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The umbel of flowers is about 3" wide and boasts tiny maroon stars with white frosted edges. The leaves are dark green with silver white flecks and darker accented green veining. Care is similar to care given to carnosa and pubicalyx.
They have attractive succulent leaves is a wide variety of sizes, shapes and patterns. Bright red cup shaped very large flowers, with white beneath corona, pink flowers with a darker star in the center. Propagation: cuttings.
H.australis is a moderately vigorous climbing species. The leaves are thick, succulent and almost round in shape, growing up to 9cm across.
The stems contain a white, milky sap which is poisonous. Flowers occur in clusters of up to 40, each on a long pedicel (stalk) and about 20 mm in diameter. They are fragrant, white in color with deep red markings in the centre.
The species is popular in cultivation in tropical and subtropical areas and is successful in temperate areas if protected from frost (the species will tolerate light frosts). H.australis is also suited to growing in containers and hanging baskets. Grow it in a well-lit area, either indoors or outdoors, with a bit of dappled overhead shade to protect it from the blazing sun. It needs well-drained, though not necessarily especially fertile soil to grow in. Flowering is best if good light is available but the plant will grow in reasonably heavy shade.
Propagate the plant from cuttings taken at any time, using a good propagating mix, can be grown from fresh seed.
Hoya carnosa does best in at least 4 hours of direct sunlight a day, but also can be grown in bright indirect or curtain-filtered sunlight. Night temperatures of 60F to 65F and day temperatures of 70F or higher are optimal. Water freely during flowering but allow the soil to become almost dry between waterings when the plants are resting. Fertilize every 2 months in spring and summer. Do not remove the leafless spurs or stubs, on which new flowers appear every year.
This variety has curious curled leaves. Very slow growing and showy. Hoyas are adaptable plants found everywhere from true rain forests through the slopes of the Himalayas, from semi-arid niches in Australia to damp forests. They range from vines, the most common form, to shrub-like growth. Most are epiphytic. Hoyas are in the family commonly known as milkweeds. They are most closely related to Stapelia, Ceropegia and Dischidia. They were first identified as a new genus by Robert Brown in 1802. There are now several hundred distinct species. Many of these species are in cultivation. Var. Crispa Variegata has variegated leaves.
One of the beautiful miniatures, this hoya has tiny less than 1/2 inch heart-shaped leaves (1 cm), silvery variegated. Some leaves can be cordate, others - obcordate. Very unusual! Its habit is dense with clinging nature, covering the container like a mat. Perfect for use as a ground cover in the pots of larger plants.
Hoya kerrii is named Sweetheart Plant or Sweetheart Hoya because of the heart or valentine shaped leaves. It has thick, succulent type, opposite leaves that are indeed shaped like flat hearts. The leaves are joined to the long, twinning stems (by the sharp tip of the heart-shape leaf) with 1/2 to 1 inch long, 1/8 inch thick petioles (leaf stalks). The stems produce aerial roots which in their native habitat grow into deposits of humus found in crevices and branches of trees as well as absorbing moisture from the air. These aerial roots root easily when inserted into a moist medium making it easy to propagate new plants from stem cuttings. Hoya kerrii also comes in forms with variegated leaves. The flower shape is typical of hoya plants. Small, flat, star-shaped individual flowers are joined like ribs of an open umbrella to form a cluster that is attached to a spur (single stem) called the peduncle. Each small flower is made up of two stars, one on top of the other. The so called bottom star (corolla) is larger in size than the upper centered star which is termed the corona. Hoya kerrii has whitish corolla's and reddish corona's. The flowers are very beautiful, waxy, tough and long lasting. All hoya flowers have wonderful fragrances, some very powerful, others less so.
Hoya kerrii makes an ideal houseplant. It is called the Sweetheart Plant since it has become increasingly popular in recent years. Unusual and quirky "heart" shape leaves appeal to anyone looking for that special novelty gift for their plant enthusiast friend. Most often Sweetheart Plant is sold as a single small leaf in a small pot. We have large developed plants, ready to bloom! You will have something much more beautiful and striking because the unusual shaped leaves on mass, as you might be able to guess, looks like a bush of green hearts! What a great Valentine gift to give someone, and the reason it sometimes goes by the name Valentine Hoya!
The plant is super easy to look after, with only minimal care. It would probably tolerate one good watering a month - it's that hardy. This plant will need a reasonably light room in order to actually grow, although it will still get by even if you pick a shadier spot, you could position it almost anywhere in your home or office.
With its succulent qualities it's quite adapt at storing water for longish periods of time between waterings. This makes it a hardy and undemanding plant for the most part, of course only providing basic care will result in a surviving rather than thriving plant, so where possible wait until the soil has dried out a little and then water again. The Sweetheart Plant isn't bothered about humidity either.
The flowers, like most Hoya's, are stunning as the contrast in the flowering parts are really bold. The all green variety tends to grow more quickly (although it's still slow by most houseplant standards) and is arguably more hardy, but it also comes in a pretty variegated variety. The variegated version of Hoya kerrii can be hard to find.
The leaf is fleshy, of two forms; one form ovate, thick, up to 2" long by 1" wide; the other form oblanceolate, up to 4" long by 2" wide; margins ridged. The flowers are also small, but on close examination are extremely beautiful, like frost crystals. The flower is open about 4 days and has high fragrance. It is one of compact hoya with nice and high fragrance flower and can bloom when it is very young. Best grown in a hanging basket.
Hoya macrophylla is a very unique Hoya that has spectacular trailing foliage and beautiful flowers, it produces clusters of small, pink and white flowers in late spring or early summer.
Hoya latifolia (former macrophylla) albomarginata has very attractive variegated leaves. Once mature, it is a frequent bloomer. It has large, textured leaves whose margins are variegated with patches of creamy white and pink. The new leaves emerge pink from long vining tendrils, and this Hoya sure loves to climb. Like all members of the genus, it has waxy leaves, stems and flowers, which develop in fragrant clusters as the plant reaches maturity. It's easy to grow, with leaves ultimately around 5" long!
The Hoya macrophylla variegata is one of the longest-lived and easiest to maintain houseplants, known for their large waxy leaves, low-maintenance, and visual appeal.
The leaves often include stripes of white, yellow, or pink coloring amidst its deep green shade. This coloring, paired with its waxy leaf texture, makes the plant stand out from other Hoyas.
During the day, the flowers are odorless. At night the flowers fill the air with fragrance when natural pollinators come out. Some claim flower fragrance is that of hyacinth.
Hoya Macrophylla grows naturally in hot and arid climates with infrequent rains. The plant does best when it can dry out completely before enjoying a good soak.