Soil & potting mix
Best soil for Pygmy Sundew (Drosera scorpioides)
Also called pygmy sundew, scorpion sundew.
More about pygmy sundew
About Pygmy Sundew
Drosera scorpioides · also called pygmy sundew, scorpion sundew · houseplant
Drosera scorpioides is a tiny Western Australian pygmy sundew forming a stalked rosette of dew-tipped tentacled leaves that glisten and catch small insects. It thrives in bright light, pure water, and lean acidic soil, and is famous for propagating from gemmae, tiny clonal buds it produces in cooler months. Compact and rewarding, it is pet-safe.
Preferred mix: Lean, sandy acidic carnivorous mix
Watch for — Rot in still, wet conditions: Permanently flooded soil with poor airflow rots the small rosettes. Keep the soil moist, not saturated, and ensure good air movement.
Why pygmy sundew needs this mix
Pygmy Sundew is an easy-going houseplant — it just wants a free-draining general mix that holds some moisture but never stays soggy.
- Pygmy Sundew is adaptable, but like most houseplants it still needs air at the roots — a mix that drains freely while holding a working moisture reserve.
- A little perlite or bark stops ordinary compost compacting into an airless block over time, which is the slow, common cause of decline.
- It is not fussy about pH or special ingredients; getting the air-to-moisture balance right is what matters.
For the full picture on what makes up a good mix, see our guide to the main types of soil and potting media — it explains why each ingredient above behaves the way it does.
What goes wrong with the wrong mix
The wrong soil is one of the most common reasons pygmy sundew struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates pygmy sundew's roots.
- A pure peat mix that dries to a hard, water-repelling block is hard to re-wet and stresses the plant.
- No drainage hole turns even a good mix into a stagnant, root-rotting sump.
Reusing tired, compacted old compost or skipping the perlite. A free-draining mix in a pot with a hole solves most "why is it struggling" cases for pygmy sundew.
pH — does it matter for pygmy sundew?
Pygmy Sundew is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
If you want to check or adjust it, the soil pH guide walks through testing and the safe ways to nudge a mix more acidic or more alkaline.
DIY mix vs a bagged one
A decent bagged houseplant compost works for pygmy sundew as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Drainage and the pot
A pot with a drainage hole and a saucer you empty after watering is all pygmy sundew needs — the free-draining mix does the rest.
Refresh pygmy sundew's mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. When the time comes, our repotting guide for pygmy sundew covers the timing and technique step by step.
Pygmy Sundew soil — frequently asked questions
What is the best soil mix for pygmy sundew?
3 parts peat-free houseplant compost : 1 part perlite : 1 part orchid bark or coco chips (optional). Pygmy Sundew is adaptable, but like most houseplants it still needs air at the roots — a mix that drains freely while holding a working moisture reserve.
Can I use normal potting soil for pygmy sundew?
Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates pygmy sundew's roots. A decent bagged houseplant compost works for pygmy sundew as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
Does pygmy sundew need a special pH?
Pygmy Sundew is not fussy about pH — a slightly acidic to neutral mix (around pH 6.0-7.0), which a standard peat-free compost provides, is perfectly fine. No testing needed.
Should I buy a bagged mix or make my own for pygmy sundew?
A decent bagged houseplant compost works for pygmy sundew as long as you mix in perlite for air. The simple DIY ratio above is cheap and more reliable than a budget bag alone.
How often should I refresh the soil for pygmy sundew?
Refresh pygmy sundew's mix every 18-24 months; even good compost slumps and compacts, and fresh, airy mix is often the simplest fix for a tired plant. A pot with a drainage hole and a saucer you empty after watering is all pygmy sundew needs — the free-draining mix does the rest.
Keep reading
- Pygmy Sundew care — the full brief (light, water, humidity, problems, pet safety)
- How often to water pygmy sundew — the schedule the mix feeds into
- Repotting pygmy sundew — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Should I water my plant? The simple check first
- Overwatered plant — signs and recovery
- Root rot — how the wrong soil starts it, and how to save the plant
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