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RHS Wisley’s inspiring ways with lavender

RHS Garden Wisley has an enviable collection of lavenders. Our garden team share their advice on how to get the most from these much-loved fragrant summer plants

Thousands more lavender plants have been added to the Viewing Mount at RHS Garden Wisley. Planted in alternating stripes, two lavender cultivars in contrasting colours spiral around the mount, creating a fragrant carpet that delights both visitors and pollinators in the summer months.

Sitting above the Oudolf Landscape, the Viewing Mount was originally planted in 2019 with a combination of lavenders and rosemaries. “While both plants loved this sunny spot in summer, with its bone dry, poor soil, the rosemaries suffered in winter when the mount often becomes windswept and frosted,” says Paul Kettell, Team Leader for Edibles.

Impressive stripes of Lavandula angustifolia MELISSA LILAC (‘Dow4’) and Lavandula x intermedia OLYMPIA (‘Downoly’) on the Viewing Mount
“The lavenders, however, have thrived and support a huge number of bees and butterflies, so the decision to add more lavender was very much a ‘right plant, right place’ approach,” says Paul. “We’ve chosen a different cultivar with pale blooms to give a contrast in flower colour and maintain the mount’s candy cane striped effect, while also extending its flowering season.”

Stripes of Lavandula angustifolia MELISSA LILAC (‘Dow4’), with its light mauve flowers, sing out against the deep blue-purple flowerheads of hybrid lavender Lavandula x intermedia OLYMPIA (‘Downoly’), which was planted in 2019. Gardeners at home looking for suitable plants for a dry sunny spot could replicate this combination on a smaller scale.
 

Planting that smells as good as it looks

Ribbons of Lavandula x intermedia cultivars in front of the Stone Pine Café
Inspired by the traditional lavender fields of France, there are further mass plantings of lavender to enjoy on the lawn in front of the Stone Pine Café. Neat rows of purple and white Lavandula x intermedia cultivars scent the air with delicious fragrance in this sunny, secluded spot.

These hybrid lavenders were chosen for their tall flowers and high oil yield, which give them a strong aroma. Situated near RHS Wisley’s beehives, the ribbons of lavender are abuzz with bees and other pollinating insects.

Lavandula x intermedia ‘Heavenly Angel’
Lavandula x intermedia ‘Provence’
Top tips – where to plant lavenders

  • Lavenders look great in flower borders, herb gardens and as a low hedge or edging to a border. They also grow well in pots.
  • They thrive best in free-draining soils and full sun, growing particularly well in chalky and alkaline soils.

Romantic cottage garden style

The Cottage Garden is awash with lavender, roses and catmint
Lavenders also feature in the relaxed and romantic planting of the Cottage Garden. “Plants from similar habitats and with the same cultural needs grow close together in an English cottage garden style, providing plenty of ideas that could be adopted in smaller home gardens,” says Emma Allen, Head of Horticultural Relations.

“A winning combination to copy is Rosa Wild Thing (‘Jactoose’) AGM, Geranium Rozanne (‘Gerwat’) AGM and catmint Nepeta ‘Six Hills Giant’ AGM. The arches here are draped with Rosa mulliganii, which bears single white flowers in profusion. As this rose only flowers once, we grow it with purple Clematis Wisley (‘Evipo001’) to provide an extra hit of summer colour.”
Top tips – caring for your lavenders

  • English lavender (Lavandula angustifolia) and its hybrids (L. x intermedia) are usually hardy so can be left outside during winter in free-draining soil.
  • Cut off spent blooms to encourage more to form. However, you can leave them in place towards the end of the flowering season as food for seed-eating birds such as goldfinches.

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