Troubleshooting
Buddleja alternifolia problems — and how to fix them
Buddleja alternifolia (Buddleja alternifolia) 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.
Pruning at the wrong time
It flowers on old wood; cutting it back in spring removes the coming flowers. Prune immediately after flowering in early summer instead.
Loss of weeping form
Hard or careless pruning ruins the fountain habit. Thin out old flowered stems lightly rather than shearing.
Root rot in wet soil
Heavy, waterlogged ground rots roots. Plant in free-draining, sunny sites and avoid low, damp spots.
Sparse bloom in shade
Too little sun cuts flowering and weakens the arching display. Site in full sun.
Prevent buddleja alternifolia problems before they start
Most buddleja alternifolia issues are care-mismatch, not bad luck. Dial in the basics:
Looking for buddleja alternifolia in general rather than its problems? Read the full buddleja alternifolia care guide — light, water, soil and feeding.
Buddleja alternifolia problems — FAQ
Why is my buddleja alternifolia pruning at the wrong time?
It flowers on old wood; cutting it back in spring removes the coming flowers. Prune immediately after flowering in early summer instead.
Why is my buddleja alternifolia loss of weeping form?
Hard or careless pruning ruins the fountain habit. Thin out old flowered stems lightly rather than shearing.
Why is my buddleja alternifolia root rot in wet soil?
Heavy, waterlogged ground rots roots. Plant in free-draining, sunny sites and avoid low, damp spots.
Why is my buddleja alternifolia sparse bloom in shade?
Too little sun cuts flowering and weakens the arching display. Site in full sun.