The name peperomia may not roll off the tongue, but you could get lost in this wonderful genus of tropical plants: There are more than 1,000 known species, all with thick, fleshy leaves that contribute to their drought tolerance and vigor. If you haven't experienced much luck with flowering houseplants, you will appreciate that the peperomia sports foliage that is highly ornamental in its own right. Leaves may be textured or smooth; red, green, gray, or purple; variegated, marbled, or solid; large, heart-shaped, or tiny. Plants throughout the Peperomia genus may look so different from one to the next that it's difficult to discern if they are even related. But one thing all peperomia plants have in common is that they are slow-growing and low maintenance.