Soil & potting mix
Best soil for Camphor Catmint (Nepeta camphorata)
Also called Camphor Catmint, Camphor-Scented Catmint.
More about camphor catmint
About Camphor Catmint
Nepeta camphorata · also called Camphor Catmint, Camphor-Scented Catmint · herb
Camphor Catmint is a strongly aromatic Mediterranean perennial with square stems, grey-green leaves, and small white flowers marked with purple dots. Its distinctive camphor-heavy scent differs from typical catmints. Hardy and drought-tolerant once established, it suits dry herb gardens, gravel plantings, and rock garden edges where drainage is good and sun is plentiful.
Preferred mix: Well-drained, moderately fertile loam or sandy soil
Watch for — Flopping stems: In rich soil or partial shade, stems become lax and flop outward. Grow in lean soil and full sun. Use a ring support for taller clumps, or cut back by half in late spring (Chelsea chop) to promote sturdier regrowth.
Why camphor catmint needs this mix
Camphor Catmint is a Mediterranean dry-hillside plant — it wants a lean, sharply drained, slightly alkaline mix, and rots fast in rich, water-holding soil.
- Camphor Catmint 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 camphor catmint 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 camphor catmint — 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 camphor catmint 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 camphor catmint?
Camphor Catmint 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 camphor catmint, 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 camphor catmint 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 camphor catmint covers the timing and technique step by step.
Camphor Catmint soil — frequently asked questions
What is the best soil mix for camphor catmint?
2 parts standard peat-free compost or loam : 1 part coarse horticultural grit : 1 part perlite or coarse sand. Camphor Catmint 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 camphor catmint?
Rich, moisture-holding compost is the classic killer of camphor catmint — especially over a cold, wet winter, when the base of the plant simply rots. Bagged "herb" or "Mediterranean" mixes are usually fine for camphor catmint, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
Does camphor catmint need a special pH?
Camphor Catmint 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 camphor catmint?
Bagged "herb" or "Mediterranean" mixes are usually fine for camphor catmint, 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 camphor catmint?
A gritty mix barely breaks down, so camphor catmint 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
- Camphor Catmint care — the full brief (light, water, humidity, problems, pet safety)
- How often to water camphor catmint — the schedule the mix feeds into
- Repotting camphor catmint — 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 8452 soil and potting-mix guides in the Growli library