Soil & potting mix
Best soil for Ric Rac Cactus (Disocactus anguliger)
Also called Ric rac cactus, Fishbone cactus, Zigzag cactus, Fishbone orchid cactus, St Anthony's rik-rak.
More about ric rac cactus
About Ric Rac Cactus
Disocactus anguliger · also called Ric rac cactus, Fishbone cactus · houseplant
The ric rac cactus is an epiphytic jungle cactus from the cloud forests of Chiapas, Mexico, prized for its flat, deeply notched zigzag stems that trail like fishbones. Unlike desert cacti, its defining need is bright but indirect light with a freely draining yet moisture-retentive mix that is watered when the top few centimetres dry out.
Preferred mix: Free-draining epiphytic cactus mix
Watch for — Root rot from overwatering: The single most common killer. Soft, brown, collapsing stems and a sour-smelling mix mean the roots have rotted. Let the top few centimetres dry between waterings, use a gritty free-draining mix, and never let the pot sit in a saucer of water.
Why ric rac cactus needs this mix
Ric Rac Cactus is a desert plant — its mix should be roughly three-quarters mineral grit, behaving more like wet gravel than soil.
- Ric Rac Cactus stores its own water in its tissue, so the mix must drain in seconds and then dry hard — the plant supplies the reservoir, not the soil.
- Desert roots breathe through the same large pores that let water escape; pack them in dense compost and they suffocate before they rot.
- A gritty, low-organic mix also stays lean, which keeps growth tight and the plant true to its compact wild form.
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 ric rac cactus struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Ordinary peat-based potting compost holds many times its weight in water and stays wet for weeks — for ric rac cactus that is a slow root-rot sentence.
- Moisture-retaining "houseplant" mixes with added water crystals are the single worst choice you can make for a desert species.
- Even a "cactus" bag from a supermarket is often too peaty; it almost always needs cutting hard with extra grit or pumice.
Potting ric rac cactus in the bag straight off the shelf without adding 50% or more mineral grit. The wrong mix kills more desert plants than any watering error.
pH — does it matter for ric rac cactus?
Ric Rac Cactus is relaxed about pH — a slightly acidic to neutral mix (around 6.0-7.0) is fine. Drainage, not pH, is the variable that decides whether it lives.
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
Bagged cactus compost is a starting point, not a finished mix — cut it at least 1:1 with pumice or grit. Mixing your own from the ratio above is cheaper and far more reliable for ric rac cactus.
Drainage and the pot
A terracotta pot with a generous drainage hole is ideal — it wicks moisture out through the walls and dries the rootball from every side. Never use a pot without a hole, and never let the pot stand in a saucer of water.
A gritty mineral mix barely breaks down, so ric rac cactus only needs repotting every 3-4 years, usually just to refresh grit and move up a pot size. When the time comes, our repotting guide for ric rac cactus covers the timing and technique step by step.
Ric Rac Cactus soil — frequently asked questions
What is the best soil mix for ric rac cactus?
2 parts pumice or coarse perlite : 1 part coarse horticultural grit or coarse sand : 1 part low-peat cactus compost. Ric Rac Cactus stores its own water in its tissue, so the mix must drain in seconds and then dry hard — the plant supplies the reservoir, not the soil.
Can I use normal potting soil for ric rac cactus?
Ordinary peat-based potting compost holds many times its weight in water and stays wet for weeks — for ric rac cactus that is a slow root-rot sentence. Bagged cactus compost is a starting point, not a finished mix — cut it at least 1:1 with pumice or grit. Mixing your own from the ratio above is cheaper and far more reliable for ric rac cactus.
Does ric rac cactus need a special pH?
Ric Rac Cactus is relaxed about pH — a slightly acidic to neutral mix (around 6.0-7.0) is fine. Drainage, not pH, is the variable that decides whether it lives.
Should I buy a bagged mix or make my own for ric rac cactus?
Bagged cactus compost is a starting point, not a finished mix — cut it at least 1:1 with pumice or grit. Mixing your own from the ratio above is cheaper and far more reliable for ric rac cactus.
How often should I refresh the soil for ric rac cactus?
A gritty mineral mix barely breaks down, so ric rac cactus only needs repotting every 3-4 years, usually just to refresh grit and move up a pot size. A terracotta pot with a generous drainage hole is ideal — it wicks moisture out through the walls and dries the rootball from every side. Never use a pot without a hole, and never let the pot stand in a saucer of water.
Keep reading
- Ric Rac Cactus care — the full brief (light, water, humidity, problems, pet safety)
- How often to water ric rac cactus — the schedule the mix feeds into
- Repotting ric rac cactus — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- How often to water succulents — the soak-and-dry method
- Why is my succulent dying? The overwatering autopsy
- Root rot — how the wrong soil starts it, and how to save the plant
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- All 271 soil and potting-mix guides in the Growli library