Saving Datura from Spider Mites and Nutrient Deficiency

Mature datura plants losing leaves above 18–24 inches likely have spider mites (check for fine webbing under leaves) or are underfed. Spray cool water upward under leaves daily, then weekly. Use insecticidal soap or horticultural oil. Also, daturas are heavy feeders—apply balanced fertilizer weekly during growing season. Drought or poor drainage can also cause leaf drop.