Active by day and sleeps at night perched in bushes and shrubs. Well camouflaged against predators on green branches, and transpiring leaves may reduce rate of cutaneous water loss. Moves quickly when disturbed and may open its dark-lined mouth threateningly, but rarely bites. Young 18-21 cm TL hatch in late August or September. Stalks crickets, caterpillars, grasshoppers, spiders, and other soft arthropods by moving slowly along leaves and branches.
Main predators are other snakes, birds, and mammals.
May be reduced in some areas where insecticides are applied.