South Texas Fall Color (Not Really)

Helietta parvifolia , also known as Beretta, is a hyper-drought tolerant member of the Citrus Family (Rutaceae) that grows in rocky areas of South Texas and Northern Mexico. The leaves turn yellow when drought-stressed, but don't fall off. When the leaves turn yellow it's because as the plant is entering a state of water stress it js breaking down the chlorophyll molecules and reabsorbing the…