Drosera hamiltonii combines a compact rosette with a substantial root system and distinctive flowers. Its association with south-coast wetlands makes it particularly interesting to growers of Australian carnivorous plants, but sharing a habitat with another species does not make every detail of their pot culture interchangeable.
Leaves that unroll and flowers with fused styles
Boaz Ng describes rosettes around 5 cm across, with elongated, rounded leaves that lie flat and roll outward as they develop. Plants may be green or olive with red tentacles, becoming more strongly coloured in exposed positions. The pink flowers have styles joined into a tube, a notable identifying feature. Fierce Flora species observations
A short sequence of photographs showing a new leaf opening can therefore be more useful than one photograph of mature colour. If the plant flowers, document the flower centre as well as its petals. Do not detach flowers unnecessarily just to obtain an identification image.
Habitat and seasonal behaviour
The species is endemic to Western Australia’s southern coast. Ng records seepage slopes around swamp margins, often with Cephalotus, and notes that plants are especially visible after fire removes surrounding vegetation. He does not describe a compulsory seasonal dormancy; dense vegetation can suppress visible growth between fires. Habitat observations
That is a useful distinction for cultivation. An empty-looking patch in a habitat photograph, or a slowdown in a pot, is not by itself evidence that this species requires a deliberate dry summer rest. Assess the plant and its recent conditions before copying the routine used for nearby tuberous sundews.
Growing guidance and its limits
Carnivorous Plant Nursery reports year-round growth in consistently moist, sandy-peat conditions with good light. Its account notes that seasonal changes in light and temperature can help flowering, and that seed is not produced readily in cultivation. Those observations support a bright, moist perennial routine rather than an annual seed-only strategy. Nursery cultivation account
Use low-mineral irrigation and the general substrate principles explained in the series’ cultivation chapters. Acclimatise a plant when increasing light, and check the pot temperature as well as the air temperature. A small dark container beside hot glass can experience conditions very different from those of a natural seepage.
Give the roots room
Evo Carnivorous Plant Labs documents extensive root growth and recommends deeper pots. Its own plants produce offsets associated with that root system, including growth extending beyond slotted containers. Grower’s root-system observations
This does not mean every plant needs an oversized container immediately. Choose a container that accommodates the established root system and allows manageable moisture. When repotting, work slowly enough to identify the main crown, connected offsets and roots before separating anything.
Propagation and flowering
Carnivorous Plant Nursery reports both leaf and root cuttings, with root cuttings easier in its experience. Its supplied stock is vegetatively propagated. Evo also offers plantlets raised from root cuttings, providing a separate example of that method in use. Propagation account, root-cutting stock
Keep each division or cutting linked to its parent accession. Several propagated pots may represent a single genotype, so flowering simultaneously does not establish that they are unrelated pollination partners. Record actual capsule and seed development rather than equating a flower with successful reproduction.
Reading the whole plant
A modest rosette can conceal a well-developed root system, while a strongly coloured rosette does not alone demonstrate good health. Follow the production of fresh leaves, the condition of the crown and the response to seasonal changes. Those observations connect the plant above the soil to the perennial system supporting it below.
Nano Nursery Drosera Encyclopedia — species profile. Related core chapters: 27 and 29. Reviewed 23 September 2026. Cultivation guidance concerns established plants; recently deflasked plants need separate acclimatisation.
