Flora in focus: Julimar’s sticky secret – the sundew

Written by Sharon Richards, JCAFA
Original Article: November 2025 edition of the Toodyay Herald.

When enjoying a bush walk in the Julimar Forest this spring with Armadale Wildflower group members, we were fortunate enough to have a WA Drosera enthusiast/expert with us. Thilo Krueger, identified a number of Drosera, with a final count for the day reaching 16 different species!  Previously there had had only been 4 species listed as being recorded in Julimar State Forest.

So, what is a Drosera? Often also known as Sundews, they are one of the largest genera of carnivorous plants, with at least 194 species. Western Australia is a world hotspot for Drosera with over 120 species occurring in South West WA and an additional 20 in the northern part of the state.

You may be familiar with a commonly seen carnivorous plant, the Venus Flytrap, which snaps shut when an insect lands on its leaves.  Drosera are similar, but different.

Drosera have a very sticky, glue-like substance on tiny tentacles on their leaves.  Insects are fatally attracted by the sweet secretions and as soon as they touch down their feet are stuck fast, with little hope of getting away. 

A Leafy Sundew, Drosera stolonifera

A Leafy Sundew, Drosera stolonifera.

A Drosera spilos

Drosera spilos.

The plant then proceeds to digest its prey secreting enzymes which break it down, it can then absorb the nutrient rich substance through its leaves. The caught insects provide a nutritional supplement for the Drosera which grow in our often poor quality soil.

Drosera are generally a smaller plant, with many of the Pygmy Drosera only reaching 20 mm tall.  They can grow almost flat to the ground in a rosette shape, with broad leaves in shades of green, shaded with hints of reds and orange.  Others have a tiny base with thin, long tendrils of stems reaching 20 – 30 cms long, covered with what look like tiny upturned basins, which have beautiful, sticky, insect-attracting tentacles.

The flowers can vary from plain white to a multitude of vibrant shades of pinks and oranges.  It is these vibrant flowers that will attract your attention and invite you to examine the plant further.  The leaves appear to glisten; this is the effect of the sticky tentacles, which will often prove fatally irresistible to its unsuspecting prey.

Next time you are out in Julimar State Forest, take time to look at the small stuff, you never know, you could find a flesh-eating plant!

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