Euphorbia marginata, or Snow-On-The-Mountain, was looking pretty in August. They are showy plants that brighten up any area of the garden. Euphorbia marginata is native to the Midwest and regarded as a pest in some areas because of its tendency to spread.
Blooming starts in mid-summer and lasts two to three months. Each female flower becomes a pod containing one seed which “pops” open and flings the seed several feet. I’ve had these plants for a few years now and only have two or three plants come back each spring, so being invasive has not been a problem for me.
Warning: All parts of the plant are poisonous if ingested. Handling the plant can cause skin irritation or an allergic reaction, especially when touching the white milky sap substance. Be careful to keep it away from your eyes. I’ve not experienced any problem with it and only recently became aware of the warning.
Every spring I plant one pot of Dragon Wing Begonias and then when August arrives, I'm left to wonder why I didn't plant a dozen containers because they are so pretty, bloom continuously and tolerate heat and drought.
The Black-Eyed Susan's make me happier than almost any other flower I grow. Cheerful is the best word to describe them.