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Summer Perennial Plants

Make the most of sunny days with a stunning selection of summer perennial plants at Boma Garden Centre, perfect for brightening up your garden, patio, or balcony, our summer perennials deliver vibrant blooms and long lasting colour from early summer right through to late autumn. Whether you're planting cottage garden borders, mixed beds, or a single pot on a London terrace, our carefully chosen range of hardy perennial flowering perennials thrives in full sun or partial shade.

Shop our summer perennials at Boma in Kentish Town.

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About Our Summer Perennial Plants Collection

Boma's huge range of summer perennial plants includes beloved cottage garden favourites alongside less familiar but highly garden-worthy species. Among the most popular are lavender for its fragrance and drought tolerance, salvia for upright flower spikes, Russian sage (Perovskia) for late-season silver and blue, and Giant Hyssop (Agastache) for pollinator value in mixed borders. Dahlias add bold flower colour from midsummer through early autumn, while Coreopsis and Sedum ensure structure persists into the cooler months. All are herbaceous perennials that return reliably each spring.

Most summer perennial plants prefer full sun and well drained soil, though many (including Geranium and Astrantia) are equally happy in partial shade. Once established, hardy perennials are drought tolerant and require little fuss through the growing season. Regular deadheading extends flowering summer long, encouraging a second flush of colour into late autumn. Flowering perennials such as Salvia nemorosa 'Caradonna' and Verbena bonariensis are particularly valuable for bees and butterflies, making them ideal for wildlife-friendly and cottage garden schemes.

Many gardeners begin with summer perennials and never look back. Our team curates perennial plants that hold garden merit season after season — from the blue flowers of Agapanthus 'Poppin Purple' to the yellow flowers of Rudbeckia and Coreopsis, each offering colour, structure, and texture. We also stock complementary annuals for instant impact alongside the perennials. Browse in store at Kentish Town to find the right perennials for your outdoor space, or shop online with fresh stock updated throughout the season.

Popular Questions

What are the best summer perennial plants?
Top performers among our summer perennial plants include Lavender, Agapanthus, Salvia nemorosa 'Caradonna', Geranium 'Rozanne', Nepeta 'Walker's Low', Verbena bonariensis, and Echinacea. These hardy perennials are drought tolerant once established, produce vibrant blooms from early summer into autumn, and reliably attract bees and butterflies. Many hold the RHS Award of Garden Merit, recognising their consistent performance in UK growing conditions.
Is there a perennial that blooms all summer?
Several summer perennials flower continuously summer long with minimal intervention. Catmint (Nepeta) blooms from late spring until early autumn when cut back after the first flush. Russian sage produces lavender-purple flowers from midsummer onwards, and Coreopsis blooms steadily without much deadheading. Salvia nemorosa varieties deliver a strong second flush after cutting back. All are low maintenance perennials suited to full sun and well drained soil.
What are low maintenance perennial summer plants?
The most low maintenance summer perennials we stock include Sedum, Echinacea, Lavender, Geranium, and Agapanthus. These drought tolerant plants thrive in well drained soil and full sun, and need only an annual tidy in early spring. Sedum holds its shape well into autumn without deadheading, while Lavender benefits from a light trim after flowering. All are hardy perennials that return each year without replanting.