They contain both native and non-native wildflowers. Non-native species were chosen on the basis of their versatility or ability to adapt to various conditions.
Do not fertilize wildflowers unless the soil is extremely depleted of nutrients. Fertilizers encourage weed growth and lush foliage rather than flowers.
Protect from dry freezing wind during deep freezes by covering the plant with black plastic. Uncover the plant when the deep freeze and dry freezing wind is over.