Nepeta ‘Summer Magic’ is a compact, long-flowering perennial known for its aromatic foliage, neat habit, and rich lavender-blue flower spikes that attract pollinators all summer long. A more refined and reliable form of catmint, it’s ideal for sunny borders, cottage gardens, gravel planting, and containers.
Type: Herbaceous perennial
Common Name: Catmint
Foliage Colour: Grey-green, aromatic
Flower Colour: Lavender-blue
Height: 40cm (1.3ft)
Spread: 40cm (1.3ft)
Flowering Time: June to September
Hardiness: Hardy in the UK down to temperatures of -20 degrees Celcius (RHS hardiness rating H7)
Position: Full sun
Soil: Well-drained, moderately fertile soil
Unlike some older varieties of catmint, ‘Summer Magic’ maintains a compact and upright shape throughout the season. Its neat, bushy growth doesn’t flop or sprawl, even after rain, making it a great choice for the front of borders, path edges, or formal plantings where structure matters.
From early summer to early autumn, ‘Summer Magic’ produces a profusion of slender flower spikes in vibrant lavender-blue, rising above fragrant grey-green foliage. The flowers are highly attractive to bees, butterflies, and other pollinators, providing months of colour and wildlife value in the garden.
With its soft texture and cooling hues, Nepeta ‘Summer Magic’ fits beautifully into informal schemes, wildlife-friendly borders, and Mediterranean-style plantings. It works well as a low-growing companion to roses or as an edging plant along gravel paths and sunny beds.
Watering: Water regularly during the first growing season to help establish roots. Once established, it is drought tolerant and rarely needs watering.
Feeding: Not a heavy feeder. Apply a general-purpose fertiliser in spring if needed.
Pruning: Shear back after the first flush of flowers in midsummer to encourage fresh growth and repeat blooming. Cut back fully in late autumn or early spring.
Dividing: Divide every 3–4 years in spring to maintain vigour and tidy form.
Positioning: Best in full sun with well-drained soil. Avoid overly rich or wet soils, which may encourage sprawling.
Potted: Yes, Nepeta ‘Summer Magic’ is well suited to container growing. Use a loam-based compost mixed with grit for drainage. Choose a medium-sized pot with good drainage holes and place it in a sunny position. It’s perfect for patios, balconies, or as a fragrant, low-maintenance container plant.
With an RHS hardiness rating of H7, ‘Summer Magic’ is fully hardy throughout the UK. It is deer and rabbit resistant, tolerates heat and drought, and rarely suffers from pests or diseases, making it a reliable choice for gardeners seeking low-maintenance performance.
Pair Nepeta ‘Summer Magic’ with:
Salvia nemorosa – for a rich tapestry of blues and purples
Achillea ‘Terracotta’ – for warm-toned contrast
Lavandula angustifolia – to echo scent and Mediterranean charm
Roses – to soften edges and attract beneficial insects
Nepeta ‘Summer Magic’ combines long flowering, great structure, and pollinator-friendly performance in a compact, easy-to-grow form. Its aromatic foliage and extended blooming season make it a favourite for low-maintenance gardeners and busy borders alike.
Plant Nepeta ‘Summer Magic’ for months of lavender-blue flowers, fragrant foliage, and a reliable, compact habit that thrives in sun-soaked spaces or stylish pots.
Buying Perennials from Jacksons Nurseries
At Jacksons Nurseries we lightly trim back our perennials after flowering and trim them back at the end of the season to ensure that the plants remain neat and tidy whilst in the pot. The more tender the plant the less we cut back to help protect exposed stems from winter frost. Depending on the plant variety we will then prune back further in spring once the risk of the more severe frosts is over.
As a result, depending on the time of year you buy perennials, they may not look like images showing their ‘prime time’ in flower and looking at their best.
From late autumn onwards and dependent on variety, there may be very little visible above the soil except for a few cut back dormant leaves or stems. It is perfectly normal for dormant plants to look like this from autumn onwards, they will however burst back into life in spring.
Availability: Stock availability figures are provided as a guide only. There is a delay between orders being placed and the plants being gathered by our pulling team. During this time it may be possible for a member of the public to purchase these plants from our Garden Centre, while this is rare it is a possibility and we will notify you of any problems as soon as possible. This figure may also include plants that have not yet be flagged as unsaleable.
Pre-order: Pre-order times are given as a guide only and may vary dependent on the growing season. Orders containing Pre-ordered products will be shipped as a single order when all items become available. Large orders may be part shipped, please contact us on 01782 502741 or email sales@jacksonsnurseries.co.uk.
Perennials are described and classified differently by different gardeners but all would agree that they are plants that come into flower every year from early spring to late summer, the exact time dependent on variety and most die back to ground level in autumn and winter.
As for all plants, soil preparation is time well spent. Dig over the area to be planted ensuring that the ground is free draining. If not then you may wish to either consider planting in a different spot or raising the level of the planting area by adding additional topsoil, well rotted garden compost and/or well rotted manure. Add ‘Fish, Blood and Bone’ fertiliser or a high potash fertiliser to encourage good root growth and development.
It’s always a good idea to plant a few of the same plant together, we recommend planting in 3’s or 5’s to provide a bold effect but allowing them plenty of room to develop.
Always check eventual plant heights when planning borders to ensure that the taller plants are at the back (or at the centre of an island bed) followed by the medium and then smaller low growing plants.
Remember to deadhead perennials after flowering, trim back lightly in autumn as required to tidy the border and if necessary trim again in spring once the risk of heavy frost has passed.
If perennials get too big, start to flower less and less or if it seems to be dying off from the centre, consider dividing the plant but always check that the particular variety is happy to be divided and that you divide at the right time of year for the plant.
By using this simple guide and a little time, perennials can make an absolutely spectacular difference to your garden.
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