Iris willmottiana
Genus Iris
Protocol
DerivedN. C. Deno, 1993Difficulty Moderate Rated by us, not by the source.
- 1
Sow outdoors and leave it
Sown outdoors in March; up in April.
No stated waiting before sowing. Germination time not stated; 21 days assumed.
33% germination.
This source doesn't state how long.