Soil & potting mix
Best soil for Fishbone Cactus (Epiphyllum anguliger)
Also called Zigzag Cactus, Ric Rac Cactus.
More about fishbone cactus
About Fishbone Cactus
Epiphyllum anguliger · also called Zigzag Cactus, Ric Rac Cactus · houseplant
The fishbone cactus is a Mexican epiphyte grown for its deeply zigzagged, flat green stems that trail like a fish skeleton. Easy and forgiving, it thrives in bright indirect light, an airy fast-draining mix, and moderate watering, rewarding a cool dry winter with fragrant night-opening flowers. A spineless jungle cactus and ASPCA-listed non-toxic to pets.
Preferred mix: Loose, airy epiphytic mix
Watch for — Root rot / limp stems: Overwatering or heavy soil rots roots and the stems go soft and yellow. Repot into airy mix and water only when the surface dries.
Why fishbone cactus needs this mix
Fishbone Cactus drinks mostly through its central cup, not its roots — so it wants a light, open, fast-draining bark mix and only a shallow pot.
- Fishbone Cactus is an epiphyte: its small root system mainly clings on, while the rosette "tank" does the drinking — so the mix only needs to anchor it and breathe.
- An open bark mix lets the few roots get air and dries fast, mimicking the tree-fork or rock crevice it grows in naturally.
- Because the cup feeds it, a soggy root zone gives no benefit and only invites base rot.
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 fishbone cactus struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Dense, water-holding compost rots fishbone cactus at the base where the leaves meet the soil — the rosette can look fine while the crown is already failing.
- A deep pot full of mix stays wet in the middle long after the surface dries; bromeliad roots are too shallow to ever use it.
- Garden topsoil compacts and starves the few roots of air.
Potting fishbone cactus deep in ordinary compost as if the roots do the feeding. Use a shallow pot of open bark mix and keep the soil only barely moist.
pH — does it matter for fishbone cactus?
Fishbone Cactus likes a slightly acidic mix (around pH 5.0-6.0), which a bark-based blend gives naturally. Cup-water quality matters more than soil pH — use rain or filtered water.
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 bagged epiphytic or orchid mix works well for fishbone cactus with a little extra perlite. The DIY ratio above is easy and cheap if you already keep orchids.
Drainage and the pot
A shallow, well-drained pot is ideal — the rootball should never sit in water. Keep the central cup topped up instead; that is how the plant actually drinks.
Fishbone Cactus rarely needs repotting — it flowers once then produces pups. Move pups to fresh bark mix; bark breakdown is slow enough that the parent rarely needs it. When the time comes, our repotting guide for fishbone cactus covers the timing and technique step by step.
Fishbone Cactus soil — frequently asked questions
What is the best soil mix for fishbone cactus?
2 parts orchid bark or coarse epiphytic mix : 1 part perlite : 1 part peat-free compost. Fishbone Cactus is an epiphyte: its small root system mainly clings on, while the rosette "tank" does the drinking — so the mix only needs to anchor it and breathe.
Can I use normal potting soil for fishbone cactus?
Dense, water-holding compost rots fishbone cactus at the base where the leaves meet the soil — the rosette can look fine while the crown is already failing. A bagged epiphytic or orchid mix works well for fishbone cactus with a little extra perlite. The DIY ratio above is easy and cheap if you already keep orchids.
Does fishbone cactus need a special pH?
Fishbone Cactus likes a slightly acidic mix (around pH 5.0-6.0), which a bark-based blend gives naturally. Cup-water quality matters more than soil pH — use rain or filtered water.
Should I buy a bagged mix or make my own for fishbone cactus?
A bagged epiphytic or orchid mix works well for fishbone cactus with a little extra perlite. The DIY ratio above is easy and cheap if you already keep orchids.
How often should I refresh the soil for fishbone cactus?
Fishbone Cactus rarely needs repotting — it flowers once then produces pups. Move pups to fresh bark mix; bark breakdown is slow enough that the parent rarely needs it. A shallow, well-drained pot is ideal — the rootball should never sit in water. Keep the central cup topped up instead; that is how the plant actually drinks.
Keep reading
- Fishbone Cactus care — the full brief (light, water, humidity, problems, pet safety)
- How often to water fishbone cactus — the schedule the mix feeds into
- Repotting fishbone cactus — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Root rot — how the wrong soil starts it, and how to save the plant
- Overwatered plant — signs and recovery
- Why is my plant wilting? Wet vs dry diagnosis
- Best soil for snake plant
- Best soil for dracaena
- Best soil for peperomia
- All 1284 soil and potting-mix guides in the Growli library