Silwerboomkloof Natural Heritage Site is a small, protected valley (“kloof”), near the Helderberg Nature Reserve, in Somerset West, South Africa. ^[1]

The name Silwerboomkloof means “Valley of the Silvertrees”. The rare Silvertree (Leucadendron argenteum) is a striking, silver-coloured tree of the Protea family, and this reserve conserves a forest of them. The iconic Silvertree is actually indigenous to the eastern slopes of Table Mountain, making the population at Silwerboomkloof a bit of an isolated anomaly. This 4.9-hectare (12-acre) reserve encloses a section of “Granite Fynbos” and “Renosterveld” and a total of around 220 species of plant have been recorded. ^{[2] [3]}

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  The shiny silver foliage of the rare "Silvertree" protea.
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  A Silvertree growing on the slopes of Silwerboomkloof.

• Biodiversity of Cape Town – Diversity of the natural environment of Cape Town
• List of nature reserves in Cape Town
• Helderberg Nature Reserve – Nature reserve in Cape Town, South Africa
• Silverleaf Tree – Species of tree
• Boland Granite Fynbos – Vegetation type endemic to the Western Cape, South Africa
• Renosterveld – Vegetation type and plant community of the Cape Floristic Region