A natural habitat is an ecological or environmental area where a specific species lives. It is the place in nature that particular species calls home. To help picture what this means, think of a zoo.
Quick Answer. A mixture of vinegar and borax will kill most algae growing on bricks and concrete. Homeowners do not need harsh chemicals to get rid of these pesky growths.
Welcome to the forum! If the water doesn't drain out of the pot, the plant's roots will rot. No way to avoid that. The green you see on the concrete is probably algae. It should be easy to kill it with a little algacide, such as is made for fountains, birdbaths, ponds and aquariums. It works really well in my ponds and birdbaths.