Hiking in the Peloponnese this summer reignited my interest in adding more Mediterranean plants to my designs. But how would that work for my latest project in Paul, where the West Penwith peninsula sees four times the rainfall of a Mediterranean hillside? Then, as I was walking up to Paul from Mousehole, I spotted a snapdragon happily growing in a boundary wall, and it clicked.
Cornwall’s sculptural granite walls are perfect for these plants. They create little microclimates that can mimic the drier conditions of the Med, even with all the rain. By using the granite hedges along the garden’s boundary, I can plant a range of drought-tolerant species that’ll thrive here.
And the granite itself is stunning—unlike any I’ve seen before. Its soft grey, flecked with big chunks of feldspar, is a beautiful backdrop for the colourful Mediterranean plants, creating a textural tapestry that suits this coastal landscape perfectly.
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What To Do This Month
After an unusually stormy autumn, take stock of any damage in the garden. Newly planted trees and shrubs might be suffering from wind rock, where the roots have loosened due to strong winds. Firm the soil around the base and check the stakes and ties to ensure they are secure. If you find any snapped branches, prune them back to healthy wood to prevent disease.
With Cornwall’s winters leaning more toward wet than frosty, managing moisture is key. In greenhouses, polytunnels, and conservatories, good airflow is essential to prevent mildew and fungal issues. Open vents on dry days and remove dead plant material to reduce humidity. Low light levels can also stress houseplants. Move them to a brighter window and allow the soil to dry out completely before watering again. For outdoor beds, keep drainage channels clear, and consider adding grit or organic matter to prevent waterlogged roots.
While Cornwall’s climate is relatively mild, the combination of damp and coastal winds can still harm tender plants. Wrap delicate species like tree ferns, young citrus, and salvias with fleece. For potted plants in conservatories, check regularly for signs of rot—move them to a drier spot if needed.
December is also the time to prune apple and pear trees. The canker has been particularly prevalent this year, so make sure to remove all infected branches and dispose of them well away from the orchard to prevent spread.
If You Do Just One Thing
Use the quiet time to give your tools some TLC. Remove rust, sharpen blades, and oil wooden handles to prevent splitting. Well-maintained tools make pruning and planting easier in spring.
Lonicera x purpusii ‘Winter Beauty’, a deciduous honeysuckle, is a wonderful addition to any Cornish garden. Flowering from December to early spring, it produces clusters of tiny, creamy-white blooms that fill the garden with a sweet, citrus-like fragrance. Its bare winter stems look stunning planted near entrances or pathways.
