The best water for air plants is rainwater, then distilled water, then treated tap water. Rain and distilled water contain no harsh chemicals at all. Tap water works fine if you treat it first to remove chlorine and other additives from your local water supply.
I noticed a clear difference when I switched from untreated tap water to rainwater. The brown tips on my Ionanthas stopped showing up within a few weeks. Rainwater for Tillandsia gives the best results because it matches what these plants get in nature.
Air plant water quality matters because trichomes on your leaves react to chemicals. Chlorine and fluoride in city water can hurt these tiny structures over time. Cornell Extension notes that air plants may react to chlorine in tap water. You will see brown spots and crispy leaf edges if your water is too harsh.
You can collect rainwater from your roof or balcony into clean buckets or jars. Store it in a covered jar away from direct sun to keep it fresh. Use it within a week or two before algae grows in there. This free water source works better than any store-bought option for your plants.
Distilled water offers a good backup when rain is scarce in your area. The distilling process takes out all minerals and chemicals from the source. You can buy it cheap at most grocery stores in your town. Some growers use it for all their plants to avoid any risk from tap water chemicals.
Tap water air plants can thrive if you treat the water before use on them. Let tap water sit in an open container for 24 hours before you soak your plants. This resting time lets chlorine gas escape into the air around it. The water becomes much safer for your plants after this simple step.
You can also use a water filter to remove chlorine from your tap water at home. Pitcher filters and faucet units both work well for this job. The filtered water comes out ready to use right away without any wait time needed.
Match your water choice to your specific plants and their needs. Hardy types like Ionantha handle treated tap water just fine in most cases. Fuzzy xeric types may do better with rain or distilled water for their soaks. Their leaf surface gets more exposed to whatever you soak them in during your weekly care routine.
Read the full article: 7 Essential Steps for Air Plant Pups Care
