August

Sedum forsterianum ‘Silver Stone’ is one of the more unusual textured species, with whorls of silver-green foliage. In late summer bright yellow star shaped flowers appear. This low-growing succulent plant grows to a height of 15 to 20cm, extremely hardy it can cope with temperatures down to minus 34°C.

Sedum album is one of the most popular forms of sedum, known for its dense foliage as it changes colour throughout the seasons. The leaves emerge a coral-salmon in spring, change to bright green in summer and then to reddish bronze with the arrival of cooler temperatures. In summer the plants explode in masses of tiny, white star-shaped flowers.

Delicate in appearance and yet very cold hardy, Sedum acre is beautiful from the first stirrings of early spring to the twilight of autumn. Hardy and very easy to grow. Started early it will form a nice dense ground cover the very first season. If the weather is favourable it will flower within six months.

The Fama series is well known for its particularly large flowers that are held on long, strong stems. Beloved by flower arrangers, they are considered to be best strain for cutting. This perennial form of Scabiosa are very easy to grow and will flower in their first year from an early sowing.

'Fama' is a most elegant flower. With long stems and intense blue blooms, it is the largest flowering and most uniform strain of the Blue Pincushion. They mature into dense tufts of lance shaped, grey-green leaves from which arise a beautiful display of intense lilac-blue flowers each with a silvery centre.

An absolute gift to flower arrangers, this is a noble and ornamental plant for the back of any border making nice clumps of foliage. It is, of course, the flowers that are remarkable: three or four inches across, “green” is one’s immediate impression on seeing them.

Venerating a former plant curator at the Royal Botanic Garden in Edinburgh, Scotland, 'Ron McBeath' is a beautiful new semi-dwarf cultivar. This diminutive potentilla repeat-flowers for months, sending up wands of rosy carmine flowers even in shade. It outlasts other potentillas by far.

Potentilla 'Helen Jane' is a beautiful new semi-dwarf cultivar that displays gorgeous crimson-eyed, bright pink flowers, with petals that are attractively crinkled just like crepe paper. Flowering over a long period, new buds open repeatedly in a long succession, from late June to September.

Russian Sage is one of the great garden plants of all time, but if you've been frustrated by their floppy nature, this new variety will be a welcome addition. Growing to about 60 to 75cm tall, Perovskia atriplicifolia 'Taiga' is also the first Russian sage available as a first year flowering perennial.

A winner of both an AAS and Fleuroselect Awards, Penstemon ‘Twizzle Purple' is a first year flowering perennial that boasts twice the length of flowering stem. Strong, trouble-free plants produce trumpet shaped magenta-violet blooms that flutter all along tall, slender stems.

Penstemon barbatus 'Twizzle Coral' adds a graceful twist to the garden. A first year flowering perennial, that is hardy and vigorous, it boasts twice the length of flowering stems, giving longer, more elegant wands for the vase while preserving the natural elegance of Penstemon barbatus.

Awarded a Fleuroselect Medal for striking colour, plant habit, and flowering performance, Penstemon barbatus 'Twizzle Blue' is a first year flowering perennial that will add height and high-impact colour to the border, giving superb flowering performance from mid to late summer.

Matthiola incana ‘Lilac-Lavender’ is a marvellous cut flower strain that reliably produces densely populated panicles on strong, single stems. Long lasting and magnificently fragrant with a sweet and spicy clove scent, this variety is particularly suited for beds and for cutting for the vase.

Matthiola incana 'Sweetheart' with the delicate pale-pink blooms is a variety that is traditionally grown for the floral industry. They can be sown early in spring to give a good summer flower display or can be treated as biennials. Seedlings started inside in October will have the flowers ready for Valentine’s Day.

Matthiola incana 'Avalanche' is a marvellous cut flower strain that reliably produces densely populated panicles on strong, single stems. It produces a high percentage of double flowers that can be selected based on leaf colour. Sow anytime from January to July for flowering April to October.

Matthiola incana 'Apricot' is a variety of the traditional tall stocks that are grown for the floral industry. The plants have large flower heads and grow to a height of 75cm. Extremely fashionable, the delicate peachy-apricot flowers are long lasting and magnificently fragrant with a sweet and spicy clove scent.

Recently introduced to gardens and a hit Chelsea Flower Show, Lysimachia ‘Beaujolais’ feature flower spikes of deep claret which bloom continuously from May to September. The plants give a good effect used in tight drifts through grasses and other perennials. Ideal for cutting, the dark flowers are adorable in bunches.

The more I see of this rather attractive little plant, the more I grow to appreciate it. Now I seem to spot it all over the place, in meadows, woodland, road verges and gardens. The bright yellow fragrant flowers can be seen in blossom from the end of April through until mid September.