Troubleshooting
Black Sage problems — and how to fix them
Black Sage (Salvia mellifera) 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.
Root rot from summer water
The most common cultivation failure; even a single deep watering in summer heat can trigger Phytophthora crown rot — site carefully and resist the urge to irrigate.
Spittlebug (froghopper)
Meadow spittlebugs (Philaenus spumarius) feed on stems in spring, leaving white foam; typically cosmetic only — hose off the foam and tolerate the feeding at low infestation levels.
Prevent black sage problems before they start
Most black sage issues are care-mismatch, not bad luck. Dial in the basics:
Black Sage problems — FAQ
Why is my black sage root rot from summer water?
The most common cultivation failure; even a single deep watering in summer heat can trigger Phytophthora crown rot — site carefully and resist the urge to irrigate.
Why is my black sage spittlebug (froghopper)?
Meadow spittlebugs (Philaenus spumarius) feed on stems in spring, leaving white foam; typically cosmetic only — hose off the foam and tolerate the feeding at low infestation levels.