Troubleshooting
Campsis grandiflora problems — and how to fix them
Campsis grandiflora (Campsis grandiflora) 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.
Shy flowering
Too little sun, an unsettled young plant, or excess nitrogen are the usual reasons; give full sun, a warm wall and high-potassium feed, and be patient for 2-3 years.
Winter cold damage
Less hardy than the American species; in cold gardens protect the base with mulch and grow against a sheltered wall to avoid dieback.
Needs tying in
It clings weakly, so unsupported stems flop; provide wires or trellis and tie new growth in regularly.
Sap irritation
Cut stems can cause skin itching in sensitive people; prune with gloves and wash hands afterwards.
Prevent campsis grandiflora problems before they start
Most campsis grandiflora issues are care-mismatch, not bad luck. Dial in the basics:
Looking for campsis grandiflora in general rather than its problems? Read the full campsis grandiflora care guide — light, water, soil and feeding.
Campsis grandiflora problems — FAQ
Why is my campsis grandiflora shy flowering?
Too little sun, an unsettled young plant, or excess nitrogen are the usual reasons; give full sun, a warm wall and high-potassium feed, and be patient for 2-3 years.
Why is my campsis grandiflora winter cold damage?
Less hardy than the American species; in cold gardens protect the base with mulch and grow against a sheltered wall to avoid dieback.
Why is my campsis grandiflora needs tying in?
It clings weakly, so unsupported stems flop; provide wires or trellis and tie new growth in regularly.
Why is my campsis grandiflora sap irritation?
Cut stems can cause skin itching in sensitive people; prune with gloves and wash hands afterwards.