Soft, fleshy stemmed plants that are mostly annuals but some will last over for two to three years. They grow quickly and form a rounded mound with oval, frseh green leaves and brightly coloured flowers on the outside - all being light seekers - though not liking full sun. They are marignally frost hardy and extremely easy to grow to the point of becoming invasive if you let them. Great under trees - good for filling shady hollows.