Myths About Growing Rosemary in Scotland

“Rosemary won't survive a Scottish winter — it's a Mediterranean plant”

Rosemary is hardier than its image suggests: frost-hardy, and it survives most UK winters outdoors, with the real killers being wet roots rather than cold. A plant in well-drained soil, particularly against a south-facing wall, will survive winters that kill a rosemary in heavy wet clay.

What to do: Plant rosemary in well-drained soil in a sunny, sheltered spot. The south face of a wall or building is ideal. Improve drainage with grit rather than protecting from cold, because winter wet kills more rosemary than winter frost.

In Scotland: This matters acutely here because our winter is both cold and wet. A rosemary in heavy Central Belt clay meets both killers at once. Drainage is the difference between a decade-old bush and a dead one by February.

“You can cut rosemary back hard into old wood and it will reshoot”

Rosemary does not regenerate reliably from old, bare wood. The advice is to prune after flowering, with a specific warning that cutting into old wood may result in no regrowth. A rosemary cut back hard is a rosemary replaced.

What to do: Trim lightly after flowering, cutting back to just above a leaf joint. Do not cut into bare, leafless stems. Keep the plant compact by regular light trimming rather than waiting until it needs a hard cut.

“Rosemary does just as well in a pot as in the ground”

A pot works but brings winter risks. Container-grown rosemary needs frost protection in cold weather, as the roots are less insulated than in the ground. A pot also dries faster in summer, and rosemary dislikes both drought and waterlogging.

What to do: Use terracotta or unglazed ceramic rather than plastic, as they breathe and drain better. Move pots against a house wall in winter and wrap the pot in fleece if a hard freeze is forecast.

In Scotland: The freeze-thaw cycle of a Scottish winter is harder on container rosemary than constant cold. A pot against a south-facing wall gets the daytime sun then freezes at night, which kills roots that would have survived steady cold in the ground.

“You can grow rosemary from a packet of seed like any other herb”

Rosemary seed germinates slowly, unevenly, and the resulting plants take years to reach a usable size. Taking semi-ripe cuttings in mid-summer or layering a low branch instead is advised — plants grown from cuttings are far more reliable.

Our read Most rosemary for sale is grown from cuttings for a reason. A packet of seed is a lottery that takes months to produce anything you can recognise, and the plant you get may not be true to the parent.

What to do: Take softwood or semi-ripe cuttings in summer, or buy a named variety as a young plant. Layering a low branch into the soil is the easiest method of all: peg it down, cover the middle, and you will have a rooted plant by the following spring.

In Scotland: Cuttings taken in a Scottish summer need warmth to root, so a propagator or a windowsill indoors is more reliable than leaving them outside. The layering method works outdoors and costs nothing.

“Rosemary needs full blazing sun all day or it will die”

Rosemary grows in full sun and tolerates partial shade. A warm, sheltered spot matters more than all-day sun. In Scotland a south- or west-facing wall that gets a few hours of direct sun and reflected heat will grow rosemary successfully.

Our read The full-sun rule comes from the rosemary plant's Mediterranean origins, but in a Scottish climate the real killer is wet cold, not lack of light. A plant on a north-facing wall in damp soil dies in winter; a plant on an east-facing wall in well-drained soil survives.

What to do: Prioritise drainage and shelter over maximum sun. A south-facing wall with gritty soil will produce more rosemary than an exposed sunny spot with wet feet.

In Scotland: In Scotland the equation is different from the south of England. Our longer summer days compensate for fewer hours of direct sun, so a spot that feels part-shaded still delivers enough light to grow rosemary well.