This is a large genus of plants. About sixteen hundred species
of Euphorbia are found around the
world. They range from small, soft-stemmed plants to trees. Some of the
southern African species grow in dry environments and look very much like
cacti. Poinsettia is native to dry areas of Mexico. It is commonly cultivated
as a potted plant for Christmas. The poinsettia “flower” is composed of a
cluster of small yellow flowers in the middle of large, red, leaf-like
structures called bracts. Modern selections may be white, pink, red, yellowish,
and a combination of these colors.
See plants at prominent sites and in offices during the winter holiday season.
Herbaceous plant up to ten feet tall.
Light: full sun
Water: responds to irrigation provided it is never soggy, drought tolerant
Soil: well-drained soil, no additional special requirements
Planted in the ground, the poinsettia can reach ten feet in
height. It may be pruned until mid-August to control its height. It grows best in
a sunny, well-drained location. In north Florida,
it needs a site protected from the hard frosts and freezes for flowers to
develop. Plants will not flower if they are exposed to artificial lights at
night or pruned later than the end of September.
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