Androsace are miniature and very beautiful soil-cover plants belonging to the Primrose family.
They can be annuals or perennials, including evergreens, forming compact curtains or mats.
The genus has more than 40 species of plants, some of which grow in the mountains of Tibet, in the Himalayas and China, and about twenty species are found in the Alps, Pyrenees and Carpathians.
Androsace in nature grows in a layer of coarse gravel or on screes in vertical clefts of rocks or in sandy wet but well-drained soil, so the miniature soil-cover needs to provide the garden with similar living conditions.
Tips for care
Most species thrive in the full sun. Full development is facilitated by timely irrigation and good air circulation, which can be ensured by sprinkling fine gravel under the base of the bushes. This is also an excellent prevention of fungal diseases. An important condition for overwintering is that there is no excess moisture in the soil, which leads to rotting of the roots, so from September watering is almost completely stopped.
The plant is vulnerable to fungal diseases in high humidity. Remove dead sockets in good time to reduce the risk of infection and prevent soil moisture from stagnating.
Androsace can be divided into two groups. The first group is easily cultivated species such as A. lanuginosa and the second group is stemless plants which grow only in rocky rifts.
Vegetative reproduction is done by rooting the cuttings of a single socket. The cuttings are taken at the right stage of growth. New rosettes usually begin to develop at the end of the flowering period and after their formation, in June-July part of the stem with the heel cut off and placed in wet sand. Rooting usually takes 4 to 8 weeks.
During seed multiplication, the planting material is sown in containers in an open greenhouse in spring. The seedlings appear unevenly, so be careful when diving the seedlings.