Thompson & Morgan

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Perennial & Biennial Plants

In this range you'll find an impressive selection of perennial plants and biennial plants, which are perfect for beginners and experienced gardeners alike. Also known as herbaceous plants, perennial plants live for 2 or more years and flower every year. Biennial plants live for up to 2 years, flowering profusely in their second year before setting seed and dying. Both are great for beds and spring displays and there are many delightful plants to choose from. Use the selections in the left menu to select the right plants for your garden.

For beautiful summer flowers browse our range of annual plants.

We have found 2 products.

Agastache 'Summer Glow' (Large Plant)

This fantastic perennial is one of the best slug-proof plants for your garden. Slugs and snails dislike the felted, minty-fragranced foliage, so plants are left completely untouched.

Agastache are compact, evergreen plants, with colour-changing flowers, which are loved by bees and butterflies. Agastache plants are also very drought tolerant, and are can be grown in the border or patio pots. Height: 60cm (24"). Spread: 45cm (18").

Culinary note: Add both flowers and leaves to cakes or whipping cream for a hint of anise flavour. For more details about edible flowers click here.


Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer
More info
    • 1 x 1 litre potted agastache plant

    • Despatch: Within 28 days
    • £9.99
    • 2 x 1 litre potted agastache plants

    • Despatch: Within 28 days
    • £16.99

Geum 'Mai Tai'


A compact Geum with beautiful, ruffled apricot-orange blooms emerging from contrasting burgundy buds. From early summer through until early autumn this variety produces a profusion of pretty blooms on wiry stems, which are ideal for cutting and adding to posies or vases indoors. An easy and reliable perennial to grow, plant Geum 'Mai Tai' at the front of borders for an abundance of warm colour throughout summer. Height: 45cm (18"). Spread: 40cm (16"). More info
    • 1 bare root geum plant

    • Despatch: By end of November 2016
    • £10.99