Hastings changes character inside a mile, and that shapes every planting job we take on here. On the high ground near the sea the wind comes off the Channel carrying salt, and a few hundred metres inland the land drops into steep wooded valleys where the air sits still and damp. A species that shrugs off one of those will sulk in the other, which is why we look at the site before we talk about what to put in it. All of our tree and hedge planting starts that way.
Three Different Rocks Under One Town
All three of the Hastings Beds formations reach the surface inside the town, which explains a great deal. The British Geological Survey maps the town centre and St Leonards as Tunbridge Wells Sand, a mix of siltstone, mudstone and sandstone. Silverhill, Hollington and Clive Vale sit on Wadhurst Clay. The Old Town and the ground out towards Ore are on the Ashdown Formation, the same rock as the cliffs running east to Pett Level.
So one garden can be sandy and sharply drained while a street away you are on clay that holds water all winter. That is not something to guess at. We dig a hole, see how far down we get before the spade changes note, and fill it with water to see how long it takes to go away.
Salt, Wind and Shelter
Exposure matters more here than soil pH. Salt-laden wind scorches soft new growth, and a young tree that is still putting roots out cannot replace leaves as fast as the weather takes them off. On the seaward side of town we plant tough stock, keep it low to start with, and let it thicken before it gains height.
Drop down into the sheltered valleys and the problem reverses. There is no wind to speak of, the ground holds moisture, and the risk is a tree that races away soft and leggy because nothing is checking it.
