Environmental Landscape Design Specialist

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Crassula multicava

Plant suitable for use on Green Roofs in the Durban Area

Crassula multicava
Crassula multicava
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 multicava occur naturally in shallow soils in light to deep shade on rocky cliffs in the greater Durban region

Growth habit

These plants are small fast growing evergreen succulent mat-forming herbs, the stems as well as the leaves are highly succulent. They capable of rapid colonisation due to the fact that they reproduce, vegetatively, by seed and from plantlets that develop on the flower heads.

Decorative value
These plants are extremely decorative groundcover having large dark green succulent leaves and a neat growth habit. They produce large masses of small white to pink flowers over a very long period of time during winter months and early spring.

Drought resistance
In their natural habitat they are able to withstand reasonable periods of drought due to their very succulent nature. From my experience of growing these plants I have found them to be fairly drought resistant.

Disease and pest resistance
These plants are generally disease resistant, however they often in particular the flowers and flower stems become infested with mealy bug which are mostly introduced by and tended by ants. They are the larval host plants of two butterflies of the family Lycaenidae, Leptomyrina hirundo (tailed black eye) and Gonatomyrina gorgias gorgias (common black eye)

Suitability as Green Roof plants
From the results of the plants that are being tested under Green Roof conditions these plants certainly give the impression that they are going to be suitable Green Roof ground cover plants under certain conditions. They appear to be suitable to be used in mixed groundcover plantings that give them a little protection from the direct sun.

Biodiversity value in the Green Roof landscape
They are larval food plants for butterflies allowing these butterflies to become resident. When in flower they attract large numbers of pollinating insects in particular honey bees and small butterflies.

Cautions and precautions in the Green Roof application
None that I am aware of at the moment

Ecoman Durban Indigenous Landscape Design Consultant

Bio-Diverse Indigenous Landscaping I design landscapes and gardens that are Bio-Diverse as well as being pleasing to the eye

Landscapes and Gardens that are Nature Friendly

I use my many years of landscape planning and design as well as landscape construction experience coupled to my vast knowledge of the requirements of nature to create habitat suitable for birds, butterflies and other creatures to live and breed in.


I always apply the basic principles of good landscape design to create an aesthetically pleasing garden that at the same time satisfies the living requirements of the target creatures that I would like to attract. My speciality is to attract birds, butterflies and solitary bees. I design and build Bio-Diverse Roof Gardens


So let Ecoman design and create a garden for you that will be a haven for wildlife such as birds, butterflies, frogs and lizards in the number of species comparable to Kruger National Park.

For all of your Green Roof requirements contact Michael Hickman Specialist in Green Roof Technology at +27 82 061 2593 or email at info@ecoman.co.za

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This page was created on 21.09.09
This page was last updated on 21.10.13