With spring in full bloom, Brits are flocking to their gardens, but gardening success may depend less on the weather and more on what lies beneath their feet. According to gardening expert Craig Wilson, co-founder of Gardeners Dream, understanding your local soil’s pH is key to knowing what to plant.
Recent data reveals a 29% surge in online searches for “soil type” in the past quarter, showing a growing interest in soil science among home gardeners. Using estimates from topsoil pH maps across Great Britain, Wilson has shared expert advice on the best plants to grow based on regional soil profiles.
He explained: “pH influences the availability of soil nutrients. Once you understand your soil’s natural makeup, you can either work with it or gently tweak it to suit your gardening goals.”
Here’s a regional breakdown of the UK’s topsoil pH, and what you should be planting.
Scotland & North England – Acidic Soils (pH <5.0 to 6.5)
These highland and northern regions are ideal for woodland-style gardens. Acid-loving plants like blueberries, cranberries, gardenias, and rhododendrons will flourish here. Gardeners are encouraged to add organic matter like pine needles to maintain acidity.
“Avoid forcing alkaline lovers like lavender here,” Wilson warns. “It’s far better to plant what naturally thrives.”
Wales, Midlands & Western England – Slightly Acidic to Neutral Soils (pH 6.0–7.2)
These regions are perfect for a wide array of vegetables and flowers, including carrots, lettuce, roses, and hydrangeas. Crop rotation is crucial to maintaining long-term soil health.
“Hydrangeas can be colour-sensitive to pH, for blue blooms, you’ll still need acidic conditions,” Wilson notes.
East Anglia, Essex & Kent – Alkaline Soils (pH 7.5–8.0+)
These chalky areas suit plants that thrive in lime-rich conditions such as lavender, lilac, cabbage, and broccoli. However, gardeners here should be mindful of water drainage and consider mulching to retain moisture.
“Acid-loving plants here will struggle unless you use ericaceous compost,” says Wilson.
South Coast & Cornwall – Mixed pH (5.0–8.0+)
This coastal region offers variety, but pH can fluctuate with rainfall. Regular testing is advised for success with crops like tomatoes, peppers, beans, and dahlias. Choose plants resilient to humidity and sea breeze.
“This is a great spot for ornamental flowers and summer displays,” Wilson added.
Wilson advises using simple pH test kits which are widely available at garden centres or online, to understand your soil before planting. Whether you’re growing vegetables, herbs, or a colourful flower bed, knowing your soil type can make all the difference.
“Gardening is all about working with nature, not against it,” says Wilson. “Start from the ground up, literally.”
