Troubleshooting
Cape Primrose problems — and how to fix them
Cape Primrose (Streptocarpus rexii) 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.
Crown and root rot
Caused by overwatering or water pooling in the crown. Always water from below or at the soil surface, use free-draining compost, and ensure no water sits in the pot saucer for more than an hour.
Cyclamen mites and aphids
Cyclamen mites cause distorted, stunted new leaves and buds — discard heavily infested plants to prevent spread. Aphids cluster on flower stems and young growth; treat with insecticidal soap or neem oil.
Brown leaf spots and tip burn
Typically caused by cold water splashed on the hairy leaves, excess fluoride in tap water, or salt build-up from over-fertilising. Water at room temperature, flush the compost periodically, and feed at half the recommended strength.
Prevent cape primrose problems before they start
Most cape primrose issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Cape Primrose — the full care guide.
Cape Primrose problems — FAQ
Why is my cape primrose crown and root rot?
Caused by overwatering or water pooling in the crown. Always water from below or at the soil surface, use free-draining compost, and ensure no water sits in the pot saucer for more than an hour.
Why is my cape primrose cyclamen mites and aphids?
Cyclamen mites cause distorted, stunted new leaves and buds — discard heavily infested plants to prevent spread. Aphids cluster on flower stems and young growth; treat with insecticidal soap or neem oil.
Why is my cape primrose brown leaf spots and tip burn?
Typically caused by cold water splashed on the hairy leaves, excess fluoride in tap water, or salt build-up from over-fertilising. Water at room temperature, flush the compost periodically, and feed at half the recommended strength.