Troubleshooting
Mountain Fetterbush problems — and how to fix them
Mountain Fetterbush (Pieris floribunda) 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.
Root rot on poorly drained soils
Despite being the hardiest Pieris, P. floribunda is susceptible to Phytophthora root rot on waterlogged clay soils; improve drainage at planting and mulch to prevent soil compaction.
Slow establishment and sparse flowering in deep shade
Growth is very slow even in ideal conditions, and flowering is reduced in heavy shade; accept the pace and ensure the site receives at least a few hours of direct sun per day.
Deer browsing
Despite being toxic to pets and livestock, deer will browse P. floribunda in winter when food is scarce; protect young plants with wire guards in deer-prone areas.
Prevent mountain fetterbush problems before they start
Most mountain fetterbush issues are care-mismatch, not bad luck. Dial in the basics:
Mountain Fetterbush problems — FAQ
Why is my mountain fetterbush root rot on poorly drained soils?
Despite being the hardiest Pieris, P. floribunda is susceptible to Phytophthora root rot on waterlogged clay soils; improve drainage at planting and mulch to prevent soil compaction.
Why is my mountain fetterbush slow establishment and sparse flowering in deep shade?
Growth is very slow even in ideal conditions, and flowering is reduced in heavy shade; accept the pace and ensure the site receives at least a few hours of direct sun per day.
Why is my mountain fetterbush deer browsing?
Despite being toxic to pets and livestock, deer will browse P. floribunda in winter when food is scarce; protect young plants with wire guards in deer-prone areas.