Troubleshooting
Giant Ixora problems — and how to fix them
Giant Ixora (Ixora macrothyrsa) 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.
Iron/manganese deficiency chlorosis
Yellowing between veins on new leaves is a hallmark of pH-induced micronutrient lockout. Test and correct soil pH to 5.0-6.0 with sulfur or acidifying fertiliser; apply chelated iron and manganese foliar spray.
Root rot from poor drainage
Giant Ixora has high water needs but cannot tolerate waterlogged soil. Roots rot rapidly in heavy clay or compacted soil. Ensure raised planting positions in garden beds and excellent drainage in containers; never leave pots sitting in saucers of water.
Spider mites in low humidity
Fine webbing on leaf undersides and stippled, bronzed foliage indicate spider mite infestation, common when air is dry. Increase humidity, spray leaves with water, and treat with insecticidal soap or neem oil.
Prevent giant ixora problems before they start
Most giant ixora issues are care-mismatch, not bad luck. Dial in the basics:
Looking for giant ixora in general rather than its problems? Read the full giant ixora care guide — light, water, soil and feeding.
Giant Ixora problems — FAQ
Why is my giant ixora iron/manganese deficiency chlorosis?
Yellowing between veins on new leaves is a hallmark of pH-induced micronutrient lockout. Test and correct soil pH to 5.0-6.0 with sulfur or acidifying fertiliser; apply chelated iron and manganese foliar spray.
Why is my giant ixora root rot from poor drainage?
Giant Ixora has high water needs but cannot tolerate waterlogged soil. Roots rot rapidly in heavy clay or compacted soil. Ensure raised planting positions in garden beds and excellent drainage in containers; never leave pots sitting in saucers of water.
Why is my giant ixora spider mites in low humidity?
Fine webbing on leaf undersides and stippled, bronzed foliage indicate spider mite infestation, common when air is dry. Increase humidity, spray leaves with water, and treat with insecticidal soap or neem oil.