Name: Will Creed NYC Prof. plant consultant & educator
In most cases, potting soil gets hard when it gets too dry, much like a sponge gets hard and a bit water-resistant when it is very dry. If you keep the spill appropriately moist, it shouldn't happen.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care
