Soil & potting mix
Best soil for Borchers' Schwantesia (Schwantesia borcherdsii)
Also called Borchers' Mesemb.
More about borchers' schwantesia
About Borchers' Schwantesia
Schwantesia borcherdsii · also called Borchers' Mesemb · houseplant
Schwantesia borcherdsii is a rare South African dwarf succulent from Namaqualand, forming tight rosettes of glaucous, blue-green leaves with pronounced white teeth along the margins. It blooms with bright yellow flowers in winter. Like all Schwantesia, it is a cool-season grower requiring bright light, sharp drainage, and a dry summer dormancy. Treat as mildly toxic in the absence of specific ASPCA data.
Preferred mix: Very free-draining cactus compost with at least 40% coarse perlite or grit
Watch for — Summer overwatering: Watering during the summer dormancy causes root rot. Keep almost completely dry from late spring to early autumn.
Why borchers' schwantesia needs this mix
Borchers' Schwantesia is an easy-going houseplant — it just wants a free-draining general mix that holds some moisture but never stays soggy.
- Borchers' Schwantesia 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 borchers' schwantesia 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 borchers' schwantesia'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 borchers' schwantesia.
pH — does it matter for borchers' schwantesia?
Borchers' Schwantesia 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 borchers' schwantesia 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 borchers' schwantesia needs — the free-draining mix does the rest.
Refresh borchers' schwantesia'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 borchers' schwantesia covers the timing and technique step by step.
Borchers' Schwantesia soil — frequently asked questions
What is the best soil mix for borchers' schwantesia?
3 parts peat-free houseplant compost : 1 part perlite : 1 part orchid bark or coco chips (optional). Borchers' Schwantesia 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 borchers' schwantesia?
Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates borchers' schwantesia's roots. A decent bagged houseplant compost works for borchers' schwantesia 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 borchers' schwantesia need a special pH?
Borchers' Schwantesia 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 borchers' schwantesia?
A decent bagged houseplant compost works for borchers' schwantesia 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 borchers' schwantesia?
Refresh borchers' schwantesia'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 borchers' schwantesia needs — the free-draining mix does the rest.
Keep reading
- Borchers' Schwantesia care — the full brief (light, water, humidity, problems, pet safety)
- How often to water borchers' schwantesia — the schedule the mix feeds into
- Repotting borchers' schwantesia — 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
- Best soil for giant mondo grass
- Best soil for big blue lilyturf
- Best soil for japanese sweet flag
- All 11687 soil and potting-mix guides in the Growli library