Lavender is one of the nation’s best-loved garden plants, filling borders with fragrant purple blooms while attracting bees and butterflies throughout the warmer months.
But if your lavender has started looking a little tired or isn’t flowering as well as you’d hoped, there may be a simple solution already sitting in your garden shed.
Adding a layer of gravel around lavender in July can help recreate the hot, dry conditions this Mediterranean plant naturally enjoys. From improving drainage to keeping excess moisture away from the base of the plant, this easy gardening trick could help encourage healthier growth and more vibrant blooms throughout summer.
Why gravel could be the secret to happier lavender
Lavender thrives in sunny, dry conditions and adding gravel can help mimic the free-draining environment it would naturally experience in the Mediterranean.
"Adding a layer of gravel around established lavender plants in July can also help improve flowering by keeping the base of the plant dry. Lavender really does thrive in hot, well-drained Mediterranean conditions, so gravel helps recreate that environment by preventing excess moisture from sitting around the crown," advises Paul Parker, gardening expert at J. Parker’s.
"Lavender likes a lot of sun, dry roots and does not require a lot of effort. Scattering gravel around it in July can help because it provides lavender with free-draining conditions that it naturally enjoy. Too much moisture around the roots will cause lavender to produce weak growth, fewer flowers, or it may even die," explains Erik Collado Vidal, horticulturalist, cultivation industry expert and CEO of Growbarato.net.
How gravel helps lavender thrive
Beyond improving drainage, gravel can offer a number of benefits that support lavender throughout the summer months.
Paul explains: "Gravel reflects warmth back up to the plant while also helping to suppress weeds that would normally compete for water and nutrients. This allows excess moisture to drain away from the plant and helps create the dry conditions that lavender prefers, keeping it healthy and encouraging strong flowering throughout the summer.
While Erik adds: "Gravel helps keep the base of the plant drier after rain, stops soil from splashing onto the leaves and reflects heat back up toward the plant. In cooler or wetter gardens, that extra warmth means a lot, because lavender struggles in cold damp areas and has trouble producing the strong oils that give it its scent."
How to add gravel around your lavender
If you’re trying this simple summer gardening tip, it’s important to apply gravel carefully. A thin layer is all that’s needed – and it should never be piled against the main stem of the plant.
"Make sure not to bury the crown of the plant. Scatter a thin layer of small gravel or horticultural grit around the base, 2 to 3 cm away from the main stem," advises Erik.
One thing to check before adding gravel
While gravel can help lavender thrive, it cannot replace good planting conditions. If your garden has heavy soil or poor drainage, you may need to make further changes to keep your plants healthy.
"If the soil is heavy clay, gravel will not fix the poor drainage there, so it is better to plant it slightly raised or in a pot with gritty compost mix. Once lavender is established, it needs a lot less water than people may think. So July is not a bad time to check if it is being overwatered," says Erik.
For a classic cottage garden feel, choosing the right lavender variety can also make a difference. "Lavender is a staple of any gravel garden, instantly adding a Mediterranean feel to your outdoor space. I would recommend Lavender ‘Hidcote’, a popular English lavender that is perfect for mass planting. Its evergreen, silvery-grey foliage will add interest to your gravel garden all year round," says Paul.
A simple summer job for beautiful lavender
Gravel is not a replacement for sunshine, good soil and careful watering, but it can be a useful addition to help lavender enjoy the dry, free-draining conditions it loves. With a few handfuls of gravel and the right care, gardeners can help their lavender stay healthy, fragrant and full of colour throughout the summer season.
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