One my favorite vegetable is Okra, also known as lady's fingers in other countries. Okra is actually a perrenial flowering plant that has no certain parentage but some says belongs in the mallow family and is scientifically known as Abelmoschus. It bears several dark green pods that are eaten as vegetables.
These are the flowers of Okra, blooming in our front yard.
My husband chose to plant okra near the front fence to shield us from extreme heat from the sun because okra grows up to 2 meters tall. The instruction was to plant the okra with 90cm distance from each other but my husband misread it, instead he planted it with distance of 9cm. I do not know if they will still grow as high as 2 meters because to date it had grown around 2 feet tall and has started to give us pods for vegetables.
Anyway, even though they will not serve the purpose of giving us shade but at least they have given us healthy vegetables.