May

Also known as Peony poppies, Papaver paeoniflorum producing a summer-long succession of fascinating, heavily doubled, large flowers with lovely crinkled petals. Their spectacular blooms, in a multitude of colours are one of the easiest ways to add a bit of architecture and a lot of colour to your garden.

Perfect for gardeners in pursuit of an easy-to-grow large flowering plant, with thick stalks and broad lettuce like leaves, Papaver 'Double Cream' has fascinating, large, fully double, cream flowers with lovely crinkled petals. Sown in early spring, the plants grow quickly and the first flowers appear in early July. One of the easiest ways to add a bit of architecture to your garden.

Papaver 'Black Peony' has fascinating, large, fully double, dark purple-maroon, almost black flowers, with lovely crinkled petals. When the flowers do burst, overnight, from their casings, the gardener is treated to some of the most dramatic flowers in the plant kingdom.

A range of delicate antique pinks, many with a cream-white base, suffused with rose, pinks and purple hues, beautifully offset by lush, blue-green foliage. Papaver paeoniflorum 'Antique Shades' is not a new introduction, but on old, historical variety of the type that were grown in cottage gardens and monasteries several centuries ago.

Oriental Poppy 'Haremstraum' is a colourful formula mix of the newer hybrids. Indispensable in the early summer garden, they deliver before most perennials have even thought about budding up. Throughout May and June, they break out their large sumptuous coloured, crumpled petals from tight fisted buds.

Papaver orientale 'Brilliant' exhibits immense scarlet red satiny blooms, each boasting intricately decorated, deep purple-black hearts. A good border plant, as well as an eye catching cut flower, they are very long-lived and virtually care-free, these undemanding plants provide a real spectacle year after year.

The Iceland poppies have large, luscious petals in an array of shades.The single papery, lightly fragrant blossoms flowers unwrinkle their petals into a wide-spreading saucer shape 3 to 4 inches across. Flowering early in summer they produce dazzling splashes of colour when planted en masse.

Recently renamed Papaver cambricum, formerly known as Meconopsis and often simply called 'The Welsh Poppy', is very easy to grow and is reliably perennial. The delicate cup-shaped, golden-yellow flowers are borne in abundance from late spring to early autumn.

The pure bloom power of Nicotiana Crimson Bedder makes it a winner for every garden. The well branched and bushy plants grow to around 50cm tall. These free-flowering little gems will bloom from early summer to autumn, every inch packed with crimson blooms.

Nicotiana alata 'Tinkerbells' is a stunningly colourful plant for borders and containers. The dwarf, bushy habit and the hybrid vigour combine to produce a carpet of colour. To get the most enjoyment from the sweet evening fragrance, plant near patios, decks, or under windows to best enjoy their sweet perfume.

Recognised as having the largest flowers of all the nepetas and only one with white flowers, Nepeta subsessilis 'Snow Panther' flowers during the first year and can be grown as an annual or as a flowering perennial. This award winning variety is extremely attractive to bees and butterflies they are also excellent for containers.

Nepeta subsessilis 'Pink Panther' is the pink form of large-flowered Nepeta which is grown from seed and flowers during the first year. It can be grown as an annual or as a flowering perennial. Flowering from June until the end of September, they work well as an informal low hedge or mixed in the border with other annuals or perennials.

Nepeta ‘Dark Blue Panther’ is the dark blue flowered variety and sister to 'Pink Panther' and the beautiful white 'Snow' Panther. This award winning variety starts to flower just 15 weeks after sowing and can be can be grown as an annual or as a flowering perennial.

Nepeta grandiflora is one of the best garden plants in this family. 'Border Ballet' is a striking new catmint, lusher than true catnip, with dark green leaves. It flowers in shades of blue and pink in perfect harmony. This easy to sow and grow perennial flowers in the first year of sowing.

Veteran gardeners are probably already aware of nepeta’s versatility in the garden. From its popular partnering with roses to the softening effect it has on hard edges. Nepeta is an ideal perennial for new gardeners and, of course, cats adore it.

Monarda fistulosa, also known as Bergamot is famed for its medicinal qualities. While in the perennial border these lovely plants produce a mass of mauve-purple blooms (even in their first year from an early sowing) and have uniquely scented foliage. Highly attractive to bees and butterflies.

Monarda 'Panorama Red Shades' is the first separate colour available from seed. This foolproof plant is trouble-free and a joy for the garden and vase. They bloom profusely with very distinctive flower-heads, each plant bearing up to 20 long stems and are as long-lasting as they are dramatic.

'Panorama' must be rated a marvelous achievement in the perfection of the whorls of flowers and the brilliance of the colours. In many shades of scarlet, bright red, pink, salmon and crimson, each plant bears up to 20 long stems. They are as long-lasting as they are dramatic and excellent for cutting.