Troubleshooting
Vazquez's Zamia problems — and how to fix them
Vazquez's Zamia (Zamia vazquezii) 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.
Root and caudex rot
Despite preferring more moisture than most zamias, overwatering combined with inadequate drainage causes Pythium or Phytophthora rot of the underground caudex; the first sign is yellowing of the oldest fronds followed by mushy crown tissue. Repot into fresh, well-aerated mix and reduce watering immediately.
Scale insects
Soft scale and mealybugs colonise the junction of leaflets and petioles under low-light indoor conditions; infestations cause sticky honeydew, sooty mould, and frond yellowing. Treat with isopropyl alcohol on cotton swabs for accessible colonies, followed by neem oil or insecticidal soap spray repeated every 10 days for a month.
Prevent vazquez's zamia problems before they start
Most vazquez's zamia issues are care-mismatch, not bad luck. Dial in the basics:
Vazquez's Zamia problems — FAQ
Why is my vazquez's zamia root and caudex rot?
Despite preferring more moisture than most zamias, overwatering combined with inadequate drainage causes Pythium or Phytophthora rot of the underground caudex; the first sign is yellowing of the oldest fronds followed by mushy crown tissue. Repot into fresh, well-aerated mix and reduce watering immediately.
Why is my vazquez's zamia scale insects?
Soft scale and mealybugs colonise the junction of leaflets and petioles under low-light indoor conditions; infestations cause sticky honeydew, sooty mould, and frond yellowing. Treat with isopropyl alcohol on cotton swabs for accessible colonies, followed by neem oil or insecticidal soap spray repeated every 10 days for a month.