This bone-hardy plant, surprisingly in the rose family, makes attractive creamy sprays of bottle brush-flowers which open from pink buds. It is a clumpy, mat-forming perennial herb growing in cracks and crevices in riverside cliffs in the state of Washington.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.
Common name:Halfshrub Rockmat, Chelan Rockmat, Spiraea cinerascens, Petrophyton cinerascens
Packet Content:20+ (Approx)