Soil & potting mix
Best soil for Tenerife Lavender (Lavandula buchii)
Also called Tenerife lavender, Jagged lavender, Canary Island lavender.
More about tenerife lavender
About Tenerife Lavender
Lavandula buchii · also called Tenerife lavender, Jagged lavender · herb
Tenerife lavender is an evergreen woody subshrub endemic to the island of Tenerife in the Canary Islands, where it grows on dry, volcanic, rocky slopes and in open scrub. Its deeply pinnate or bipinnate, fern-like grey-green leaves give it a uniquely lacy appearance quite distinct from other lavenders, and it produces tall, branching stems of pale violet-blue flowers over a long season, often near-continuously in mild climates. Being native to a warm subtropical island, it is one of the least frost-hardy lavenders and requires a frost-free or near-frost-free environment to overwinter successfully outdoors in most temperate gardens. According to the ASPCA, lavender (Lavandula) is toxic to cats, dogs, and horses.
Preferred mix: Sharply drained, sandy or gritty, low-fertility
Watch for — Root rot (from overwatering or winter wet): Sitting in moist or waterlogged soil — especially in cool temperatures — rapidly induces root and crown rot. This is the most common cause of plant failure; ensure perfect drainage and drastically reduce watering from October to March.
Why tenerife lavender needs this mix
Tenerife Lavender is a Mediterranean dry-hillside plant — it wants a lean, sharply drained, slightly alkaline mix, and rots fast in rich, water-holding soil.
- Tenerife Lavender 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 tenerife lavender 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 tenerife lavender — 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 tenerife lavender 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 tenerife lavender?
Tenerife Lavender 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 tenerife lavender, 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 tenerife lavender 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 tenerife lavender covers the timing and technique step by step.
Tenerife Lavender soil — frequently asked questions
What is the best soil mix for tenerife lavender?
2 parts standard peat-free compost or loam : 1 part coarse horticultural grit : 1 part perlite or coarse sand. Tenerife Lavender 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 tenerife lavender?
Rich, moisture-holding compost is the classic killer of tenerife lavender — especially over a cold, wet winter, when the base of the plant simply rots. Bagged "herb" or "Mediterranean" mixes are usually fine for tenerife lavender, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
Does tenerife lavender need a special pH?
Tenerife Lavender 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 tenerife lavender?
Bagged "herb" or "Mediterranean" mixes are usually fine for tenerife lavender, 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 tenerife lavender?
A gritty mix barely breaks down, so tenerife lavender 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
- Tenerife Lavender care — the full brief (light, water, humidity, problems, pet safety)
- How often to water tenerife lavender — the schedule the mix feeds into
- Repotting tenerife lavender — 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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