Create the right soil
Mediterranean soil tends to be sandy and free-draining, so plants from that region will suffer if planted into waterlogged or heavy ground. If you have a claggy clay soil, there are ways to improve it for Mediterranean plants. Create raised beds so you can buy and barrow-in a load of lighter topsoil. Construction and materials can make this a relatively expensive option. Add plenty of organic matter to your existing soil. Well-rotted horse manure, spent mushroom compost or any soil improver will make a big difference – but add it in large quantities. To incoporate the organic matter into your soil, don’t dig it in: just spread a thick layer on top in spring and autumn, then sit back and let the worms do the hard work. Within a few months you should notice your soil is more open, better drained and easier to work. Dig in plenty of horticultural grit to particularly heavy, wet problem areas. Or simply plant your fussiest plants on a low mound to help drainage.