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PLANT ENCYCLOPEDIA

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purple velvet plant

purple velvet plant

Gynura aurantiaca

A species of evergreen perennial grown primarily as houseplants, with dark green leaves and stems which are both clothed in bright purple hairs, especially on the undersides. Plants can grow upwards or recline against other objects. Flower heads have yellow, orange or red discs and have a strong odour but they do not produce ray flowers. These appear mostly in winter

Cooper's haworthia

Cooper's haworthia

Haworthia cooperi

A slow-growing succulent forming a low clump of fleshy, pale green eaves up to 5cm long. Leaves may be triangular or rounded in shape and have transparent tips and bristly margins and keels. White to pinkish-white flowers are borne on stems up to 40cm long in spring or summer

Cooper's Haworthia

Cooper's Haworthia

Haworthia cooperi variegata

Haworthia cooperi variegata is a small evergreen succulent forming clumps of fleshy, triangular leaves. The thick leaves have translucent tips with white or pale yellow variegation, giving a jewel-like appearance. It produces delicate white flowers on slender stems in late spring or summer. This slow-growing rosette plant is ideal for indoor containers and bright windowsills.

star cactus

Haworthia retusa

H. retusa is a succulent perennial with rosettes of very thick, triangular, translucent green leaves, with small tubular white flowers in racemes to 50cm tall, in late winter

zebra plant

Haworthiopsis attenuata

A rosette-forming succulent to 12cm tall, with stiffly fleshy, narrowly triangular, dark green leaves; these bear bands of white, warty tubercules on the outer surface, and also scattered on the upper surface. In summer, wiry stems to 40cm long carry tubular white flowers

bunched haworthia

bunched haworthia

Haworthiopsis coarctata

H. coarctata is a clump-forming, columnar, evergreen succulent to around 20cm tall. The dark green leaves are covered with white spots and densely-packed to form a solid column. Long flower stems may appear well above the leaves, in spring and summer, bearing small, white, tubular flowers. If exposed to full sunlight, the leaves may turn a rich purple-red colour

autumn sneezeweed

autumn sneezeweed

Helenium autumnale

An upright, clump-forming perennial up to 1.5m or more high, with branched stems and ovate to lance-shaped green leaves, 10-15cm long, and flowers 5-7cm across with dark brown discs (yellow in the wild) surrounded by bright yellow rays, which bend downwards as the disc-florets open, from late summer to autumn; the flowers provide pollen for bees and nectar for bees and other insects

Common heliotrope

Common heliotrope

Heliotropium arborescens

A bushy, evergreen subshrub or perennial, often grown as an annual, with wrinkled, ovate leaves and dense clusters of small, highly fragrant violet-blue or white flowers held above the foliage from summer to autumn. The plant has a compact, upright habit and a sweet, vanilla-like scent that is particularly noticeable in the evening.

Daylily

Hemerocallis hybrid

Hemerocallis hybrid is a clump-forming herbaceous perennial with a dense mound of arching, strap-shaped green leaves. In summer, tall flower stems (scapes) bear numerous trumpet-shaped blooms in a wide range of colors including yellow, orange, red, pink, and purple. Each flower lasts only one day, but a single plant produces successive blooms over several weeks, creating a continuous display. Its robust growth and vibrant flowers make it a popular choice for borders and naturalistic plantings.

Daylily

Hemerocallis species

Hemerocallis, commonly known as daylily, is a clump-forming herbaceous perennial with strap-shaped, arching green leaves. From early to late summer it produces large, funnel-shaped flowers in a wide range of colours including yellow, orange, red, pink and purple. Each bloom lasts only one day, but plants produce numerous buds over a long flowering period, giving an extended display of colour. Daylilies are valued for their vibrant blooms, ease of cultivation and ability to naturalise in borders.

Daylily

Hemerocallis spp.

Hemerocallis, commonly known as daylilies, are clump-forming herbaceous perennials with arching, strap-shaped leaves. They produce showy, funnel-shaped flowers in a wide range of colors, typically borne on tall scapes above the foliage. Each flower lasts only one day, but plants produce successive blooms over several weeks. The genus offers excellent ornamental value for borders and mass plantings.

coral bells

Heuchera sanguinea

H. sanguinea is a clump-forming, semi-evergreenperennial to around 30cm with rounded, shallowly lobed, dark green leaves with pale green marbling. In summer bears small, red,tubularflowers in open sprays on fine, upright stems

Coral Bells

Heuchera spp.

Heuchera, commonly known as Coral Bells, is a clump-forming perennial with rounded to heart-shaped leaves that exhibit a stunning range of colors, including green, purple, bronze, and silver. In late spring to early summer, it produces delicate, bell-shaped flowers on slender stems above the foliage, typically in shades of pink, red, or white. The compact habit and vibrant foliage make it a versatile choice for borders, edging, and ground cover, providing year-round interest in mild climates.

hairy alum root

hairy alum root

Heuchera villosa

A clump-forming perennial to about 40cm high, forming a mound of lobed, softly hairy mid-green leaves. Flowers in late summer, producing loose sprays of small, bell-shaped, white or pink flowers on slender stems above the foliage

Hibiscus Tree

Hibiscus tiliaceus

Hibiscus tiliaceus is a fast-growing evergreen tree or large shrub, typically reaching 4–10 m in height. It has large, heart-shaped leaves with a velvety texture and prominent veins. The flowers are bright yellow with a deep maroon centre, fading to orange as they age, and bloom throughout summer. Its spreading crown and tolerance to coastal conditions make it an excellent choice for seaside gardens and screening.

Hoya

Hoya callistophylla

Hoya callistophylla is an evergreen climbing epiphyte with striking dark green leaves prominently marked by lighter veins. The leaves are succulent, ovate to lanceolate, and grow along twining stems. In summer, it produces clusters of small star-shaped flowers that are creamy white with a reddish-purple centre. The flowers are fragrant, especially at night, and the plant is prized for both its ornamental foliage and blooms. It is well suited to hanging baskets or trellises in bright indoor conditions.

Krimson Queen Hoya

Krimson Queen Hoya

Hoya carnosa 'Krimson Queen'

Hoya carnosa 'Krimson Queen' is a striking evergreen climber with variegated leaves that feature creamy-white margins and a green center, often tinged with pink on new growth. It produces clusters of star-shaped, waxy flowers that are white with a pink center, typically in summer. The plant has a twining habit and is well-suited for indoor cultivation in a bright spot. It is valued for both its ornamental foliage and fragrant blooms.

Hoya kerrii

Hoya kerrii

A slow-growing, evergreen vine with woody stems, bearing stiff, fleshy, heart-shaped leaves to 6cm wide. In summer it produces domed clusters of fragrant white flowers with purple centres

Variegated Hoya

Variegated Hoya

Hoya macrophylla

Hoya macrophylla is an evergreen epiphytic climber grown for its large, fleshy, glossy leaves and clusters of waxy, star-shaped flowers. The variegated form, often sold as Variegated Hoya, has cream to yellow markings along the leaf margins or in splashes. It produces pendent umbels of pale pink to white flowers, usually with a contrasting darker center, mainly in spring and summer. Plants climb or trail from a woody base and are ideal for hanging baskets or a support in a bright indoor position. The ornamental foliage remains attractive year-round.

common hyacinth

common hyacinth

Hyacinthus orientalis

A bulbous perennial to around 30cm high, with strap-shaped, channeled, glossy leaves. In spring, produces a dense cylindrical spike of fragrant, waxy, tubular bell-shaped flowers, pale violet at the base and near white above

North American wild hydrangea

North American wild hydrangea

Hydrangea arborescens

A species of small to medium deciduous shrub with dark green foliage, strong sturdy stems and large snowball-shaped white flowers appearing in mid-summer

paniculate hydrangea

paniculate hydrangea

Hydrangea paniculata

H. paniculata is a deciduous woody plant with toothed, mid to dark green leaves in opposite pairs or clusters of 3, and flowerheads in large, conical panicles, produced in late summer and early autumn, made up of showy, pinkish-white sterile flowers scattered amongst the smaller creamy-white fertile flowers

Dollarweed

Hydrocotyle verticillata

Hydrocotyle verticillata forms low, dense mats of rounded, peltate, bright green leaves that resemble small coins or shields. Slender petioles hold the leaves above mud, shallow water, or an emersed aquatic basket; in deeper water the leaves may float. Tiny greenish-white flowers are produced in small axillary whorls in summer, but the ornamental value is mainly foliar. Creeping stolons root freely at nodes and allow the plant to spread rapidly across wet ground. It is a versatile water-margin plant, suitable for bog gardens, pond shelves and planted wet containers.

flowkwort

Hydrocotyle vulgaris

A creeping, moisture-loving, low-growing perennial forming a mat of round, shallow-toothed leaves, 1-5cm wide, held erect on short stems attached to the leaf centres. Tiny, inconspicuous flower clusters appear in late spring and summer