A half-hardy annual, used as a border plant, for ribbon bedding for mass effect, or in mixed beds of geranium, coleuses and other plants.
Low perennial, poppy-like plant, grown as a hardy annual.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "hardy annual" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.