动态第481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 myrsinites L. Common Names Myrtle Spurge, Myrtle Euphorbia, Blue Spurge, Broad-Leaved Glaucous Spurge, Creeping Spruge, Donkey Tail Spruge, Donkey Tail[图片]Synonyms Euphorbia myrsinites subsp. myrsinites, Endoisila myrsinites, Euphorbion myrsinitum, Galarhoeus myrsinites, Murtekias myrsinites, Tithymalus myrsinites Scientific Classification Family: Euphorbiaceae Subfamily: Euphorbioideae Tribe: Euphorbieae Subtribe: Euphorbiinae Genus: Euphorbia[图片]Description Euphorbia myrsinites is an attractive low growing succulent evergreen perennial. It has sprawling stems growing up to 16 inches (40 cm) long. The leaves are spirally arranged, fleshy, pale glaucous bluish-green, up to 1 inch (2.5 cm) long. The flowers and their subtending bracts are initially greenish-yellow but deepen to a red hue by summer.[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. Water whenever the soil is dry several inches below the surface. Water deeply, but don’t let them sit in wet soil, which can cause root rot. Add some organic matter or fertilizer to the planting hole.

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2017年10月02日

Scientific Name Sedum rupestre ‘Blue Spruce’ Common Names Blue Spruce Stonecrop[图片]Synonyms Sedum reflexum ‘Blue Spruce’ Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Sedinae Genus: Sedum[图片]Description Sedum rupestre ‘Blue Spruce’ is a drought tolerant groundcover with small, succulent blue leaves reminiscent of the needles of a blue spruce conifer. In June deep mauve pink stems rise up to 10 inches (25 cm) and are topped with brilliant yellow flowers. It is great for rock walls, green roofs, walkways and containers. Evergreen in warmer zones.[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 Dasylirion wheeleri S.Watson ex Rothr. Common Names Desert Spoon, Spoon Yucca, Spoon Flower, Common Sotol, Blue Sotol, Grey Desert Spoon[图片]Synonyms Dasylirion wheeleri var. wheeleri Scientific Classification Family: Asparagaceae Subfamily: Nolinoideae Genus: Dasylirion[图片]Description Dasylirion wheeleri is an evergreen, long-lived plant with long, gray, strap-shaped, serrated leaves on a stout, short trunk that can rise up to 6 feet (1.8 m) and the spread can be about the same. The leaves are up to 3 feet (90 cm) long, narrow, blue-gray, with sharp, serrated margins and a spoon-shaped base that gives the plant one of its common name. These leaf bases remain on the trunk giving it a rough appearance. Flowering occurs only every few years with tiny flowers (this is a dioecious plant bearing flowers of one sex or the other) on stout spikes up to 15 feet (4.5 m) tall from the center of the leaf rosette in early summer. The color of the flower determinate the gender of the plant, being mostly white colored for males and purple-pink for females. After flowering the rosette branches at the base of the inflorescence to replace the flowering rosette and enabling the stem to continue to grow on.[图片]How to Grow and Care Dasylirions are slow growing, carefree and durable, drought tolerant plant. However, they grow faster if watered well (don’t water the crown, though they rot easily). In the garden they should be placed in a sunny, well-drained area with additional summer water in dry climates. These make great specimen plants for xeriscape gardens and blend well in either tropical or arid gardens. Small plants are relatively inexpensive, but larger ones are a fortune. These make excellent potted specimens, and their symmetrical form provides a striking focal point.[图片]They thrive best in full sun, but can be grown with some shade and humidity. Plant in very fast draining soil and provide little or no water in winter. Treat like a succulent. Best where winter temperatures stay above 50°F (10°C), but can take some periods of frost.

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2017年10月02日

Scientific Name Echeveria x imbricata Deleuil ex E. Morren Common Names Blue Rose Echeveria, Hens and Chicks[图片]Synonyms Echeveria ‘Imbricata’, Echeveria imbricata Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Sedinae Genus: Echeveria[图片]Description Echeveria x imbricata is a popular and vigorous succulent, up to 8 inches (20 cm) wide, with tight rosettes of flat grey-green leaves that, when mature, form offsets freely to form large solid clumps up to 6 inches (15 cm) tall. Blue Rose Echeveria has a branched arching inflorescence bearing clusters of red and yellow flowers in the spring and early summer.[图片]How to Grow and Care Most of the common Echeveria species are not complicated succulents to grow, provided you follow a few basic rules. First, be careful never to let water sit in the rosette as it can cause rot or fungal diseases that will kill the plant. Additionally, remove dead leaves from the bottom of the plant as it grows. These dead leaves provide a haven for pests, and Echeveria are susceptible to mealy bugs. As with all succulents, careful watering habits and plenty of light will help ensure success.[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 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.

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2017年10月02日

Scientific Name Argyroderma patens L.Bolus Common Names Blue Stone Plants, Blue Pebbles, Living Rock, Ice Plant[图片]Scientific Classification Family: Aizoaceae Genus: Argyroderma[图片]Description Argyroderma patens is a succulent plant that consist of a pair of fleshy leaves, either singly or in clusters. The leaves are up to 1.6 inches (4 cm) tall and up to 0.8 inch (2 cm) wide, half-ovoid, rounded slightly compressed and keeled below, silvery-blue to grayish-silver, older leaves rusty-brown, with a v-shaped fissure. The flowers are up to 1.2 inches (3 cm) in diameter, daisy like, purple or magenta-pink. Flowers appear late in autumn or winter.[图片]How to Grow and Care The basics of Mesemb care are very simple, with free-draining soil, plenty of sun and ventilation, and regular light watering in the right season. Yet the difficulties are endless, trying to adapt to the Mesembs’ own adaptability and to follow their growth habits in your particular conditions. Mesembs require a loam-based compost with the addition of extra drainage material such as horticultural grit or perlite. They all like good light conditions and plenty of ventilation.[图片]Some are relatively cold-hardy and can even survive mild winters outside. Most will survive temperatures down to freezing point. There are some Mesembs which begin to grow in the autumn as the temperature drops and the days get shorter.

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2017年10月02日

Scientific Name Sedum pachyphyllum Rose Common Names Stonecrop, Succulent Beans, Jelly Bean Plant, Jelly Beans, Silver Jelly Beans, Blue Jelly Bean, Succulents Water Plant, Many Fingers[图片]Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Sedinae Genus: Sedum[图片]Description Sedum pachyphyllum is a bush forming or ground-hugging succulent, up to 1 foot (30 cm) tall, spreading over time by rooting stems and fallen leaves. The glaucous light green silvery leaves are short stumpy finger-like projections and are often tipped with red. The flowers are yellow and appear in the summer.[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 varieties vary in height. The smallest are just a few inches tall, and the tallest can be up to 3 feet (90 cm). The large majority of varieties are shorter and they are frequently used as ground covers in xeriscape gardens or rock gardens. Sedum varieties also vary in their hardiness. Many are hardy to USDA zone 3, while others need a warmer climate.

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2017年10月02日

Scientific Name Curio talinoides var. mandraliscae (Tineo) P. V. Heath Common Names Blue Chalk Sticks, Blue Stick Succulent, Blue Finger[图片]Synonyms Senecio talinoides var. mandraliscae, Senecio mandraliscae, Kleinia mandraliscae Scientific Classification Family: Asteraceae Subfamily: Asteroideae Tribe: Senecioneae Subtribe: Senecioninae Genus: Curio[图片]Description Curio talinoides var. mandraliscae is a spreading succulent up to 18 inches (45 cm) tall, with 3 to 4 inch long blue gray pencil-like fleshy leaves. It forms a dense mat with leaves angled upward from the ground. Flowers are small rayless dull white and bloom in summer.[图片]How to Grow and Care Established plants are extremely drought tolerant. They do need some water, during the summer, but do not leave the soil wet for prolonged periods. Allow the soil to dry out between waterings in the winter, when they are somewhat dormant. Since they are growing in sandy soil, nutrients will need to be replenished. Fertilize annually, but lightly. Too much fertilizer will cause a lot of leggy growth. Taller varieties can get floppy. You can prune them back to where the stem is firm, in very early spring. You can even root the cuttings. Plants can be divided or repotted in early spring. If you are growing them in containers, they enjoy spending the summer outdoors. Wait until there is no danger of frost and move them back indoors in the fall.[图片]Senecio can be grown from either seed or cuttings. Seeds prefer warm temperatures (55˚F / 13˚C). And constant moisture to germinate. Cuttings are easier and faster.

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2017年10月02日

Scientific Name Echeveria secunda Booth ex Lindl. Common Names Old Hens and Chicks, Hens and Chicks, Blue Echeveria, Glaucous Echeveria[图片]Synonyms Cotyledon glauca (basionym), Echeveria glauca Scientific Classification Family: Crassulaceae Subfamily: Sedoideae Tribe: Sedeae Subtribe: Sedinae Genus: Echeveria[图片]Description Echeveria secunda is a succulent that forms attractive clumps up to 6 inches (15 cm) tall, tight rosettes of short blue-gray leaves and in late spring appear flowers on up to 1 foot (30 cm) tall arching stems. The flowers are fairly large compared to the plant and have red calyces and yellow petals, giving them a bi-colored appearance. A hint of pink on older leaves and leaf margins is evident, primarily in winter.[图片]How to Grow and Care Most of the common Echeveria species are not complicated succulents to grow, provided you follow a few basic rules. First, be careful never to let water sit in the rosette as it can cause rot or fungal diseases that will kill the plant. Additionally, remove dead leaves from the bottom of the plant as it grows. These dead leaves provide a haven for pests, and Echeveria are susceptible to mealy bugs. As with all succulents, careful watering habits and plenty of light will help ensure success.[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 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. 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 Aloe humilis (L.) Mill. Common Names Spider Aloe, Blue Dwarf Aloe, Dwarf Hedgehog Aloe[图片]Synonyms Aloe echinata, Aloe incurva, Aloe macilenta, Aloe perfoliata var. humilis, Aloe suberecta, Aloe subtuberculata, Aloe tuberculata, Aloe verrucosospinosa, Aloe virens, Catevala humilis, Haworthia ferox Scientific Classification Family: Xanthorrhoeaceae Subfamily: Asphodeloideae Genus: Aloe[图片]Description Aloe humilis is a low growing succulent that forms dense clusters of small up to 8 inch (20 cm) wide stemless (or very shortly stemmed) rosettes. The leaves are up to 5 inches (12.5 cm) long and 0.7 inch (1,8 cm) wide, pale blue-green or grey-green, incurved triangular-shaped (20-30 per rosette). They have long soft white marginal spines up to 0.1 inch (3 mm) long and a gray-green waxy surface covered with irregularly spaced bumps. The unbranched up to 1.1 feet (35 cm) tall flower spikes bearing about 20 pendulous up to 2 inches (5 cm) long bright red-orange flowers.[图片]Hardiness USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C). How to Grow and Care Aloe is a very forgiving plant, and a well-grown plant can be quite beautiful. As with all succulents, it’s essential that Aloe is never allowed to sit in stagnant water, and the plant should be carefully monitored to watch for signs of overwatering.[图片]Aloe are not particularly fast-growing and will only rarely need repotting. Repot plants in the spring that are tipping over their pots or have ceased growing. Use a fast-draining potting mix with one-third sand or pebbles.

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2017年10月02日

Scientific Name Senecio cylindricus (A.Berger) Jacobsen Common Names Narrow-Leaf Chalk Sticks, Blue Chalk Fingers Synonyms Senecio vitalis, Senecio talinoides subsp. cylindricus [图片]Scientific Classification Family: Asteraceae Subfamily: Asteroideae Tribe: Senecioneae Subtribe: Senecioninae Genus: Senecio [图片]Description Senecio cylindricus is a low growing succulent shrub up to 24 inches (60 cm) tall and spreading up to 5 feet (1.5 m) wide with semi-prostrate stems that turn upright and are crowded at the tips with up to 5 inches (12.5 cm) long, slender and slightly upcurved, gray-green, tubular leaves. The small, rayless, dull cream colored flowers appear in corymbs in late spring to early summer. [图片]How to Grow and Care Established plants are extremely drought tolerant. They do need some water, during the summer, but do not leave the soil wet for prolonged periods. Allow the soil to dry out between waterings in the winter, when they are somewhat dormant. Since they are growing in sandy soil, nutrients will need to be replenished. Fertilize annually, but lightly. Too much fertilizer will cause a lot of leggy growth. [图片]Taller varieties can get floppy. You can prune them back to where the stem is firm, in very early spring. You can even root the cuttings. Plants can be divided or repotted in early spring. If you are growing them in containers, they enjoy spending the summer outdoors. Wait until there is no danger of frost and move them back indoors in the fall.

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