Plant Offers for June
Agapanthus Collection
Magnificent clusters of bell or trumpet shaped flowers top the upright stems of these decorative, sun-loving perennials from mid-to-late summer. Suitable for sunny sheltered borders with fertile, moist but well-drained soils, they will benefit from the protection of a generous layer of mulch in autumn.
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Sedum Collection
Mostly originating from dry, rocky areas, succulent-leaved stonecrops are easy to grow and will thrive in sunny spots with poor, to moderately fertile, well-drained soils. Their flowers, which appear in terminal clusters, will provide long-lasting, late colour and are rich in nectar so help attract beneficial insects.
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Lavandula Collection
Universally sought after, lavenders provide year round interest and will fit comfortably into most garden settings. Bred as a seed strain and noted for their ability to flower in their first year, the lavenders in the Ellagance Series have a well-branched, bushy habit and will produce large flower spikes over a long period in summer.
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Veronica Collection
These attractive, undemanding speedwells produce an abundance of slender flower spikes over several months throughout summer. They make long-flowering additions to the front of the border and are well-suited to patio pots or larger windowboxes.
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The RHS Primula auricula Collection
These endearing perennials are highly prized for their colourful flowers, which emerge above the rosettes of evergreen foliage in spring. The Show auriculas will make beautiful exhibits when grown under glass. The Alpine types, that do not have a meal covering (such as ‘Bradford City’) can be grown outside and make wonderful additions to alpine beds, pots and mixed herbaceous borders.
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Scented Dianthus Collection
These popular Scent First Series pinks are grown primarily for their decorative flowers, which are produced in abundance over a prolonged period throughout summer. Plant them in a sunny spot with well drained, chalky to neutral soil and dead-head frequently to prolong the flowering season even further.
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The RHS Centurion Series Collection
From early summer, these eye-catching Centurion Series delphiniums produce impressive spires of large, well-formed flowers in a range of beautiful colours. They look effective when planted in clumps or drifts through a cottage or herbaceous border and will flourish in a sunny spot with rich, well-drained soil. All parts of the plant may cause severe discomfort if ingested and contact with the foliage may cause skin irritation.
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The RHS Digitalis Collection
Noted for their ability to flower in their first year, the Digitalis in the Dalmatian Series are ideal for cottage gardens and naturalised planting schemes, where they will put on an impressive display for several months from early summer. Short-lived perennials, they can be encouraged to produce a second flush of flowers if deadheaded promptly and will often self-seed.
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The RHS Pulmonaria Collection
Low growing, slowly spreading plants, lungworts are ideal for providing groundcover in shaded sites beneath trees and shrubs. Their funnel-shaped flowers appear early in the year and provide an excellent source of nectar to bumblebees. Tolerant of a wide range of soils, they prefer a fertile, humus-rich, moist but not waterlogged soil.
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The RHS Hollyhock Collection
Cottage garden favourites, hollyhocks produce tall, slender flowerspikes from early to midsummer and are useful for adding structural interest, colour and height to the border. The hollyhocks in this collection belong to the Chater’s Double Group and are vigorous perennials with large, peony-form double flowers.
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The RHS Tigridia Collection
Producing a succession of exotic-looking blooms in a range of vivid colours, these tender, bulbous perennials make wonderful additions to the summer border or patio pot. Hardy to 8°C, bulbs that have been planted outside in areas prone to frost should be lifted in autumn and stored in a bed of dry sand.
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