Rosemary can be highly variable and this one is a fine example of that variability. Trailing or Prostrate Rosemary covers the ground in pleasing undulations but is at its best when cascading over a wall - illustrated here by a particularly fine example spotted in Dale in Pembrokeshire.
The leaves are smaller than common Rosemary but it still smells as delicious and has masses of the same blue flowers in spring. Also, just as valuable in the kitchen as any other Rosemary.
We had a lot of snow in the winter of 2010 and found the batch we had at the time disliked it intensely. Many years ago we had plants propagated from a particularly beautiful form from Tresco Abbey Garden in the Isles of Scilly where frost is rare or slight. We had to abandon this clone because of its frost tenderness but were determined to find a fully hardy form of this plant. A well grown one of these is one of the glories of any garden - the smell, the sight and the texture is divine and so the search for a fully hardy form of Trailing Rosemary continued and we now can confidently say we have one but being innately cautious, we still give this plant an amber label rather than a green one.
Rosemaries must have good drainage and lots of light. If you garden on the Sussex and Kent Weald (or anywhere with brick-making clay), the soil will not be sufficiently well drained to grow Rosemary (or Lavender) without human interference. The top of a retaining wall, trailing down is ideal. Something to trail down and the top of the wall must have good drainage - even if you're on heavy clay. Acid or alkali - including chalk - is fine.
Propagated by cuttings.
IF IT HAS AN AMBER TRAFFIC LIGHT
Hardy in the Home Counties if sensibly sited (avoiding severe frost pockets, for example). Many Amber Labelled Plants are from cuttings from well-established plants that have survived many harsh winters in the South-East.
This is only meant as a guide. Please remember we're always on hand to give advice about plants and their frost hardiness.
Please remember that these coloured labels are only a rough guide.
General Point about Plant Hardiness: The commonly held belief that it's better to 'plant small' is perfectly true with herbaceous plants, but not necessarily true with woody plants. They need some 'wood' on them to survive severe cold - so plants of marginal hardiness in very cold areas should really be planted LARGER, rather than smaller, wherever possible.
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