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Perennials that die back to the ground in winter, such as Nepeta (below), can be cut back hard in July. Those that keep a year-round framework, such as these woody Salvias should be cut by half
How to Hampton HackPlants that keep a woody framework, such as Perovskias (Russian sage) and many of the Salvias, should be cut back by about half.
For evergreens - those that keep their leaves all year round - you will be looking to cut out old flower spikes and any unsightly shoots. Evergreen perennials include Euphorbia, Dianthus, Bergenia, Geum and Heuchera. But for the majority of perennials you are looking for a wholesale clearance down to just a couple of inches, mimicking what the plants do in wintertime. Geraniums, Nepetas, Campanulas, Delphiniums, Verbascums and Lupins are some of the very many perennials that can benefit from the treatment in July. Perfect for pollinator plants for June include, clockwise from top left, Cirsium, Astrantia, Cistus, Digitalis (foxglove), Dianthus (garden pink), Campanula, Cosmos, Salvia nemorosa
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The Flourishing GardenFeatured articles from our magazine, The Flourishing Garden. Pick up your print copy at Katie's Garden, Newbourne. AuthorArticles by Catherine McMillan, author of Gardening for the Uncommitted: What you really need to know when you don't really want to know
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