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Why Are My Zanzibar Gem's Leaves Yellowing?
Zanzibar Gems are loved for their fabulous, textural foliage, and those deep emerald leaves are their most beloved feature. So it's understandable to feel concern at the first sign of yellowing. Luckily, yellowing foliage on a ZZ Plant is usually an easy fix. Here are the common causes and solutions for yellowing leaves on your Zanzibar Gem.
At Léon & George, our master gardeners have spent nearly a decade growing premium plants and helping thousands of plant parents nationwide, so the guidance here comes straight from hands-on experience.
Normal Leaf Shedding
It's normal for Zanzibar Gems to shed older leaves from time to time. If you notice just a small number of yellow leaves on an otherwise healthy plant, you can simply pluck them off or trim them as close to the stalk as possible with clean, sharp scissors. This is routine plant behavior, not a cause for alarm.
Overwatering
If you see more than a few yellowing leaves, inspect your ZZ for signs of overwatering: soft, mushy stalks and waterlogged, very wet soil. If you find these, remove the plant (still in its nursery pot) from its ceramic planter, pour out any pooled water, and keep it out of the planter until the soil dries entirely. Remove any dead yellow leaves and mushy stalks or roots at this time. It may take a few weeks to a month for the soil to dry, and your plant won't need water during that period.
Preventing Yellow Leaves
Because ZZ Plants store water in their roots, overwatering is the main risk. Water only when the top two inches of soil are completely dry, make sure the pot drains well, and your Zanzibar Gem will reward you with healthy, deep-green foliage.
Frequently Asked Questions
Why is my ZZ Plant turning yellow?
A few yellow leaves usually means natural shedding, which is normal. Widespread yellowing with soft, mushy stalks and wet soil indicates overwatering, the most common serious cause.
How do I fix an overwatered ZZ Plant?
Remove it from the decorative pot, pour out standing water, and let the soil dry completely (which can take weeks). Trim any mushy stalks or roots, and repot in fresh, well-draining soil if the rot is significant.
How often should I water a Zanzibar Gem?
Only when the top two inches of soil are fully dry, often every two to three weeks or longer. ZZ Plants are drought-tolerant and far more likely to suffer from overwatering than underwatering.
Should I remove yellow ZZ leaves?
Yes. Pluck or trim yellow leaves close to the stalk with clean scissors. A yellow leaf won't recover, and removing it lets the plant focus on healthy growth.