About sixty species of Senna
are native around the world. Previously, this genus was lumped together with
the genus, Cassia. The fall-blooming
senna is native to southern South America. It
is a dramatic shrub in fall when bright yellow flowers cover it. The larvae of
sulphur butterflies feed on this and other Senna
See plants on pond ‘H’ behind building 6 and at University Center.
Large shrub to eight feet or more in height, and spreading as wide.
Light: full sun
Water: well-drained soil, tolerates drought
Soil: average garden soil
Grow this plant in a sunny site with well-drained soil.
Temperatures below the mid-twenties may kill this plant to the ground. Usually,
it will resprout from the ground in the following spring.
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