|Saxifraga cochlearis rosettes; photo by Todd Boland|
|Saxifraga cochlearis flowers; photo by Todd Boland|
- Description and general information
- This species is one of the Ligulatae group of saxifrages, commonly known as the encrusted or silver saxifrages. It has a very restricted natural range being found in the Maritime Alps near the towns on Tende, Val de Cairos and Brigue, France and in southeast Genoa, Italy.
- Plants produce relatively small rosettes of stiff, narrow, silvery leaves with a distinct spoon-shaped tip. Flower stems arise 10-25 cm and produce a loose spray of up to 60 white flowers which occasionally may be spotted red. This species is among the last of the silver saxes to bloom.
- Cultivation is generally easy. Full morning sun is preferred with some shade from the hottest part of the day. In the wild, these saxes often grow on east to north-facing cliffs. While this species naturally grow on limestone they are not obligate to it.
- The small stature of this species makes tghem ideal candidates for troughs, tufa gardens, crevice gardens and pot culture.
- Bloom period
- April in warmer climates but into July in colder areas.
- This species may be propagated from rosette cuttings, division or seed.
- According to the Ontario Rock Garden Society seed germination guide Sow @ 20C for 6 weeks, then place @ 4C for 6 weeks, then slowly raise temperature to 10C for 6 weeks. If there is no germination, repeat the cycle.
- Having noting this, I have successfully germinated seed by surface-sowing the seed, covering them in fine grit, gently water them then placing the pot in a root cellar (2-5 C) for 8 weeks. They were then subjected to 10-15 C where they germinated within 3-4 weeks. Fresh seed certainly germinates the best. be forwarned. The silver saxes will freely interbreed when given the chance so depending on the seed source, you may end up with a hybrid.
- Larger clumps may be divided in early spring or after they have finished flowering.
- Individual rosettes may be broken off in mid-summer and rooted in a shaded sand bed.
- 1 Silver Saxifrages by Beryl Bland
- 2 www.onrockgarden.com
Created by Todd Boland.
Last Modification: Wednesday 03 of August, 2011 10:30:30 CDT by Hannah.
The original document is available at http://nargs.org/nargswiki/tiki-index.php?page=Plant+of+the+Month+August+2011