Troubleshooting
Sweet Clockvine problems — and how to fix them
Sweet Clockvine (Thunbergia fragrans) 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.
Spider mites in dry weather
Hot, dry conditions favour spider mite outbreaks; look for pale stippled leaves and fine webbing on undersides. Increase irrigation frequency, mist the undersides of leaves, and apply neem oil or insecticidal soap.
Sluggish or no flowering in shade
Insufficient sun is the most common reason for poor flowering. Move to a sunnier position with a minimum of 4–5 hours of direct light. Shade-grown plants revert to foliage growth at the expense of blooms.
Aphids on new growth
Soft shoot tips are a prime target for aphid colonies, especially in spring. Knock off with a strong water jet and follow up with insecticidal soap spray. Avoid excessive nitrogen feeding which produces the soft growth aphids prefer.
Prevent sweet clockvine problems before they start
Most sweet clockvine issues are care-mismatch, not bad luck. Dial in the basics:
Sweet Clockvine problems — FAQ
Why is my sweet clockvine spider mites in dry weather?
Hot, dry conditions favour spider mite outbreaks; look for pale stippled leaves and fine webbing on undersides. Increase irrigation frequency, mist the undersides of leaves, and apply neem oil or insecticidal soap.
Why is my sweet clockvine sluggish or no flowering in shade?
Insufficient sun is the most common reason for poor flowering. Move to a sunnier position with a minimum of 4–5 hours of direct light. Shade-grown plants revert to foliage growth at the expense of blooms.
Why is my sweet clockvine aphids on new growth?
Soft shoot tips are a prime target for aphid colonies, especially in spring. Knock off with a strong water jet and follow up with insecticidal soap spray. Avoid excessive nitrogen feeding which produces the soft growth aphids prefer.