Edible Asian Sweet Potato (Ipomoea batatas Linn.)

Has an excellent lime-green to bright yellow green foliage, which is a great contrast plant for any garden. It is ornamental and can be used as a annual groundcover, getting only 6" tall, or also work great as hanging baskets and potted plants. 

West Indies Sea Grape (Coccoloba uvifera L)

Sea grapes has alternate, simple, circular with a heart-shaped base, leathery and persistent, 5 to 11 inches long, dark green with a red or nearly yellow mid-vein, fuzzy below. The flowers not showy, borne on a narrow stalk, 10 to 12 inches long, appearing nearly any time of year. The fruit are round or egg-shaped, each about 1 inch long, initially pale green and turning pinkish when ripe, occurring on long, hanging clusters.