Environmental Landscape Design Specialist

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Asparagus densiflorus

Plant suitable for use on Green Roofs in the Durban Area

Asparagus densiflorus

Asparagus densiflorus
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

Asparagus densiflorus occur naturally in the greater Durban region in particular interest for use in the establishment of green roofs is the fact that they are often found growing naturally in full sun on inhospitable rocky calcite outcrops on the seashore along the Bluff and Isipingo slopes experiencing the full effects of the salt laden maritime environment. Here they are often found growing fully exposed to the elements at times in locations that are practically devoid of all soil.

Growth habit

These plants are medium to low growing evergreen clump forming that easily reproduce themselves from seed.

Decorative value
These plants are most decorative having light glossy green compound leaves and a fairly neat growth habit, they produce a profusion of small white flowers in mid to late summer, Under stress conditions they can become tatty and untidy.

Drought resistance
These plants have a very extensive root system with large fleshy grape like tubers on their root ends where they are able to store very large amounts of water. These plants are able to easily withstand very harsh and dry conditions provided that they periodically get a good rain shower to replenish their water reserves.

Asparagus densiflorus root tubers

The large masses of water storage tubers make these plants very drought resistant

Disease and pest resistance

I have not experienced diseases attacking these plants, however they are often attacked by chewing insects and leaf miners both of which appear to do no lasting damage to the health of the plant.

Suitability as Green Roof plants
Although they are fairly slow growing which has not give us enough time to evaluate them under out test conditions, due to their well know natural characteristics it is hard to believe that these plants will not make very suitable green roof plants.

Biodiversity value in the Green Roof landscape
Large numbers of pollinating insects in particular honey bees are drawn to the plants when they are in flower. Birds eat the red berries that are produced in profusion

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 KrugerNational 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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Designed, Developed & Maintained by Michael Hickman
This page was created on 10.10.09
This page was last updated on 13.09.13