动态第580页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年09月25日

Scientific Name Ranunculus peltatus Schrank [图片]Common Names Pond Water Crowfoot Synonyms Batrachium dichotomum, Batrachium elongatum, Batrachium floribundum, Batrachium langei, Batrachium peltatum, Batrachium pseudofluitans, Batrachium triphyllos, Batrachium truncatum, Ranunculus capillaceus, Ranunculus carinatus, Ranunculus floribundus, Ranunculus triphyllos Scientific Classification Family: Ranunculaceae Subfamily: Ranunculoideae Tribe: Ranunculeae Genus: Ranunculus [图片]Flower Color: White and yellow Bloom Time: June to September Description Ranunculus peltatus is a herbaceous perennial or sometimes annual plant. It has two different leaf types, broad rounded floating leaves, up to 2 inches (5 cm) in diameter with three to seven shallow lobes, and finely divided thread-like submerged leaves. The flowers are white with a yellow center, up to 0.8 inch (2 cm) in diameter, with five petals. [图片]How to Grow and Care Growing Ranunculus flowers starts with planted roots or tubers. Often called Ranunculus bulbs, tubers are different but have similar structures and purposes to the more common bulb. Plant the bulbs or tubers in fall for a glorious spring display. Growing Ranunculus flowers requires well-drained soil and full sun for best results. Soak the tubers and then plant then with the roots or fingers pointed downward at a depth of 1 to 2 inches (2.5 to 5 cm), depending on the size of the bulbs. It is an easy flower to grow. Care of Ranunculus to ensure yearly displays may require that you pull out the tubers at the end of the season. Allow the foliage to almost completely die back and then dig out the tubers. Lay them in a cool, dry place to evaporate all the moisture from the bulbs. Store the tubers in a dark location until spring and then start them indoors in pots. Replant outside when all danger of frost is passed and the first true leaves are evident. Origin Native to Europe, southwestern Asia and northern Africa.

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2017年09月25日

Scientific Name Ranunculus acris L. [图片]Common Names Meadow Buttercup, Tall Buttercup, Common Buttercup, Giant Buttercup Synonyms Ranunculus acris var. acris, Ranunculus acris f. acris, Ranunculastrum acre, Ranunculastrum boraeanum, Ranunculastrum nemorivagum, Ranunculastrum vulgatum Scientific Classification Family: Ranunculaceae Subfamily: Ranunculoideae Tribe: Ranunculeae Genus: Ranunculus [图片]Flower Color: Yellow Bloom Time: May to July Description Ranunculus acris is variable in appearance across the world. It is a somewhat hairy plant that has ascending, ungrooved flowing stems bearing glossy yellow flowers up to 1 inch (2.5 cm) across. There are five overlapping petals borne above 5 green sepals that soon turn yellow as the flower matures. It has numerous stamens inserted below the ovary. The leaves are compound, with 3 lobed leaflets. Unlike Ranunculus repens, the terminal leaflet is sessile. As with other members of the genus, the numerous seeds are borne as achenes. Hardiness USDA hardiness zone 4a to 8b: from −30 °F (−34.4 °C) to 20 °F (−6.7 °C). [图片]How to Grow and Care Growing Ranunculus flowers starts with planted roots or tubers. Often called Ranunculus bulbs, tubers are different but have similar structures and purposes to the more common bulb. Plant the bulbs or tubers in fall for a glorious spring display. Growing Ranunculus flowers requires well-drained soil and full sun for best results. Soak the tubers and then plant then with the roots or fingers pointed downward at a depth of 1 to 2 inches (2.5 to 5 cm), depending on the size of the bulbs. It is an easy flower to grow. Care of Ranunculus to ensure yearly displays may require that you pull out the tubers at the end of the season. Allow the foliage to almost completely die back and then dig out the tubers. Lay them in a cool, dry place to evaporate all the moisture from the bulbs. Store the tubers in a dark location until spring and then start them indoors in pots. Replant outside when all danger of frost is passed and the first true leaves are evident. Origin It is one of the more common buttercups across Europe and temperate Eurasia.

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2017年09月25日

Scientific Name Rafflesia kerrii Meijer [图片]Scientific Classification Family: Rafflesiaceae Genus: Rafflesia [图片]Flower Color: Red Bloom Time: During the dry season Description Rafflesia kerrii is a parasite to the wild grapes of the genus Tetrastigma, but only the flowers are visible. Small buds appear along the trunk and roots of the host, which after 9 months open the giant flowers. After just one week the flower dies. It seems to be flowering seasonally, as flowers are only reported during the dry season, from January to March, and more rarely till July. The red flowers is up to 3 feet (90 cm) and smell awfully of rotten meat to attract flies for pollination. Hardiness USDA hardiness zone 13a to 13b: from 60 °F (+15.6 °C) to 70 °F (21.1 °C). [图片]How to Grow and Care The Rafflesia is in serious danger of extinction as the rain forest is burned and cleared for crop production and urban growth. The buds are also harvested and sold because locals believe they have medicinal properties if consumed. The plant has never been cultivated in captivity and it only grows on the tetrastigma vine, so its survival is seriously threatened. Pollination is rare because most locations contain only male flowers or female flowers. In order for pollination to occur, the fly must land on the male flower and then take the pollen to the female flower. If pollination occurs, the flower produces a globular, smooth-skinned fruit measuring up to 5 inches (13 cm) in diameter. It contains thousands of seeds. Birds and squirrels enjoy eating the fruit and help to spread the Rafflesia seeds through their eliminations. Origin Native to the rainforest of southern Thailand and peninsular Malaysia, with the most famous population in the Khao Sok National Park.

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2017年09月25日

Scientific Name Rafflesia arnoldii R. Br. [图片]Common Names Corpse Flower Synonyms Rafflesia titan Scientific Classification Family: Rafflesiaceae Genus: Rafflesia [图片]Flower Color: Reddish-brown Bloom Time: Flowers can appear at any time, though blooms tend to be slightly more frequent between November and January Description Rafflesia arnoldii is a species of flowering plant noted for producing the largest individual flower on earth. The flower grows up to 3.3 feet (1 m) in diameter. Flowers emerge from very large, cabbage-like, maroon or magenta buds up to 12 inches (30 cm) wide. Despite being plants, they do not photosynthesize, have no roots, have no leaves, and don’t at all seem like plants. It can only be seen outside the host plant when it is ready to reproduce. Perhaps the only part that is identifiable as distinctly plant-like are the flowers, though even these are unusual since they attain massive proportions, have a reddish-brown coloration, and stink of rotting flesh. This scent attracts insects such as flies which then pollinate the rare plant. [图片]How to Grow and Care The Rafflesia is in serious danger of extinction as the rain forest is burned and cleared for crop production and urban growth. The buds are also harvested and sold because locals believe they have medicinal properties if consumed. The plant has never been cultivated in captivity and it only grows on the tetrastigma vine, so its survival is seriously threatened. Pollination is rare because most locations contain only male flowers or female flowers. In order for pollination to occur, the fly must land on the male flower and then take the pollen to the female flower. If pollination occurs, the flower produces a globular, smooth-skinned fruit measuring up to 5 inches (13 cm) in diameter. It contains thousands of seeds. Birds and squirrels enjoy eating the fruit and help to spread the Rafflesia seeds through their eliminations. Origin It is endemic to the rainforests of Sumatra and possibly Borneo.

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2017年09月25日

Scientific Name Ipomoea tricolor Cav. [图片]Common Names Morning Glory, Grannyvine Synonyms Convolvulus rubrocaeruleus, Ipomoea hookeri, Ipomoea rubrocaerulea, Pharbitis rubrocaeruleus, Quamoclit mutica Scientific Classification Family: Convolvulaceae Tribe: Ipomoeeae Genus: Ipomoea [图片]Flower Color: Blue Bloom Time: Late spring to early fall Description Ipomoea tricolor is an herbaceous annual or perennial, twining liana growing, up to 13 feet (4 m) tall. The leaves are spirally arranged, up to 3 inches (7.5 cm) long with a up to 2.4 inches (6 cm) long petiole. The flowers are trumpet-shaped, up to 4 inches (10 cm) in diameter, most commonly blue with a white to golden yellow center. They open in the morning and last for one day. [图片]How to Grow and Care Most species have spectacular, colorful flowers and are often grown as ornamentals, and a number of cultivars have been developed. In the garden, Ipomoeas need moderately fertile, well-drained soil in full sun. Provide shelter from wind. Prune climbing species in spring. Under glass, provide full light with protection from the hottest sun. Water freely and fertilize monthly during the growing season, but water sparingly in winter. Climbers and trailing species need support. Chip seeds with a knife, scrape with sandpaper, or soak in water for 24 hours before sowing at 64° F (18° C) in spring. Root softwood cuttings of perennials or shrubs in spring or summer, or take semi-ripe cuttings in summer. White blister, rust, fungal leaf spots, stem rot, thread blight, charcoal rot, and wilt can occur. Origin Native to tropical areas of Mexico, Central and South America.

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2017年09月25日

Scientific Name Ipomoea bolusiana Schinz [图片]Synonyms Ipomoea angustisecta, Ipomoea mesenterioides, Ipomoea praetermissa, Ipomoea rubro-viridis, Ipomoea simplex Scientific Classification Family: Convolvulaceae Tribe: Ipomoeeae Genus: Ipomoea [图片]Flower Color: Mauve or magenta-pink Bloom Time: Late spring to early fall Description Ipomoea bolusiana is a perennial dwarf shrub, growing form a thick tuberous rootstock, up to 8 inches (20 cm) in diameter. One or several stems, erect or prostrate, hairless, slender, woody at the base. The green leaves are narrow, widely spaced, up to 2.8 inches (7 cm) long. Flowers are funnel-shaped, borne near base of the stem, mauve or magenta-pink in color, darker in the centers and up to 2.8 inches (7 cm) long. [图片]How to Grow and Care Most species have spectacular, colorful flowers and are often grown as ornamentals, and a number of cultivars have been developed. In the garden, Ipomoeas need moderately fertile, well-drained soil in full sun. Provide shelter from wind. Prune climbing species in spring. Under glass, provide full light with protection from the hottest sun. Water freely and fertilize monthly during the growing season, but water sparingly in winter. Climbers and trailing species need support. Chip seeds with a knife, scrape with sandpaper, or soak in water for 24 hours before sowing at 64° F (18° C) in spring. Root softwood cuttings of perennials or shrubs in spring or summer, or take semi-ripe cuttings in summer. White blister, rust, fungal leaf spots, stem rot, thread blight, charcoal rot, and wilt can occur. Origin Native to Madagascar and South Africa.

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2017年09月25日

Scientific Name Aster tataricus L.f. [图片]Common Names Tatarian Aster, Tartarian Aster, Tatarian Daisy, Tatarinow’s Aster Synonyms Aster fauriei, Aster nakaii, Aster rhomboideus, Aster tataricus var. tataricus Scientific Classification Family: Asteraceae Tribe: Astereae Genus: Aster [图片]Flower Color: Deep lavender to blue rays and yellow centers Bloom Time: Autumn Description Aster tataricus is an impressive, stately perennial with a flowering height of up to 6 feet (1.8 m). Distinctive paddle-shaped, lower leaves are up to 24 inches (60 cm) long and up to 6 inches (15 cm) wide, but leaves are significantly smaller in size higher up on the plant. Small but abundant flowers, up to 1 inch (2.5 cm) across, with deep lavender to blue rays and yellow centers appear in flat-topped clusters in autumn. A late blooming aster that still looks fresh at time of first frost. [图片]How to Grow and Care Divide mature plants in spring, just as the new shoots begin to grow. This should be done every few years to avoid crowding of plants. As with many other flowering plants, dead head (cut back spent flowers) to make room for newer blossoms. This will extend the health and flowering of your plants. Be sure to dead head early on in the blooming season. Blooming will be reduced if done too late. This will also restrain unwanted reseeding which will cause plant overcrowding. Remember, Asters are prone to mildew so be careful to plant them in areas with good circulation and good sun exposure. As with other flowering plants, do not allow water to saturate leaves. Be sure to water at the plant’s roots to prevent mildew and mold. Drip irrigation and utilization of a soaker hose work very well in watering these plants. Origin Native to southern Siberia, northern China, Mongolia, Korea and Japan, where it grows in meadows and wetlands.

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2017年09月25日

Scientific Name Aster amellus L. [图片]Common Names Italian Aster, Italian Starwort, European Michaelmas Daisy Synonyms Amellus officinalis, Amellus vulgaris, Aster acmellus, Aster albus, Aster albus var. albus, Aster amelloides, Aster amellus var. amellus, Aster amellus subsp. amellus, Aster atticus, Aster collinus, Aster elegans, Aster noeanus, Aster ottomanum, Aster pseudamellus, Aster pseudoamellus, Aster purpureus, Aster scepusiensis, Aster tinctorius, Aster trinervius, Diplopappus asperrimus, Diplopappus laxus, Galatella asperrima Scientific Classification Family: Asteraceae Tribe: Astereae Genus: Aster [图片]Flower Color: Lilac Bloom Time: July through October Description Aster amellus a perennial herbaceous plant up to 20 inches (50 cm) tall. The stem is erect and branched, the leaves are dark green. The basal leaves are obovate and petiolated, the cauline ones are alternate and sessile, increasingly narrower and lanceolate. The flowers are lilac. The flowering period extends from July through October. The seeds are an achene that ripens in October. [图片]How to Grow and Care Divide mature plants in spring, just as the new shoots begin to grow. This should be done every few years to avoid crowding of plants. As with many other flowering plants, dead head (cut back spent flowers) to make room for newer blossoms. This will extend the health and flowering of your plants. Be sure to dead head early on in the blooming season. Blooming will be reduced if done too late. This will also restrain unwanted reseeding which will cause plant overcrowding. Remember, Asters are prone to mildew so be careful to plant them in areas with good circulation and good sun exposure. As with other flowering plants, do not allow water to saturate leaves. Be sure to water at the plant’s roots to prevent mildew and mold. Drip irrigation and utilization of a soaker hose work very well in watering these plants. Origin Native to Europe.

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2017年09月25日

Scientific Name Asphodelus fistulosus L. [图片]Common Names Onionweed, Wild Onion, Onion-leafed Asphodel, Pink Asphodel, Hollow-stemmed Asphodel Synonyms Asphodelus fistulosus subsp. fistulosus, Asphodelus fistulosus var. fistulosus, Anthericum unilineatum, Asphodeloides ramosa, Asphodelus davei, Asphodelus dunensis, Asphodelus intermedius, Asphodelus parviflorus, Glyphosperma palmeri, Ophioprason fistulosum, Verinea fistulosa Scientific Classification Family: Xanthorrhoeaceae Subfamily: Asphodeloideae Genus: Asphodelus [图片]Flower Color: White or very pale pink with a neat central longitudinal stripe of brown to reddish-purple Bloom Time: Winter to spring Description Asphodelus fistulosus is an annual or short-lived perennial herb growing a hollow stem up to 28 inches (70 cm) tall. The root system has a series of tuber-like parts at the base of the stem. The plant takes the form of a large tuft of onion-like rounded hollow leaves up to 12 inches (30 cm) long. The inflorescence is a panicle with widely spaced flowers. Each flower is up to 0.5 inch (1.2 cm) wide with six tepals which are generally white or very pale pink with a neat central longitudinal stripe of brown to reddish-purple. The flowers are diurnal, closing at night and in overcast or low-light weather conditions. The fruit is a rounded capsule containing six seeds. [图片]How to Grow and Care Grow Asphodels in moderately fertile, well-drained soil in full sun. Does not tolerate heavy, poorly-drained soil. Irrigate occasionally to very little in coastal gardens. Considered hardy to USDA zone 6. It tolerates temperature down to 14ºF (-10ºC). Great as a border or accent plant. Propagate Asphodels by seed, sown in pots in a cold frame in spring or propagate by division after flowering. Although you can cut back flower stems after flowering the seedheads are attractive so can be left. Origin Native to the Mediterranean region.

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2017年09月25日

Scientific Name Asphodelus albus Mill. [图片]Common Names White Asphodel, Gamón-Blanco (Spanish), Afodill (Swedish) Synonyms Asphodelus albus subsp. albus, Asphodelus sphaerocarpus, Asphodelus deseglisei, Asphodelus deseglisei, Asphodelus ramosus subsp. albus, Asphodelus ramosus var. albus, Asphodelus simplex Scientific Classification Family: Xanthorrhoeaceae Subfamily: Asphodeloideae Genus: Asphodelus [图片]Flower Color: White Bloom Time: April to June Description Asphodelus albus is a herbaceous perennial plant, up to 3.9 feet (1.2 m) tall. The plain stem is supported by fleshy, thickened roots. The leaves, which originate from the base of the stem, are gutter-shaped and covered by a waxy coating, up 28 inches (70 cm) long and up to 0.87 inch (22 mm) wide. The white hermaphroditic flowers are funnel-shaped, up to 1.6 inches (4 cm) in diameter, with six elongated petals. The flowering period extends from April through June. The egg-shaped yellow-green seed capsules are up to 0.39 inches (10 mm) long. [图片]How to Grow and Care Grow Asphodels in moderately fertile, well-drained soil in full sun. Does not tolerate heavy, poorly-drained soil. Irrigate occasionally to very little in coastal gardens. Considered hardy to USDA zone 6. It tolerates temperature down to 14ºF (-10ºC). Great as a border or accent plant. Propagate Asphodels by seed, sown in pots in a cold frame in spring or propagate by division after flowering. Although you can cut back flower stems after flowering the seedheads are attractive so can be left. Origin Native to middle Europe and the shores of the Mediterranean.

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