Allamanda Bush
The Allamanda Bush is also called Yellow Bell, Golden Trumpet, or Buttercup Flower. This woody, evergreen shrub has pointed leathery leaves and large, bright flowers that bloom year-round. The shrub grows vigorously to 6 feet or greater and prefers open sunny areas and moderate temperatures.
Allamanda is probably one of the most easy-to-grow shrubs, with bright green foliage and abundant yellow flowers.
These shrubs are moderate growers that like full to partial sun and do best in Zone 10.