Ask a Question forum→Mold? on pothos ivy plant

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May 18, 2018 10:33 AM CST
I want to know what this cruddy stuff is on the top of the soil and underneath the pot. Is it mold? Something in the water? I heard that ivy plants should be kept lightly moist rather than letting the soil dry completely, is that correct? Is this plant damaged?
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Name: Sue Taylor
Northumberland, UK
Charter ATP Member Bulbs Bookworm Amaryllis Houseplants Annuals
Garden Photography Lover of wildlife (Black bear badge) Foliage Fan Bee Lover Region: United Kingdom I was one of the first 300 contributors to the plant database!
May 18, 2018 10:38 AM CST
It's fairly common and most likely a build up of salts in the compost. I wouldn't worry about it. When was the plant last repotted?
May 18, 2018 10:51 AM CST
Thanks for your reply. I bought it a little over a year ago and have never repotted it.
Name: Will Creed
Prof. plant consultant & educator
May 18, 2018 1:19 PM CST
The white material on the soil surface appears to be bits of perlite and are not a problem. The white crusty material around the drain holes are mineral deposits that have drained from the soil. That is also normal.

If your tap water is hard, that will lead to a build-up of mineral salts in the soil. In that case, use filtered or distilled water instead. Also, fertilize very rarely if at all.

Your Pothos looks healthy and dosesn't require any significant changes in its care. You might want to consider pruning -back some of the longer stems. That will keep it more under control and also prevent older leaf loss as it ages.
Will Creed
Horticultural Help, NYC
Contact me directly at [email protected]
I now have a book available on indoor plant care

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