Soil & potting mix
Best soil for Bove's Jerusalem Sage (Phlomis bovei)
Also called Bove's Jerusalem sage, Bove's phlomis, Moroccan phlomis.
More about bove's jerusalem sage
About Bove's Jerusalem Sage
Phlomis bovei · also called Bove's Jerusalem sage, Bove's phlomis · flowering
Phlomis bovei is a tall, robust, woolly-leaved shrub native to the Atlas Mountains and dry hillsides of Morocco and Algeria, where it colonises rocky slopes and scrub at low to moderate altitudes. It produces dense whorls of pink to mauve flowers in early summer on stout, felted stems that can reach considerable height, making it an architectural plant for dry Mediterranean or gravel gardens. Its North African origin means it appreciates warmth and resents prolonged cold or wet winters. Phlomis bovei is not included in the ASPCA database and is classified as mildly-toxic as a precautionary measure.
Preferred mix: Sharply drained, poor to average sandy or rocky soil
Why bove's jerusalem sage needs this mix
Bove's Jerusalem Sage is a Mediterranean dry-hillside plant — it wants a lean, sharply drained, slightly alkaline mix, and rots fast in rich, water-holding soil.
- Bove's Jerusalem Sage 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 bove's jerusalem sage 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 bove's jerusalem sage — 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 bove's jerusalem sage 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 bove's jerusalem sage?
Bove's Jerusalem Sage 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 bove's jerusalem sage, 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 bove's jerusalem sage 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 bove's jerusalem sage covers the timing and technique step by step.
Bove's Jerusalem Sage soil — frequently asked questions
What is the best soil mix for bove's jerusalem sage?
2 parts standard peat-free compost or loam : 1 part coarse horticultural grit : 1 part perlite or coarse sand. Bove's Jerusalem Sage 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 bove's jerusalem sage?
Rich, moisture-holding compost is the classic killer of bove's jerusalem sage — especially over a cold, wet winter, when the base of the plant simply rots. Bagged "herb" or "Mediterranean" mixes are usually fine for bove's jerusalem sage, but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.
Does bove's jerusalem sage need a special pH?
Bove's Jerusalem Sage 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 bove's jerusalem sage?
Bagged "herb" or "Mediterranean" mixes are usually fine for bove's jerusalem sage, 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 bove's jerusalem sage?
A gritty mix barely breaks down, so bove's jerusalem sage 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
- Bove's Jerusalem Sage care — the full brief (light, water, humidity, problems, pet safety)
- How often to water bove's jerusalem sage — the schedule the mix feeds into
- Repotting bove's jerusalem sage — 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
- Best soil for common milkweed
- Best soil for spider milkweed
- Best soil for green milkweed
- All 10153 soil and potting-mix guides in the Growli library