Royal Horticultural Society in the context of "Tetrastigma voinierianum"

William Forsyth (1737 – 25 July 1804) was a Scottish botanist. He was a royal head gardener and a founding member of the Royal Horticultural Society. A genus of flowering plants, Forsythia, is named in his honour.

Crassula rupestris, called buttons on a string, is a species of Crassula native to Namibia and to the Cape Provinces of South Africa. It has gained the Royal Horticultural Society's Award of Garden Merit. It is also called bead vine, necklace vine, and rosary vine.

Dimorphotheca jucunda, the delightful African daisy, is a species of flowering plant in the family Asteraceae. It is native to South Africa, Lesotho and Eswatini, and introduced to Ireland and Tasmania. As its synonym Osteospermum jucundum, it and two of its cultivars, 'Blackthorn Seedling' and 'Langtrees' have gained the Royal Horticultural Society's Award of Garden Merit.

The Italian stone pine, botanical name Pinus pinea, also known as the Mediterranean stone pine is a tree from the pine family, Pinaceae. The tree is native to the Mediterranean region, occurring in Southern Europe and the Levant. The species was introduced into North Africa millennia ago, and is also naturalized in the Canary Islands, South Africa and New South Wales.

Stone pines have been used and cultivated for their edible pine nuts since prehistoric times. They are widespread in horticultural cultivation as ornamental trees, planted in gardens and parks around the world. This plant has gained the Royal Horticultural Society's Award of Garden Merit.

The Award of Garden Merit (AGM) is an award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK growing conditions.

It includes the full range of cultivated plants, from annuals, biennials and perennials to shrubs and trees. It covers plants grown for specific purposes—such as vegetable crops, fruit, hedging, topiary, groundcover, summer bedding, houseplants, etc. It tests characteristics such as robustness, hardiness, longevity, flowering/fruiting abundance and quality, usefulness, and ease of cultivation. It pays particular attention to a plant's ability to survive and thrive in challenging conditions such as wind and frost.

Aconitum (/ˌækəˈnaɪtəm/), also known as aconite, monkshood, wolfsbane, leopard's bane, devil's helmet, or blue rocket, is a genus of over 250 species of flowering plants belonging to the family Ranunculaceae. These herbaceous, frequently toxic perennial plants are chiefly native to the mountainous parts of the Northern Hemisphere in North America, Europe, and Asia, growing in the moisture-retentive but well-draining soils of mountain meadows.

Most Aconitum species are extremely poisonous and must be handled very carefully. Several Aconitum hybrids, such as the Arendsii form of Aconitum carmichaelii, have won gardening awards—such as the Royal Horticultural Society's Award of Garden Merit. Some are used by florists.

Morning glory (also written as morning-glory) is the common name for over 1,000 species of flowering plants in the family Convolvulaceae, whose taxonomy and systematics remain in flux. These species are distributed across numerous genera, including:

• Argyreia
• Astripomoea
• Calystegia
• Convolvulus
• Ipomoea (the largest genus)
• Lepistemon
• Merremia
• Operculina
• Rivea
• Stictocardia

Ipomoea tricolor, commonly known simply as "morning glory", is the archetypical species for the group and is renowned for its many beautiful varieties, such as 'Heavenly Blue', 'Flying Saucers', and 'Pearly Gates'.

The tayberry (Rubus fruticosus × R. idaeus) is a cultivated shrub in the genus Rubus of the family Rosaceae patented in 1979 as a cross between a blackberry and a red raspberry, and named after the River Tay in Scotland.

The fruit is sweeter, much larger, and more aromatic than that of the loganberry, itself a blackberry and red raspberry cross. The tayberry is grown for its edible fruits which can be eaten raw or cooked, but the fruit do not pick easily by hand and cannot be machine harvested, so they have not become a commercially grown berry crop. As a domestic crop, this plant has gained the Royal Horticultural Society's Award of Garden Merit.

Howea forsteriana, the Kentia palm, thatch palm or palm court palm, is a species of flowering plant in the palm family, Arecaceae, endemic to Lord Howe Island in Australia. It is also widely grown on Norfolk Island. It is a relatively slow-growing palm, eventually growing up to 10 m (33 ft) tall by 6 m (20 ft) wide. Its fronds can reach 3 m (10 ft) long. The palm gets its common name from the capital of Lord Howe Island, Kentia, and the genus name, Howea, from the island itself. The species name forsteriana is after Johann Reinhold Forster and Georg Forster, father and son, who accompanied Captain Cook as naturalists on his second voyage to the Pacific in 1772–1775. The seeds require six years to mature.

The species is considered vulnerable by the World Conservation Union. It is cultivated on Lord Howe Island by collecting wild seeds and germinating them for export worldwide as an ornamental garden or houseplant. The trade in the seeds and seedlings is tightly regulated. This plant has gained the Royal Horticultural Society's Award of Garden Merit.