Drosera falconeri is one of the most recognisable tropical Australian sundews. Its broad, kidney-shaped blades can suggest a Venus flytrap when folded, but they capture prey with a sundew’s adhesive leaf. Its seasonal retreat and the evidence about its natural soil are equally important parts of the story.
Identity and habitat
Boaz Ng documents flat rosettes with broad petioles and greatly expanded blades, often strongly red in exposed conditions. He records the species in seasonally flooded, silty clay habitats in the Darwin region and on Bathurst Island. As the wet season ends, active leaves diminish and the plant retreats below the surface rather than forming the conspicuously woolly above-ground bud seen in many related species. Field profile
That resting strategy should not be confused with the cold-winter hibernaculum of northern temperate sundews. The environmental sequence is tropical wet and dry seasons, and its timing may not match a temperate greenhouse calendar.
Sticky capture, not a hinged snap trap
Curious Plant observes the broad blades sometimes folding after prey capture. The visual resemblance to a flytrap is therefore understandable, but it does not establish the same trapping mechanism. The tentacles and adhesive surface remain central to the sundew’s capture system. Cultivated plant observations
For identification, photograph the plant while actively growing. A reduced resting plant may hide the broad mature leaves that make it distinctive.
Does it require alkaline soil?
Claims that the species requires alkaline or calcareous soil deserve scrutiny. Ng sampled topsoil beside plants at two nearby natural sites and measured pH values of 4.88 and 5.2 using a stated water-extraction method. Those samples demonstrate acidic growing substrates at those sites. They do not map every population’s chemistry, but they contradict a blanket assertion that D. falconeri can only inhabit alkaline ground. Original soil-sampling report
Consequently, adding lime to a pot simply because an old description mentioned alkaline geology is not supported by that evidence. Bedrock, groundwater and the shallow layer occupied by roots are different things to measure.
Cultivation through active and resting phases
Curious Plant recommends strong light, warmth, low-mineral water and a moist root zone during active growth. Its growing notes describe substantial leaf reduction during rest and reduced watering at that stage. The nursery lists peat, peat-and-sand and sphagnum-based media among workable options. Grower’s cultivation guidance
Interpret that as a reported horticultural approach, not a fixed programme to impose on an actively growing plant. Check the crown and new leaves before altering water. A pot’s size, medium and ventilation affect drying, so a calendar interval alone cannot establish safe moisture.
Keep a clear label on a resting pot, and avoid repeated excavation to search for the plant. A photograph at the onset of retreat and a record of the last healthy growth make the pot easier to monitor without disturbing it.
Hybrids and propagation records
Ng reports natural hybrids with other tropical sundews where habitats bring them together. The existence of hybrids makes parentage relevant when seed is produced among mixed cultivated accessions. Field observations of associated plants
Label seed offspring separately from vegetative stock and retain both known parents. This profile does not promise a particular cutting success rate or seed treatment. Where evidence for an accession is limited, record the method and result rather than presenting an experiment as a guaranteed recipe.
The most informative success is a plant that returns to sound growth after its seasonal transition, with its identity and history intact. Leaf size and colour are attractive features, but continuity through the full cycle is the more useful horticultural record.
Nano Nursery Drosera Encyclopedia — species profile. Related core chapters: 10 and 29. Reviewed 23 September 2026. Cultivation guidance concerns established plants.
