May

Rudbeckia hirta 'Denver Daisy' has large, golden daisies with chocolate brown centres and marks at the base of each petal. Growing to around 75cm (30in) tall, this lovely variety performs well, is exceptionally heat tolerant and blooms for a long time in summer.

The heavy blooming ‘Irish Eyes’ has fantastic bright yellow and gold daisies with emerald green eyes, a far cry from your typical black-eyed Susan. It is easy to grow, great for cutting and offers lots of blooms in the heat of summer. This popular ornamental is at home in wildlife gardens, cutting gardens and mixed borders.

Rudbeckia hirta ‘Large Flowered Mix’ produces a spectacular mix of giant double and semi-double daisy-like flowers that are carried on long stems and are perfect for cutting. In a spectacular mix of warm colours including golden-yellow, orange, bronze and mahogany, they flower profusely all summer long.

Rudbeckia hirta ‘Maya’ is a fabulous award winning variety, bearing beautifully doubled golden daisies with petals so dense they almost look like pincushions. Golden yellow, with a kiss in the centre — almost like a Zinnia in appearance. An outstanding cut flower and wonderful in mixed containers.

Semi-double and double velvety blooms in subtle shades of pale cappuccino, deep caramel, copper and dusty raspberry and everything in between. Rudbeckia 'Sahara' is one of the most spectacular blooms in the late summer border, coming to its peak just as others are starting to fade.

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.

Salvia farinacea ‘Fairy Queen’ is an attractive new variety that bears multiple spikes of bicolour blue and white flowers on dark distinctive flower stems from June to October. With a bushy, compact habit and thick stems. A small white spot on each sapphire blue flower creates the illusion of fairy dust.

Salvia Victoria White is a companion to the more well known Victoria Blue. Flowering in less than four months from seed, it produces its white flowers from summer to autumn. Like all Salvia, it brings butterflies into the garden by the dozen, and makes a wonderful cut or dried flower.

Salvia patens is undoubtedly one of the very best blue flowering plants and one of the truest blues found in nature. 'Patio Deep Blue' is a compact variety that is perfect for containers or for the front of the border, there is little else that can compete with the richness of its colour.

Salvia sclarea var. turkestanica 'Vatican White' is a choice white cultivar that is not that easy to find. A nobly architectural Sage, each of its branched stems is topped with a profusion of blossoms with brilliant white bracts. The flowers are attractive and are boosted in impact by the large petioles that surround them.

This hardy biennial Sage has been grown in almost every botanical sanctuary in human history and has many plus points: it grows well in poor soil resists slugs and other beasties, and doesn’t slump or need staking. It copes well in sun or light shade and the blooms are a magnet for bees and butterflies.

Salvia verticillata 'Purple Fairy Tale' is a spectacular first year flowering perennial. The irresistible deep purple petals gather like raindrops in tiered pools to form whorled flowers. Easy to grow, it will begin to bloom just a couple of months after sowing. The plant flowers abundantly and continues right through to September

Salvia x superba 'Blue Queen' is one of the finest Salvias we know. This plant is a spectacular source of dark, intense colour and narrow, vertical form. Masses of pencil-thin, vibrantly colourful bloom spires, so densely set that they present a solid wall of colour in the border.

The royal sister of ‘Blue Queen’, ‘Rose Queen’ is a wonderful, long-blooming cultivar with slender spires and beautiful mulberry-rose flowers, which open from dark pink buds in early and mid-summer. This tall, easy-to-grow variety with lance-shaped green leaves possess a pleasant aromatic scent.

Boasting the most desirable of deep blue flowers, Scabiosa ‘Oxford Blue’ is a reselected form that stands out from other varieties, it boasts the most desirable of deep lavender-blue flowers. The large, domed, dark centred cushions with contrasting white 'pins', bob atop strong stems. A prodigious bloomer, they will supply you with excellent cut flowers.

One of the longest-flowering and most glamorous of flowers that you can grow from seed, Scabiosa 'Summer Fruits' is a fantastic, fruity blend of delicious colours including raspberry, plum and blackberry. For weekly inclusions in the vase keep the flowers cut to keep the production of flowers right throughout the season.

Scabiosa atropurpurea is one of the longest-flowering and most glamorous of flowers that you can grow from seed. Easy to grow and fast to flower, this invaluable plant will attract many butterflies and bees to the garden and the long, straight stems will supply you with cut flowers throughout the season.

A prodigious bloomer and a tough, hardy garden performer Scabiosa atropurpurea grows quickly and is fast to flower. Rose-pink petals surround a domed, dark centred cushion, this invaluable plant will attract many butterflies and bees to the garden and would look as happy in a wildflower meadow as in a manicured border.

This clump-forming plant produces pleasantly fragrant pincushion flowers when newly opened. Delicate white petals surround a domed, central cushion, and as the flowers mature, tiny white stamens emerge adding yet another beautiful detail. The flowers have the most delicious sweet perfume reminiscent of honey and marshmallows.