black calla

Question

Why does water drip from the tips of the leaves? The drops seem to come from nowhere.

Answer 1

This is called Guttation.
The excess water is being pushed out of the plant. It's a normal process.
Here are some links with more information.

https://www.gardeningknowhow.com/houseplants/hpgen/guttation-in-plants.htm
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/growing-calla-lilies-and-care-of-calla-lilies.htm