Sempervivum arachnoideum is succulent from the family of Crassulaceae, native to Alpes, Carpathians, and the Apennines. Cobweb Houseleek is a low-growing, evergreen, perennial plant. It forms a mat of flashy rosettes up to 1.2 inches (3cm) in diameter. Leaves are reddish or green with cobwebby white hairs growing from the tips. This succulent blooms with starry pink flowers up to 0.4 inches (1cm) in width, growing in flat cymes on stems up to 5 inches (12.5cm) tall.
Master of Adaptation
Cobweb Houseleek tends to adapt very easily to any local conditions. That fact combined with a small gene pool, this succulent becomes form or variety pretty quickly. Cobweb Houseleek becomes perfectly adapted to heat and cold conditions quickly, as well as climate conditions like rain and snow.
Sempervivum arachnoideum makes a perfect genetic basis for many varieties, influencing the growing habits, adaptability and look of a hybrid with its special characteristics. It can make low maintenance hardy succulent that will look amazing in crevice gardens, trough gardens, hypertufa pinch pots, and many more succulent arrangements.
Grow and Care Tips
Cobweb Houseleek thrives in full sun to partial shade. When it comes to soil, like most succulents, it needs a well-draining mix. You can get some sandy, poor soil or add some peat into heavier soil, to lighten it and improve drainage. You should water your Cobweb Houseleek regularly during the growing season, allowing the soil to dry out between watering. In winter months, this succulent need just a few drops from time to time.
Cobweb Houseleek is easy to grow in a container. It will begin to form tight clusters of rosettes and fill up the pot very quickly. However, this succulent is ideal for Sempervivum walls, topiary or mosaics, as its fibrous and shallow root system can hold soil in place even when planted vertically.
After Cobweb Houseleek blooms and produces seeds, it will die. However, you`ll be left with many root offsets from which you can easily propagate again. Just make sure the soil mix is well-draining and place it in partial shade until the new plant roots. The best time of year for propagating is spring.