Why your cast iron plant has brown tips or spots
Good news — brown tips on a cast iron plant are cosmetic more than catastrophic. They usually mean cold drafts, spider mites in dry air, or fluoride in tap water. The plant's fine; it's telling you something in its environment is off.
Not sure? Ask Thumbs about your Cast Iron Plant brown tips & spots →
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Why are the tips of my cast iron plant turning brown?
Brown, crispy tips almost always come from cold drafts, spider mites in dry air, or fluoride in tap water. The leaf edges are the first to show stress because they're the farthest from the roots.
Should I cut the brown tips off?
You can trim the brown parts off to tidy it up — follow the natural shape of the leaf so it doesn't look hacked. But fixing the cause matters more than the trim, or new tips will just brown again.
How do I stop my cast iron plant getting brown tips?
Address cold drafts, spider mites in dry air, or fluoride in tap water. Consistent watering, the right humidity, and flushing the soil occasionally to wash out built-up salts will keep the tips green.
Not sure? Ask Thumbs about your Cast Iron Plant brown tips & spots →
Thumbs talks you through it, one question at a time. Free during early access.