This source reports two treatments. Both are shown.
Protocol 1
DerivedN. C. Deno, 1998Difficulty Moderate Rated by us, not by the source.
- 1
Sow outdoors and leave it
No stated waiting before sowing.
30% germination.
This source doesn't state how long.
Protocol 2
DerivedN. C. Deno, 1998Difficulty High Rated by us, not by the source.
Start around February 1, 2027 for a May 3 last frost.
- 1
Sow and cover
Temperature: 70°F 21°C · Light: light
No stated waiting before sowing. Then 63 days to germinate.
10% germination in 63 days.