Although members of the Trachelium genus are perennials they are usually grown as half hardy annuals in the garden.
Some Trachelium plants can reach from 60 to 90 cm in height (two to three feet), but others have more of a mat like growth.
Trachelium bloom in the summer and have blue flowers. Their size makes them ideal for use in rock gardens.
Some common names for Trachelium include Throatwort, and Blue Throatwort.
Common Names: Blue Throatwort, Blue Lace Flower, Throatwort.
Growing Region: Zones 3 to 10. As a perennial in zones 5 to 10.
Life Cycle: Half hardy perennial commonly grown as a half hardy annual by gardeners.
Unless you live in very warm areas, it is best to grow throatwort indoors first when growing from seed.
The process should be started in winter about 10 weeks before due to be put outdoors, after the last frost of spring.
Throatwort seeds should be sown on the soil surface. It will take from two to three weeks to germinate at 12 to 16 degrees centigrade (54 to 61°F).
Once ready, transplant the Trachelium plant seedlings outdoors into a shady or partially shady location of the garden. Use a spacing of around 30 cm (1 foot).
The soil that Trachelium plant species grow in should be fertile and have very good drainage. The soil should also be moist, and a touch limey.
Trachelium Plant species such as Blue throatwort are easy to look after. They like a slightly moist soil so water them when the soil starts to dry out. It is also a good idea to protect them from heavy rain in the winter.
If you require more plants, then they can be propagated in spring by taking cuttings.