@dufitalexis1: Rosemary is not pruned to keep...
@dufitalexis1
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Apr 26, 2026
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Rosemary is not pruned to keep it small. It is pruned to keep it alive. The bush that goes woody at the base with a tuft of green on top is not old β it has been pruned incorrectly, or not pruned at all. πΏ
The fatal rule
Rosemary will not regenerate from old wood. If you cut into the brown, woody part of a stem β below the zone of green foliage β that stem is dead. No new buds will emerge from it. It stays as a dead stump. This is why a rosemary clipped repeatedly with hedge shears becomes bald at the base within three to four years: each clipping shortens the green zone slightly further, and eventually the bare wood dominates. Once the base is fully bare and woody, the plant cannot be recovered.
Lavender behaves the same way. Sage too. But rosemary is the most unforgiving.
The correct cut
Always cut only in the green part of the stem β where foliage is visible. Cut 2-3cm above the junction with a smaller green side shoot. That side shoot becomes the new growing tip. One rule of thumb: if you can see green below the cut point, it is safe. If you see brown below the cut point, you are killing that branch.
Never use hedge shears on rosemary. They cut green and old wood indiscriminately and destroy the plant from the base up. Use secateurs, branch by branch, checking each cut is in green wood. A normal-sized rosemary bush takes ten minutes.
When to prune
The main prune is after flowering β late April to May in most of England, earlier in sheltered or south-facing positions. Wait until the flowers have finished (they are important for early pollinators when little else is out) then cut back the new season's growth by about one third, always above a green side shoot.
A second light tidy in September to shape before winter. Do not prune after October β new growth stimulated by cutting will not harden in time before the first frosts and the soft tips will die back in cold weather.
Never prune in winter.
How much to take
For an established healthy bush: shorten the current season's stems by roughly a third, always above a leaf pair or side shoot. Each correct cut produces two new branches from below the cut point β the more correctly you prune, the denser the bush becomes.
If the bush is already partly woody at the base: do not attempt a hard cut to the base. Rosemary cannot be renovated like a rose. The only option is gradual reduction β each year, cut the tallest stems back to the lowest green zone you can find, allowing more light to the base. Over two to three years the bush lowers itself progressively. If the base is entirely bare and brown β replace the plant and prune the new one correctly from the start.
Harvesting as pruning
The simplest maintenance is to use the rosemary regularly in the kitchen. Every sprig cut for roasting is a micro-prune that keeps the bush compact without any dedicated pruning session. The healthiest rosemary in the garden is the one harvested from every two to three days β regular cutting is the perfect pruning.
The ideal shape
A correctly maintained rosemary bush is a low dome β wider at the base, rounded at the top. Light reaches all sides equally. Achieve this by cutting the upper stems slightly shorter than the lateral ones β the lower centre forces light inward and prevents basal dieback.
Avoid columnar form (tall and narrow): the top shades the base, the lower leaves drop, and the plant becomes a green spike on a brown stick.
Ten minutes with secateurs after flowering is all a rosemary bush needs to live for twenty years. βοΈ
The fatal rule
Rosemary will not regenerate from old wood. If you cut into the brown, woody part of a stem β below the zone of green foliage β that stem is dead. No new buds will emerge from it. It stays as a dead stump. This is why a rosemary clipped repeatedly with hedge shears becomes bald at the base within three to four years: each clipping shortens the green zone slightly further, and eventually the bare wood dominates. Once the base is fully bare and woody, the plant cannot be recovered.
Lavender behaves the same way. Sage too. But rosemary is the most unforgiving.
The correct cut
Always cut only in the green part of the stem β where foliage is visible. Cut 2-3cm above the junction with a smaller green side shoot. That side shoot becomes the new growing tip. One rule of thumb: if you can see green below the cut point, it is safe. If you see brown below the cut point, you are killing that branch.
Never use hedge shears on rosemary. They cut green and old wood indiscriminately and destroy the plant from the base up. Use secateurs, branch by branch, checking each cut is in green wood. A normal-sized rosemary bush takes ten minutes.
When to prune
The main prune is after flowering β late April to May in most of England, earlier in sheltered or south-facing positions. Wait until the flowers have finished (they are important for early pollinators when little else is out) then cut back the new season's growth by about one third, always above a green side shoot.
A second light tidy in September to shape before winter. Do not prune after October β new growth stimulated by cutting will not harden in time before the first frosts and the soft tips will die back in cold weather.
Never prune in winter.
How much to take
For an established healthy bush: shorten the current season's stems by roughly a third, always above a leaf pair or side shoot. Each correct cut produces two new branches from below the cut point β the more correctly you prune, the denser the bush becomes.
If the bush is already partly woody at the base: do not attempt a hard cut to the base. Rosemary cannot be renovated like a rose. The only option is gradual reduction β each year, cut the tallest stems back to the lowest green zone you can find, allowing more light to the base. Over two to three years the bush lowers itself progressively. If the base is entirely bare and brown β replace the plant and prune the new one correctly from the start.
Harvesting as pruning
The simplest maintenance is to use the rosemary regularly in the kitchen. Every sprig cut for roasting is a micro-prune that keeps the bush compact without any dedicated pruning session. The healthiest rosemary in the garden is the one harvested from every two to three days β regular cutting is the perfect pruning.
The ideal shape
A correctly maintained rosemary bush is a low dome β wider at the base, rounded at the top. Light reaches all sides equally. Achieve this by cutting the upper stems slightly shorter than the lateral ones β the lower centre forces light inward and prevents basal dieback.
Avoid columnar form (tall and narrow): the top shades the base, the lower leaves drop, and the plant becomes a green spike on a brown stick.
Ten minutes with secateurs after flowering is all a rosemary bush needs to live for twenty years. βοΈ
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