Soil & potting mix
Best soil for Anubias congensis (Anubias congensis)
Also called Congo Anubias, lance-leaf Anubias.
More about anubias congensis
About Anubias congensis
Anubias congensis · also called Congo Anubias, lance-leaf Anubias · tropical
Anubias congensis is a robust West and Central African aquatic aroid with elongated, slightly wavy lance-shaped leaves on a thick creeping rhizome. Larger than nana forms, it makes a striking mid-ground or background specimen attached to wood. Like all Anubias it is slow, hardy, low-light tolerant and feeds chiefly from the water column.
Preferred mix: Rhizome attached to hardscape, roots into substrate optional
Why anubias congensis needs this mix
Anubias congensis is an easy-going houseplant — it just wants a free-draining general mix that holds some moisture but never stays soggy.
- Anubias congensis 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 anubias congensis 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 anubias congensis'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 anubias congensis.
pH — does it matter for anubias congensis?
Anubias congensis 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 anubias congensis 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 anubias congensis needs — the free-draining mix does the rest.
Refresh anubias congensis'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 anubias congensis covers the timing and technique step by step.
Anubias congensis soil — frequently asked questions
What is the best soil mix for anubias congensis?
3 parts peat-free houseplant compost : 1 part perlite : 1 part orchid bark or coco chips (optional). Anubias congensis 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 anubias congensis?
Plain garden soil or a cheap, claggy compost compacts in the pot and slowly suffocates anubias congensis's roots. A decent bagged houseplant compost works for anubias congensis 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 anubias congensis need a special pH?
Anubias congensis 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 anubias congensis?
A decent bagged houseplant compost works for anubias congensis 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 anubias congensis?
Refresh anubias congensis'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 anubias congensis needs — the free-draining mix does the rest.
Keep reading
- Anubias congensis care — the full brief (light, water, humidity, problems, pet safety)
- How often to water anubias congensis — the schedule the mix feeds into
- Repotting anubias congensis — 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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