of cordovan purple or deep green brushed with plum highlights. It blooms over a long season. Though it is a perennial, blue throatwort performs wonderfully as an annual and blooms summer to fall. Plants grow to about 3 feet tall and wide.
Noteworthy CharacteristicsExcellent cut flowers.
CareProvide neutral to slightly acidic, well-drained soil in full sun with some shade in the heat of the day.
PropagationSow seed in a cold frame when ripe or at 55° to 60°F in spring, or where they are to bloom in late spring. Rooted cuttings may be overwintered in a protected place.
ProblemsAphids, spider mites.
- Genus : Trachelium
- Plant Height : 1 to 3 feet
- Plant Width : 1 to 3 feet
- Zones : 10, 11, 9
- Uses : Containers
- Bloom Time : Early Fall, Late Summer, Summer
- Light : Full Sun
- Maintenance : Low
- Moisture : Medium Moisture
- Growth Rate : Moderate
- Plant Type : Perennials
- Characteristics : Showy Foliage
- Plant Seasonal Interest : Summer Interest
- Flower Color : White