动态第478页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年10月02日

Scientific Name Euphorbia ingens E. Mey. ex Boiss. Common Names Candelabra Tree, Common Tree Euphorbia, Cactus Euphorbia, Cactus Spurge, Naboom (African), Kaktus-Wolfsmilch (German)[图片]Synonyms Euphorbia similis Scientific Classification Family: Euphorbiaceae Subfamily: Euphorbioideae Tribe: Euphorbieae Subtribe: Euphorbiinae Genus: Euphorbia[图片]Description Euphorbia ingens is an upright, succulent tree, up to 40 feet (12 m) tall, with a dark green crown which is well rounded and often shaped like a hot-air balloon. The branches are segmented with spines running along the ridges of the segments. It produces small, greenish yellow flowers on the ridges of the topmost segment of every branch from autumn to winter. The fruit is a round 3-lobed capsule, turns red to purple when ripening.[图片]How to Grow and Care Euphorbias are very easy to care for. They require a little pampering to become established, but once they are, they are self-sufficient. In fact, more die from too much care and watering than from neglect. Euphorbias need well-draining soil and lots of sunlight. They are not particular about soil pH, but they cannot tolerant wet soil. Unlike most succulents, Euphorbia does not handle long periods of drought well. It may need weekly watering during the summer.[图片]Euphorbia can be grown from seed, but they can be difficult to germinate (or even find). It is usually propagated by cuttings. This can be tricky, because of the exuding sap.

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2017年10月02日

Scientific Name Conophytum wettsteinii (Berger) N.E.Br. Common Names Cone Plants, Dumplings, Button Plants Synonyms Mesembryanthemum wettsteinii (basionym), Conophytum wettsteinii var. wettsteinii, Conophytum brevipes, Conophytum circumpunctatum[图片]Scientific Classification Family: Aizoaceae Subfamily: Ruschioideae Tribe: Ruschieae Genus: Conophytum[图片]Description Conophytum wettsteinii has a broad top (up to 1 inch/2.5 cm wide) and narrowed base. Individual plants seem circular from above, with fissures up to 0.16 inch (4 mm) long. The plant has a green to blue-green color with a spotted, smooth epidermis which may appear glossy. It flowers only in autumn, with scentless flowers opening during the day. Flowers are short and wide, ranging in color from magenta to pale pink or rarely white.[图片]How to Grow and Care Conophytums are usually grown in dish gardens where they spread slowly but make good ornamental plants for window gardening. They also do well in rockeries where they can be grown in crevices.[图片]The Conophytum vegetate during the winter season. They must then be kept dry during hot, gradually wet upon autumn arrival: the moisture stimulate the release of new root hairs and the plant will grow for the entire winter season, foliar issuing new pairs from inside the existing ones. Flowering usually occurs in autumn and the color of the flowers is extremely variable from species to species.

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2017年10月02日

Scientific Name Conophytum calculus (A. Berger) N. E. Br. Common Names Marble Buttons, Cone Plants, Dumplings, Button Plants, Living Pebbles Synonyms Mesembryanthemum calculus (basionym), Conophytum calculus var. calculus, Conophytum komkansicum[图片]Scientific Classification Family: Aizoaceae Subfamily: Ruschioideae Tribe: Ruschieae Genus: Conophytum[图片]Description Conophytum calculus is a small, but very tough, low growing, stemless succulent with individual rounded “leaves” (fused together into one body) that multiply with age and cluster together to form a dome-shaped cushion. The spherically-shaped leaf bodies are completely smooth and hairless, characteristically opaque (non-transparent and non-glossy) and have a chalky-green to pale yellowish green color. The leaf bodies are always without any spot or detail and up to 1.2 inches (3 cm) in diameter. New leaves are formed inside the existing ones and when, after a year, the leaf body starts to die, a new one emerges from inside. The old leaf becomes a thin, dry, and smooth, beige colored sheath, sometimes turning black, which persists on the plant. It flowers in autumn and has spicy, clove-scented, golden yellow to dark orange flowers which are nocturnal. They only open at night.[图片]How to Grow and Care Conophytums are usually grown in dish gardens where they spread slowly but make good ornamental plants for window gardening. They also do well in rockeries where they can be grown in crevices.[图片]The Conophytum vegetate during the winter season. They must then be kept dry during hot, gradually wet upon autumn arrival: the moisture stimulate the release of new root hairs and the plant will grow for the entire winter season, foliar issuing new pairs from inside the existing ones. Flowering usually occurs in autumn and the color of the flowers is extremely variable from species to species.

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2017年10月02日

Scientific Name Pinguicula moranensis Kunth Common Names Butterwort Synonyms Pinguicula moranensis var. moranensis, Pinguicula bakeriana, Pinguicula caudata, Pinguicula flos-mulionis, Pinguicula potosiensis, Pinguicula rectifolia, Pinguicula rosei, Pinguicula sodalium[图片]Scientific Classification Family: Lentibulariaceae Genus: Pinguicula[图片]Description Pinguicula moranensis is a perennial rosette-forming insectivorous herb. A species of butterwort, it forms summer rosettes of flat, succulent leaves up to 4 inches (10 cm) long, which are covered in mucilaginous (sticky) glands that attract, trap, and digest arthropod prey. In the winter the plant forms a non-carnivorous rosette of small, fleshy leaves that conserves energy while food and moisture supplies are low. Single pink, purple, or violet flowers appear twice a year on upright stalks up to 10 inches (25 cm) long.[图片]How to Grow and Care You can grow Butterwort plants outside in temperate to warm zones or in a pot as annuals. In USDA zones 10 and 11, the plants will persist as perennials and grow new rosettes, multiplying the plant’s diminutive size. The best soil for container plants is a mix of sphagnum moss with equal parts vermiculite or sand. Plants situated outdoors will do best in moist soil or even near water. Butterworts thrive in sun to partial shade. The plants must never dry out, though potted plants should also have good drainage. They must experience a dormancy period to regrow and bloom each spring. Cut back the dead leaves in late winter or early spring to encourage the new growth.[图片]The Butterwort plant is fairly self sufficient. It should not be grown indoors unless you have a gnat problem, but outside it can gather its own food. The plant attracts tiny insects, which get stuck in the slimy, slick coating on the leaves. Their struggle encourages the release of a digestive enzyme.

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2017年10月02日

Scientific Name Tylecodon paniculatus (L.f.) Toelken Common Names Butter Tree Synonyms Cotyledon paniculata Scientific Classification Family: Crassulaceae Genus: Tylecodon[图片]Description Tylecodon paniculatus is a stocky, caudiciform, arborescent succulent, up to 6.5 feet (2 m) tall, making them the largest of the Tylecodons. The plants conserve energy by photosynthesizing through their “greenish stems” during the hot dry summer months. The yellowish green, papery bark is a very attractive feature of this plant and has given rise to the common name. During the winter, plants are covered with long, obovate, succulent leaves clustered around the apex of the growing tip. The long reddish orange, tubular flowers are borne in upright racemes at the onset of summer in November each year, just as the leaves turn yellow and drop off.[图片]How to Grow and Care Cotyledons can be divided into two groups. One group consists of evergreen plants with a summer growing period. The other group is made up of deciduous plants, splendidly magnificent with large, solid fleshy stems. The second group grows during the winter, and sheds its leaves during the summer.[图片]Cotyledons require a free-draining gritty mix and plenty of sun. They are tolerant of cool, frost-free conditions during the winter if kept dry. Some require pruning to maintain an attractive shape. Cotyledons should be kept in a sunny position. Follow general succulent watering procedures. Be careful of over-watering when they are deciduous.[图片]As succulents go, Cotyledons certainly are rewarding garden and indoor subjects, practically independent of irrigation in all but full desert conditions, though they cannot survive poor light or bad drainage in the wet. Feed it once or twice during the growing season with a fertilizer specifically formulated for cactus and succulents (poor in nitrogen), including all micro nutrients and trace elements diluted to ½ the strength recommended on the label.

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2017年10月02日

Scientific Name Hylotelephium spectabile (Boreau) H. Ohba Common Names Showy Stonecrop, Ice Plant, Butterfly Stonecrop[图片]Synonyms Sedum spectabile (basionym) Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Umbilicinae Genus: Hylotelephium[图片]Description Hylotelephium spectabile (Showy Stonecrop) is an herbaceous perennial with light green, simple, oval, alternate, toothed leaves, up to 3.15 inches (8 cm) long and up to 2 inches (5 cm) wide, on erect, unbranched succulent stems, up to 20 inches (50 cm) tall. The flowers are pink, star-shaped, borne in flat cymes, 6 inches (15 cm) across.[图片]How to Grow and Care When growing Sedum, keep in mind that Sedum plants need very little attention or care. They will thrive in conditions that many other plants thrive in, but will do just as well in less hospitable areas. They are ideal for that part of your yard that gets too much sun or too little water to grow anything else. A common name for Sedum is Stonecrop, due to the fact that many gardeners joke that only stones need less care and live longer.[图片]Sedum is easily planted. For shorter varieties, simply laying the Sedum on the ground where you want it to grow is normally enough to get the Sedum plant started there. They will send out roots from wherever the stem is touching the ground and root itself. If you would like to further ensure that the plant will start there, you can add a very thin covering of soil over the plant.

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2017年10月02日

Scientific Name Agave potatorum Zucc. Common Names Butterfly Agave Synonyms Agave verschaffeltii Scientific Classification Family: Asparagaceae Subfamily: Agavoideae Genus: Agave[图片]Description Agave potatorum is a small to medium-sized solitary Agave. It has broad gray leaves that form in an open symmetrical rosette up to 2 feet (60 cm) tall and 3 feet (90 cm) wide. The many up to 18 inch (45 cm) long leaves are slightly reflexed back near the tips with chestnut brown spines. The 1 inch (2.5 cm) long terminal spine is slightly wavy and the short marginal spines are on tubercle-like prominences. The flower spike can be up to 20 feet (6 m) long when fully developed and bears pale green and yellow flowers tinged with red and subtended with red bracts.[图片]How to Grow and Care Agave is not a difficult plant to grow. They’re slow-growing and dramatic and will even thrive on a bit of neglect. If you’re the type of person who likes to fuss with houseplants and water a lot, Agave is probably not the plant for you. If, however, you’re the type of person who likes to set it and forget it, and you have a sunny window, Agave might the way to go. Be aware that some of the large varieties will eventually outgrow your room (unless you have a large greenhouse), and Agave can be aggressive. They have irritating sap and sometimes very sharp thorns that can cause injuries to small children and even pets.[图片]In general, Agave do not need to be repotted every year. Most of the species commonly found in cultivation grow very slowly and will take a long time to outgrow their pot. It’s also best to handle your Agave as little as possible, since they do not like to be disturbed.

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2017年10月02日

Scientific Name Sedum dendroideum Moc. & Sessé ex DC. Common Names Tree Stonecrop, Tree Sedum, Bush Sedum, False Hens and Chickens[图片]Synonyms Sedum dendroideum subsp. dendroideum Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Sedinae Genus: Sedum[图片]Description Sedum dendroideum is a small shrub up to 3 feet (90 cm) tall spreading up to 4 feet (1.2 m) wide and rooting along stems to form a large mass. Leaves are 1.5 inch (2.8 cm) long, green, spathulate with an almost ovate leaf that is easily distinguished from the only other similar species, Sedum praealtum, by the presence of subepidermal glands along the leaf margin. The large clusters of small vivid yellow, star-like flowers form above the foliage in late winter and early spring.[图片]How to Grow and Care When growing Sedum, keep in mind that Sedum plants need very little attention or care. They will thrive in conditions that many other plants thrive in, but will do just as well in less hospitable areas. They are ideal for that part of your yard that gets too much sun or too little water to grow anything else. A common name for Sedum is Stonecrop, due to the fact that many gardeners joke that only stones need less care and live longer.[图片]Sedum is easily planted. For shorter varieties, simply laying the plant on the ground where you want it to grow is normally enough to get the Sedum plant started there. They will send out roots from wherever the stem is touching the ground and root itself. If you would like to further ensure that the plant will start there, you can add a very thin covering of soil over the plant. For taller Sedum varieties, you can break off one of the stems and push it into the ground where you would like to grow it.

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2017年10月02日

Scientific Name Adenium boehmianum Schinz Common Names Bushman’s Poison, Bushman Poison, Bushmen’s Arrow Poison[图片]Synonyms Adenium obesum subsp. boehmianum Scientific Classification Family: Apocynaceae Subfamily: Apocynoideae Tribe: Wrightieae Genus: Adenium[图片]Description Adenium boehmianum is a slow-growing succulent, up to 5 feet (1.5 m) tall. It is an erect shrub with barely succulent stems and only modestly fat roots. The glossy, club-shaped leaves are the largest in the genus, several inches long and broad. The flowers are trumpet-shaped and range from white and bright pink to crimson red, up to 2 inches (5 cm) in diameter.[图片]Hardiness USDA hardiness zone 10a to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C). How to Grow and Care These are not difficult plants to grow well, provided they get enough sunlight and warmth. Like all succulents, they cannot tolerate sitting in water, and if you err, do it on the side of too little water. Use a specialized soil mix designed for cacti and succulents. Fertilize during spring and summer with controlled-release fertilizer or liquid fertilizer according to label directions.[图片]Repot as needed, preferably during the warm season. To repot a succulent, make sure the soil is dry before repotting, then gently remove the plant from the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide and antibacterial solution. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot.

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2017年10月02日

Scientific Name Conophytum burgeri L.Bolus. Br. Common Names Burger’s Onion, Little Light Bulbs[图片]Scientific Classification Family: Aizoaceae Subfamily: Ruschioideae Tribe: Ruschieae Genus: Conophytum[图片]Description Conophytum burgeri is an onion-shaped, single-bodied, succulent plant, that is possibly the most unusual of all the species of the Conophytum genus. It is slow-growing and gradually subdivides. It varies in size and can reach up to 1 inch (2.5 cm) in diameter. Unlike other Conophytums, it is spring and summer growing, and is dormant in its pale leaf-sheath during winter. It produces a purple flower in early autumn, with the aroma of honey.[图片]How to Grow and Care Conophytums are usually grown in dish gardens where they spread slowly but make good ornamental plants for window gardening. They also do well in rockeries where they can be grown in crevices. The Conophytum vegetate during the winter season. They must then be kept dry during hot, gradually wet upon autumn arrival: the moisture stimulate the release of new root hairs and the plant will grow for the entire winter season, foliar issuing new pairs from inside the existing ones. Flowering usually occurs in autumn and the color of the flowers is extremely variable from species to species.[图片]The cultivation is quite easy, but care must be taken to avoid excess water and to prevent rot: the plants themselves communicate their water needing with a slight wrinkling of the epidermis. They do not particularly fear the cold weather and can resist also at temperatures of 23°F (-5°C), as long as the soil is completely dry and the temperature returns rapidly to rise.

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