One to growRed mandevillaAn emerald-green vine decked out in red velvet creates a stunning basket or trellis for a sunny location.Botanical name: Mandevilla splendensWhy you want it: Rich, ruby-red flowers bloom all summer in the heat. The slow-growing vine stays small and tidy, unlike most other vines. Deer seem indifferent to this particular plant and do not eat it.Flowers: Saucer-shaped flowers of velvety red show a yellow, trumpet-shaped throat.