Troubleshooting
Andean Silver-Leaf Sage problems — and how to fix them
Andean Silver-Leaf Sage (Salvia discolor) 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.
Whitefly and spider mite under glass
Overwintering plants in a conservatory or greenhouse commonly attract whitefly and two-spotted spider mite; introduce biological controls (Encarsia formosa for whitefly, Phytoseiulus persimilis for mite) or apply insecticidal soap sprays regularly.
Root rot from overwatering or cold, wet compost
The most common cause of winter loss; ensure pots have excellent drainage, reduce watering significantly from October onwards, and maintain a minimum temperature of 3–5°C (37–41°F) to keep roots healthy over winter.
Prevent andean silver-leaf sage problems before they start
Most andean silver-leaf sage issues are care-mismatch, not bad luck. Dial in the basics:
Andean Silver-Leaf Sage problems — FAQ
Why is my andean silver-leaf sage whitefly and spider mite under glass?
Overwintering plants in a conservatory or greenhouse commonly attract whitefly and two-spotted spider mite; introduce biological controls (Encarsia formosa for whitefly, Phytoseiulus persimilis for mite) or apply insecticidal soap sprays regularly.
Why is my andean silver-leaf sage root rot from overwatering or cold, wet compost?
The most common cause of winter loss; ensure pots have excellent drainage, reduce watering significantly from October onwards, and maintain a minimum temperature of 3–5°C (37–41°F) to keep roots healthy over winter.