It's true that Impatiens walleriana--not wallerana--is a perennial, but there are many perennial species, including I. hawkeri, New Guinea Impatiens, which are commonly used in hybridization to obtain sun-tolerant varieties. Reply
It's true that Impatiens walleriana--not wallerana--is a perennial, but there are many perennial species, including I. hawkeri, New Guinea Impatiens, which are commonly used in hybridization to obtain sun-tolerant varieties.