Crassula perfoliata var.
heterothricha
is
one of a number of plant
species which are presently being tested for their
suitability to be grown as Green Roof
plants in the Durban region that have initially shown good results.
They all
occur naturally within a radius of 50 km of the Durban
city centre
Crassula perfoliata var.
heterothricha is found growing in exposed
hot rocky localities in localities with little of no soil and little
competition from other plants in
the Durban area.
Growth
habit
A small to medium
ssized branched succulent
plant with a neat growth habit.
They
reproduce naturally by
means of
vast amounts of very small seed .
Propagation
Crassula perfoliata var.
heterothricha very easily from cuttings as
well as from
seed.
Decorative
value
These
plants are being grown for their attractive
growth habit and very atractive flowers.
Drought resistance
These
plants are very drought resistant being well adapted to hot and dry
conditions.
Disease and pest resistance
unknown
in the green roof application.
Suitability as Green Roof plants
These
plants are valuable feature plants in green roof plantings that are
going to get the
very minimum
of
or no water in winter as well in combinations with other plants that do
not have a vigorous nature as they do not cope well with
competition. Green roofs with shallow low nutrient
soils provide an ideal growing environment for these very attractive
flowering plants.
Biodiversity value in the Green
Roof landscape
Unknown
Cautions and precautions in the Green Roof
application
Care
must be taken to ensure good drainage to prevent rotting
during establishment.
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