Our September meeting focused on something which concerns most of us round here to some degree – trying to garden effectively within sight of the sea. Quentin Deakin is from Cambrian Coast Gardens in Tywyn, and himself lives within 150 metres of the coast, so he knows the problems: high winds, salt, sand, intense rain, intense sunshine…
But there are advantages too. By and large, coastal climates are milder, with cleaner air, good levels of sunshine and seaweed available as a fertiliser (only in moderation, see below). He tests various things in his own garden, and is using Rosa rugosa
as a hedge, though he is also experimenting with tamarisk, pruned to shape. Windbreaks, as he stressed, are essential – he pointed to the way trees will grow better close to the coast when protected by something like the gable end of a ruined farm building – and density of planting can also help.
When it comes to plant choices that will cope with the demands of a seaside garden, Mr Deakin stressed the value of looking at wild plants that flourish in our environment, whether that’s things like sea pinks,
seen here on the Mawddach Trail, or various sedums and sempervivums,
which can do very well indeed. What other plants are worth thinking about? Well, among others, buddleias and hydrangeas (he suggested some of the more unusual varieties) can cope, as can grasses (Zebra grass generally stays upright, often in the face of high winds) and things like cordylines. He also recommended chokeberry, and pointed out that cotton lavender often thrives as well. He has had success with hollyhocks, somewhat out of fashion at the moment, but spectacular, and with all sorts of sea hollies. He brought along one, E. agavifolium,
which went onto the raffle table and led to more ticket sales! (the photograph is courtesy of Beth Chatto gardens, who have it for sale… just saying, for those who didn’t win the raffle).
Footnote: using seaweed.
The collection of seaweed is illegal, but the laws are really designed to stop commercial, widescale depletion; the key, says Quentin Deakin, is not to be greedy. You have to rinse the salt off or expose it to rain, and then let it rot down, either in the compost bin (in smaller quantities) or in its own bin – he generally keeps seaweed separate. It can be used as a concentrated fertiliser. dug in to the soil in January or February,