Troubleshooting
Dwarf Lewisia problems — and how to fix them
Dwarf Lewisia (Lewisia pygmaea) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Summer dormancy rot
Any moisture during summer dormancy will rot the small taproot. This is the main reason Dwarf Lewisia fails in cultivation outside its native range. Grow in an alpine house or under glass from July to September.
Very slow growth and establishment
This species grows extremely slowly, especially from seed. Plants may take 3–5 years to first bloom. Avoid disturbing established plants unnecessarily.
Slug damage in spring
The tiny emerging growth in early spring is very vulnerable to slug damage. Apply a ring of sharp grit around plants and use iron phosphate slug pellets if slugs are active.
Prevent dwarf lewisia problems before they start
Most dwarf lewisia issues are care-mismatch, not bad luck. Dial in the basics:
Dwarf Lewisia problems — FAQ
Why is my dwarf lewisia summer dormancy rot?
Any moisture during summer dormancy will rot the small taproot. This is the main reason Dwarf Lewisia fails in cultivation outside its native range. Grow in an alpine house or under glass from July to September.
Why is my dwarf lewisia very slow growth and establishment?
This species grows extremely slowly, especially from seed. Plants may take 3–5 years to first bloom. Avoid disturbing established plants unnecessarily.
Why is my dwarf lewisia slug damage in spring?
The tiny emerging growth in early spring is very vulnerable to slug damage. Apply a ring of sharp grit around plants and use iron phosphate slug pellets if slugs are active.