About twelve species of Allamanda
are native to Central and South America. They
are shrubs and vines. As the common name indicates, this species is a shrub.
Leaves are held in pairs or three’s. Bright yellow, trumpet-shaped flowers are
about two inches across. Seed pods are covered in coarse hairs that become
needle-like as they dry and turn brown.
See this plant on the south side of building 15.
Medium-sized shrub to four feet tall or more.
Water: well-drained soil, somewhat drought tolerant
Soil: adaptable to soil types, no other special requirements
This plant is not widely grown in Jacksonville. It may be at its northern limit
here. Most references state that it is winter hardy only in the lower peninsula
and similar climates. Last winter, plants in Jacksonville remained evergreen despite a low
temperature in the mid-20’s F. As a result of lower temperatures, they can die
to the ground and recover in spring.
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