Trachelium caeruleum
Trachelium Caeruleum
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Trachelium Caeruleum (Trachelium caeruleum) - Description
Trachelium caeruleum (common name blue throatwort) is a species of flowering plant in the family Campanulaceae, native to the western and central Mediterranean. Growing to 120 cm (47 in) tall by 30 cm (12 in) wide, it is a woody-based erect herbaceous perennial, with oval leaves and dense cushions of violet-purple flowers in summer. The specific epithet caeruleum means "dark blue". In temperate areas this plant is usually grown as a half-hardy annual for summer bedding schemes or planters. It has gained the Royal Horticultural Society's Award of Garden Merit.
Trachelium Caeruleum (Trachelium caeruleum) - Blooming
Bears tubular, white or lavender, flowers during the summer. Blooms are borne solitary or in corymbs.
Trachelium Caeruleum (Trachelium caeruleum) - Growth
Wood-based perennial. Grows best in full sun with some shade during the middle of the day. Some species are dwarfs, which work well in a rock garden or scree bed. Other cultivars are nice for a border. The flowers of Trachelium are suitable for cutting.
Trachelium Caeruleum (Trachelium caeruleum) - Planting
Less hardy species should be propagated from the seed in early spring at 55-61°F (13-16°C), or "in situ". Hardy species should be sown when ripe in containers in a cold frame (for protection). Can also propagate from softwood cuttings in summer.
Trachelium Caeruleum (Trachelium caeruleum) - Pest
Aphids and spider mites.
Trachelium Caeruleum (Trachelium caeruleum) - Interesting facts
Trachelium is native to the calcareous soils of the Mediterranean.
Trachelium Caeruleum (Trachelium caeruleum) - Soil and irrigation
Needs well-draining soil. T. asperuloides grows best in alkaline soil. If growing plants in an alpine house, use loam, leaf mold, and sharp sand in equal proportions as soil.
