Review: Stem cells for crop improvement Plantae Appreciating Common Camas (Camassia quamash) during Native Plant Appreciation Week WNPS Blog Botanical Rambles Why do avocado plant leaves turn brown and fall off? Why is the Century Plant taking forever to bloom? Agave Americana is monocarpic, meaning it blooms only once before it fades. The plant puts all its energy into producing this spectacular bloom.