Troubleshooting
Purple Glory Tree problems — and how to fix them
Purple Glory Tree (Tibouchina granulosa) 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.
Interveinal chlorosis
Yellowing between leaf veins while the veins stay green indicates iron or manganese deficiency, usually triggered by alkaline soil or compost; treat with a chelated iron (sequestrene) drench and use an acidifying fertiliser to lower pH.
Spider mites
In hot, dry indoor conditions, spider mites colonise the undersides of leaves causing stippling and fine webbing; increase humidity, wash affected foliage with water, and apply a miticide or insecticidal soap spray at weekly intervals.
Prevent purple glory tree problems before they start
Most purple glory tree issues are care-mismatch, not bad luck. Dial in the basics:
Purple Glory Tree problems — FAQ
Why is my purple glory tree interveinal chlorosis?
Yellowing between leaf veins while the veins stay green indicates iron or manganese deficiency, usually triggered by alkaline soil or compost; treat with a chelated iron (sequestrene) drench and use an acidifying fertiliser to lower pH.
Why is my purple glory tree spider mites?
In hot, dry indoor conditions, spider mites colonise the undersides of leaves causing stippling and fine webbing; increase humidity, wash affected foliage with water, and apply a miticide or insecticidal soap spray at weekly intervals.