A nest of damp sphagnum moss covering the roots will help maintain moisture. Mist every day or two. I think what you might be seeing is the red velvet ant or cow killer ant. This is actually a wasp and is about three-fourths of an inch long. Wingless females are covered in dense hair.
Males have wings.
The name cow killer comes from the painful sting. These move about in summer, I'm told. It seems that the plant known as bleeding heart and that known as bleeding heart in other parts of the country are different. The bleeding heart more frequently grown here is Clerodendrum thomsoniae, the vine we discussed in a recent column. C. thomsoniae twines to about 15 feet when grown up a fence.