Troubleshooting
Big Red Sage problems — and how to fix them
Big Red Sage (Salvia penstemonoides) 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.
Winter cold damage in marginal zones
Not reliably winter-hardy in Zone 6 without protection; apply a deep mulch of leaves or pine needles over the crown in late autumn and site plants in a sheltered south-facing position.
Deer browsing
Despite being deer-resistant in many trials, plants can be browsed in gardens with high deer pressure, particularly in spring when new basal foliage is tender; temporary protective fencing or deer repellent spray may be needed in the first season.
Prevent big red sage problems before they start
Most big red sage issues are care-mismatch, not bad luck. Dial in the basics:
Big Red Sage problems — FAQ
Why is my big red sage winter cold damage in marginal zones?
Not reliably winter-hardy in Zone 6 without protection; apply a deep mulch of leaves or pine needles over the crown in late autumn and site plants in a sheltered south-facing position.
Why is my big red sage deer browsing?
Despite being deer-resistant in many trials, plants can be browsed in gardens with high deer pressure, particularly in spring when new basal foliage is tender; temporary protective fencing or deer repellent spray may be needed in the first season.