All American Selections, AAS, is an independent, nonprofit organization that tests new varieties and introduces what it considers to be the best garden performers as AAS winners. AAS winners have proven themselves exceptional varieties over a broad range of growing conditions.
Missouri Botanical Gardens Plant of Merit. Plants of Merit are plants selected by the Missouri Botanical Gardens for their outstanding qualities and dependable performance for the lower Midwest. We have found these to be outstanding choices, guaranteeing you success in your garden. Plants of Merit Selection Criteria:
- Easy to grow and maintain
- Not known to be invasive in our area
- Resistant or tolerant to diseases and insects
- Has outstanding ornamental value
- Reasonably available to purchase