These flowers love the heat of summer and will reward you with their purple flowers during the whole season.
All they need is regular watering a rich organic well-balanced soil.
If plants do temporarily stop blooming, it’s a good idea to prune them back, if needed.
The key to success with this plant is the sun. If you plant them in a shady area they stop flowering and become disease prone.
The need full sun all day long.
Watch this video to learn more about these flowers.