Troubleshooting
Flanagan's Sage problems — and how to fix them
Flanagan's Sage (Salvia flanaganii) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crown rot in wet winters
Sitting in cold, waterlogged soil through a wet winter is the most common cause of death for this South African native in temperate gardens. Grow on a raised gravel bed or in containers brought under cover from late autumn.
Frost damage in exposed sites
While it tolerates light frost, prolonged hard frost can kill the crown. In USDA zone 8 or RHS H3 marginal areas, mulch heavily in autumn and site against a south- or west-facing wall for shelter.
Prevent flanagan's sage problems before they start
Most flanagan's sage issues are care-mismatch, not bad luck. Dial in the basics:
Flanagan's Sage problems — FAQ
Why is my flanagan's sage crown rot in wet winters?
Sitting in cold, waterlogged soil through a wet winter is the most common cause of death for this South African native in temperate gardens. Grow on a raised gravel bed or in containers brought under cover from late autumn.
Why is my flanagan's sage frost damage in exposed sites?
While it tolerates light frost, prolonged hard frost can kill the crown. In USDA zone 8 or RHS H3 marginal areas, mulch heavily in autumn and site against a south- or west-facing wall for shelter.