Umbilicus rupestris
Navelwort · Wall Pennywort
Family CrassulaceaeGenus Umbilicus
Also published as Cotyledon umbilicus-veneris. You are in the right place.
This source reports three treatments. All are shown.
Protocol 1
DerivedN. C. Deno, 1993Difficulty Very high Rated by us, not by the source.
Start around March 15, 2027 for a May 3 last frost.
- 1
Sow and cover
Temperature: 70°F 21°C
No stated waiting before sowing. Then 21 days to germinate.
5% germination in 21 days.
5% in the third week, and that is the whole of Deno's result for the species.
Protocol 2
DerivedN. C. Deno, 1993- 1
Sow on the surface — do not cover
Temperature: 70°F 21°C · Light: light
Nothing.
No stated waiting before sowing.
0% germination.
Nothing in light.
Protocol 3
DerivedN. C. Deno, 1993- 1
Cold moist stratification
Duration: 90 days · Temperature: 40°F 4°C
Deno gives no length for this period; three months is his standard cycle.
- 2
Sow and cover
Temperature: 70°F 21°C · Light: dark
Nothing.
about 3 months from start to sowing.
0% germination.
Nothing after a cold period, sown in the dark.