Soil & potting mix
Best soil for Old Man Palm (Coccothrinax crinita)
Also called Miraguano Palm, Thatch Palm, Cuban Old Man Palm.
More about old man palm
About Old Man Palm
Coccothrinax crinita · also called Miraguano Palm, Thatch Palm · tropical
A remarkable fan palm from western Cuba, beloved for the dense woolly fibres that cover its trunk like a shaggy coat — giving it the 'old man' appearance. Critically endangered in the wild. Slow-growing and prized by collectors. Drought- and salt-tolerant. True palms are non-toxic to pets.
Preferred mix: Sandy, fast-draining loam or cactus/palm mix
Watch for — Root rot: The primary cultural failure; ensure excellent drainage in all potting or planting situations.
Why old man palm needs this mix
Old Man Palm is a Mediterranean dry-hillside plant — it wants a lean, sharply drained, slightly alkaline mix, and rots fast in rich, water-holding soil.
- Old Man Palm evolved on stony, sun-baked slopes — its roots expect to dry out hard and quickly between rains, so the mix must drain almost as fast as you pour.
- A lean, low-nutrient mix keeps growth firm and aromatic; a rich one gives soft, sappy, flavourless growth that flops and rots.
- It tolerates and often prefers a slightly alkaline soil, the opposite of most houseplants.
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 old man palm struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:
- Rich, moisture-holding compost is the classic killer of old man palm — especially over a cold, wet winter, when the base of the plant simply rots.
- A peaty, acidic potting mix is doubly wrong: too wet and the wrong pH direction.
- No grit means the rootball stays damp for days, which a dry-climate root system never copes with.
Growing old man palm in ordinary rich, moisture-retentive compost. Lean it out with at least a third grit, and never let it sit wet over winter.
pH — does it matter for old man palm?
Old Man Palm likes neutral to slightly alkaline soil, roughly pH 6.5-7.5. If your soil or compost is acidic, a little garden lime or extra grit nudges it the right way — the one common plant where you may add lime.
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 "herb" or "Mediterranean" mixes are usually fine for old man palm, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
Drainage and the pot
Sharp drainage is everything: a terracotta pot with a big hole, gritty mix and never a saucer left full. Raised beds suit these herbs outdoors for the same reason.
A gritty mix barely breaks down, so old man palm needs little repotting — refresh the top layer and the grit every couple of years rather than potting on aggressively. When the time comes, our repotting guide for old man palm covers the timing and technique step by step.
Old Man Palm soil — frequently asked questions
What is the best soil mix for old man palm?
2 parts standard peat-free compost or loam : 1 part coarse horticultural grit : 1 part perlite or coarse sand. Old Man Palm evolved on stony, sun-baked slopes — its roots expect to dry out hard and quickly between rains, so the mix must drain almost as fast as you pour.
Can I use normal potting soil for old man palm?
Rich, moisture-holding compost is the classic killer of old man palm — especially over a cold, wet winter, when the base of the plant simply rots. Bagged "herb" or "Mediterranean" mixes are usually fine for old man palm, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
Does old man palm need a special pH?
Old Man Palm likes neutral to slightly alkaline soil, roughly pH 6.5-7.5. If your soil or compost is acidic, a little garden lime or extra grit nudges it the right way — the one common plant where you may add lime.
Should I buy a bagged mix or make my own for old man palm?
Bagged "herb" or "Mediterranean" mixes are usually fine for old man palm, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
How often should I refresh the soil for old man palm?
A gritty mix barely breaks down, so old man palm needs little repotting — refresh the top layer and the grit every couple of years rather than potting on aggressively. Sharp drainage is everything: a terracotta pot with a big hole, gritty mix and never a saucer left full. Raised beds suit these herbs outdoors for the same reason.
Keep reading
- Old Man Palm care — the full brief (light, water, humidity, problems, pet safety)
- How often to water old man palm — the schedule the mix feeds into
- Repotting old man palm — when and how to refresh the mix
- Soil pH guide — test it and adjust it safely
- Overwatered plant — signs and recovery
- Root rot — how the wrong soil starts it, and how to save the plant
- Should I water my plant? The simple check first
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- All 11687 soil and potting-mix guides in the Growli library