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Soil & potting mix

Best soil for Drosera capensis 'Red' (Drosera capensis 'Red')

Also called Red Cape Sundew, All-Red Cape Sundew.

More about drosera capensis 'red'

About Drosera capensis 'Red'

Drosera capensis 'Red' · also called Red Cape Sundew, All-Red Cape Sundew · houseplant

Drosera capensis 'Red' is an all-red form of the Cape sundew from South Africa, whose strap-like leaves are coated in glistening, insect-catching tentacles that flush deep burgundy in strong light. It is one of the easiest carnivorous plants: give it bright sun, permanently wet mineral-free media watered with pure water, and it thrives and self-seeds readily.

Preferred mix: Nutrient-free carnivorous mix

Why drosera capensis 'red' needs this mix

Drosera capensis 'Red' is an easy-going houseplant — it just wants a free-draining general mix that holds some moisture but never stays soggy.

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 drosera capensis 'red' struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:

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 drosera capensis 'red'.

pH — does it matter for drosera capensis 'red'?

Drosera capensis 'Red' 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 drosera capensis 'red' 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 drosera capensis 'red' needs — the free-draining mix does the rest.

Refresh drosera capensis 'red''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 drosera capensis 'red' covers the timing and technique step by step.

Drosera capensis 'Red' soil — frequently asked questions

What is the best soil mix for drosera capensis 'red'?

3 parts peat-free houseplant compost : 1 part perlite : 1 part orchid bark or coco chips (optional). Drosera capensis 'Red' 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 drosera capensis 'red'?

Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates drosera capensis 'red''s roots. A decent bagged houseplant compost works for drosera capensis 'red' 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 drosera capensis 'red' need a special pH?

Drosera capensis 'Red' 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 drosera capensis 'red'?

A decent bagged houseplant compost works for drosera capensis 'red' 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 drosera capensis 'red'?

Refresh drosera capensis 'red''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 drosera capensis 'red' needs — the free-draining mix does the rest.

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