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Miss Chen
2018年01月10日
Miss Chen
Description: This herbaceous perennial wildflower is 3-8' tall and unbranched, except toward the apex where the flowering heads occur. The central stem is terete, light green or dark red (often the latter), and sparsely covered with stiff bristles. The middle to upper leaves are alternate, while the lower leaves are either alternate or opposite; they are up to 7" long and 1¼" across. The leaves are narrowly lanceolate and slightly toothed along their margins; they have short slender petioles up to ½" long. The upper surface of each leaf is rough-textured, while the lower surface is covered with fine short hairs The upper stems terminate in several flowerheads. Each flowerhead spans 2–3½" across, consisting of 10-20 yellow ray florets and numerous yellow disk florets (typically about 60). The disk florets are fertile, while the ray florets are sterile. Individual ray florets are oblong in shape and petal-like, while the tiny disk florets are tubular-shaped with 5 spreading lobes. At the base of each flowerhead, there are several floral bracts (phyllaries) that are light green, linear in shape, and ciliate along their margins. They are arranged loosely together. The blooming period occurs from late summer into the fall and lasts about 1½ months. Each fertilized floret is replaced with an achene about 3-4 mm. long that is oblongoid in shape and somewhat flattened; there are 2 deciduous awns at its apex. The root system is fibrous and rhizomatous. This sunflower often forms vegetative clumps. Cultivation: The preference is full to partial sun, moist conditions, and soil containing loam, sandy loam, or muck. The size of individual plants varies according to soil fertility and moisture levels.
Range & Habitat: The native Luxuriant Sunflower is found primarily in NE Illinois, where it is uncommon (see Distribution Map). Because this sunflower is a hybrid of Helianthus giganteus and Helianthus grosseserratus, it is usually found where the ranges of these two species intersect. Habitats include sedge meadows, calcareous fens, edges of sandy and non-sandy marshes, and moist prairies. This sunflower is found primarily in moist open areas. Faunal Associations: The florets are cross-pollinated primarily by bees, including bumblebees, honeybees, and Andrenid bees. The following Andrenid bees are specialist pollinators of Helianthus spp. (Sunflowers): Andrena accepta, Andrena aliciae, and Andrena helianthi. Other insect pollinators include butterflies, bee flies, and the larger Syrphid flies. Many insects are known to feed on various parts of sunflowers, including aphids, leafhoppers, grasshoppers, leaf beetles, weevils, plant bugs, and others. Several of these species are listed in the Insect Table (excluding moths). Sunflowers are the preferred food plants for the larvae of two butterflies, Chlosyne nycteis (Silvery Checkerspot) and Chlosyne gorgone (Gorgone Checkerspot). The larvae of several moth species also feed on sunflowers (see the Moth Table). Among vertebrate animals, sparrows, goldfinches, and other birds eat the large and nutritious seeds (see the Bird Table), as do some small rodents (Thirteen-Lined Ground Squirrel, Meadow Vole, and White-Footed Mouse). White-Tailed Deer and the Cottontail Rabbit feed on the leaves and young stalks of sunflowers. Among wetland species, the Muskrat occasionally feeds on the stalks or uses them in the construction of its lodges. In general, the ecological value of this and other sunflowers to wildlife is high. Photographic Location: A prairie at Meadowbrook Park in Urbana, Illinois, where this species was introduced. Alternate Leaves Comments: This sunflower is usually taller than the surrounding vegetation and quite showy. Luxuriant Sunflower is similar in appearance to its parental species, Helianthus giganteus (Giant Sunflower) and Helianthus grosseserratus (Sawtooth Sunflower). This hybrid sunflower and its two parents can be distinguished from each other by examining their respective stems: Giant Sunflower has stems that are abundantly covered with long spreading hairs, while Sawtooth Sunflower has stems that are hairless and often glaucous. The Luxuriant Sunflower is intermediate between these two: its stems are sparsely covered with short bristly hairs. However, some authorities prefer to classify specimens with such stems as variants of the Giant Sunflower. All three of these sunflowers prefer open habitats that are somewhat damp. Such sunflowers rank among the preferred hosts of an uncommon parasitic plant, Cuscuta glomerata (Rope Dodder). Because of its dense mass of flowers, this is one of the more attractive Dodder species.
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Miss Chen
2018年01月10日
Miss Chen
Description: This perennial plant is 3-12' tall. Plants in dense colonies are only 3-5' tall, but 'lone wolf' plants can achieve considerable height. The stout central stem is glabrous, glaucous, terete (circular in cross-section), and often reddish or reddish-purple in color. There is very little branching, except for some flowering stems that occur along the upper half of the plant. The leaves are up to 8" long and 2½" across, lanceolate-oblong, and either smooth (entire) or slightly to strongly serrate along their margins. The upper leaf surface is medium to dark green with a sandpapery texture that derives from the presence of minute stiff hairs. The lower leaf surface is pale green and softly hairy. The leaves are often slightly recurved, and they have a tendency to fold upward along their central veins, particularly during hot dry weather. The leaves are opposite below, but they become either alternate or opposite along the upper half of the plant. The leaves taper gradually into slender petioles that are about ½" in length. The upper stems terminate into either individual or small clusters of flowerheads. Each flowerhead is 2½-4" across, consisting of 10-20 ray florets that surround numerous disk florets. The tiny corollas of the disk florets are tubular-shaped and yellow, while the petaloid rays along the circumference of the flowerhead are bright yellow and oblong in shape. Around the base of each flowerhead, there are floral bracts (phyllaries) that are arranged in several overlapping series. These bracts are light green and linear-lanceolate in shape, becoming slightly recurved when the flowerhead blooms. On a large plant, it is not uncommon for several flowerheads to be bloom at the same time. The blooming period occurs from late summer to fall, lasting about 1-2 months. The disk florets are replaced by achenes about 3-4 mm. in length that are oblongoid and somewhat flattened in shape. The root system is fibrous and rhizomatous, often forming clonal colonies of variable size. Cultivation: The preference is full sun, moist soil, and fertile loamy soil with high organic content. However, this robust plant will tolerated other kinds of soil. Powdery mildew may affect the leaves, but this typically occurs during the fall after the blooming period. Strong wind can cause this plant to blow over in exposed situations. It also requires lots of room because of its large (sometimes huge) size and aggressive tendencies.
Range & Habitat: The native Sawtooth Sunflower occurs throughout most of Illinois, except for a few SE counties (see Distribution Map). It is a common plant. Habitats include moist to mesic black soil prairies, thickets, moist meadows near rivers or lakes, Bur Oak savannas, bases of bluffs, fence rows, and areas along ditches, railroads, and roadsides. Sawtooth Sunflower thrives in both disturbed and high quality sites, sometimes forming large colonies that exclude other plants. Faunal Associations: The most common visitors to the flowers are bees, especially long-tongued species. Among these are honeybees, bumblebees, Cuckoo bees (Epeolus spp., Triepeolus spp.), digger bees (Melissodes spp.), and leaf-cutting bees (Megachile spp.). Other insect visitors include Syrphid flies, bee flies, butterflies, moths, and beetles. Both nectar and pollen are available as floral rewards. Other insects feed on the foliage, plant juices, pith of stems, developing seeds, etc., of sunflowers. These insect feeders include caterpillars of the butterflies Chlosyne nycteis (Silvery Checkerspot) and Chlosyne gorgone (Gorgone Checkerspot), stem-boring caterpillars of Papaipema necopina (Sunflower Borer Moth) and Papaipema rigida (Rigid Sunflower Borer Moth), seed-eating caterpillars of the moths Homoeosoma electella (Sunflower Moth) and Stibadium spumosum (Frothy Moth), foliage-eating caterpillars of Grammia arge (Arge Tiger Moth) and Phragmatobia fuliginosa (Ruby Tiger Moth), and many other Lepidoptera (see Lepidoptera Table for a more complete listing of these species).
Other insect feeders of sunflowers include the stem-boring larvae of Apion occidentale (Black Sunflower Weevil) and Cylindrocopturus adspersus (Sunflower Stem Weevil), Physonota helianthi (Sunflower Tortoise Beetle) and Systena blanda (Pale-Striped Flea Beetle), larvae of the flies Neotephritis finalis (Sunflower Seed Maggot) and Strauzia longipennis (Sunflower Maggot), Hesperotettix viridis (Meadow Purple-Striped Grasshopper) and Melanoplus femurrubrum (Red-Legged Grasshopper), Aphis helianthi (Sunflower Aphid) and Uroleucon ambrosiae (Brown Ambrosia Aphid), Clastoptera xanthocephala (Sunflower Spittlebug), and many other insects (see Insect Table for a more complete listing of these species). The seeds of sunflowers are a favorite food of such upland gamebirds and songbirds as the Ring-Necked Pheasant, Bobwhite Quail, Mourning Dove, Redwing Blackbird, Eastern Goldfinch, Lark Sparrow, and Savannah Sparrow. Such rodents as the Franklin Ground Squirrel, Prairie Vole, and Meadow Vole also eat the seeds. These animals probably help to spread the seeds into new areas. When the Sawtooth Sunflower and other sunflowers are located near bodies of water, beavers and muskrats sometimes use their stems to construct dams or lodges. Deer, cattle, and other hoofed mammalian herbivores occasionally browse on the foliage of larger sunflower plants, while groundhogs and rabbits are more likely to attack smaller plants.
Photographic Location: The photographs were taken at the Red Bison Railroad Prairie in Savoy, Illinois, and Meadowbrook Park in Urbana, Illinois. Comments: Notwithstanding its name, the Sawtooth Sunflower often has leaves that are toothless or only slightly serrated. There is considerable variation in the size of plants across different locations, and the leaves are somewhat variable in their size and shape. This sunflower can be distinguished from other Helianthus spp. (sunflowers) by its smooth reddish stems, which often have a powdery white bloom that can rubbed off (i.e., they are glabrous and glaucous). The lower stems on large older plants can become slightly woody in appearance. The Sawtooth Sunflower is similar in size and appearance to Helianthus giganteus (Giant Sunflower), but this latter species has hairy stems and it is usually found in habitats that are more moist and sandy.
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文章
Miss Chen
2018年01月10日
Miss Chen
Description: This is an annual wildflower with a large and stout central stem about 3-9' tall, although occasionally smaller. Toward the apex of the plant, there may be a few side stems, but it is tall and columnar overall. The central stem is light green to reddish green, terete, and covered with stiff spreading hairs. The large alternate leaves are up to 8" long and 6" across – they have a tendency to droop downward from the long petioles. They are cordate, ovate-cordate, or ovate with fine dentate margins, although some of the small upper leaves may have smooth margins and a lanceolate shape. The upper surface of the leaves is dull green and covered with short stiff hairs, providing it with a sandpapery feel. The petioles are light green to reddish green, and covered with short stiff hairs; the upper surface of each petiole is channeled. Colony of Blooming Plants The daisy-like flowerheads consist of numerous central disk florets (each about 1/8" across) that are yellow to brown; they are surrounded by approximately 20-40 ray florets. The petal-like extensions of the ray flowers are yellow. Each flowerhead is about 3-5" across. At the bottom of each flowerhead, there are large overlapping bracts in 2-3 series. These floral bracts are dull green, stiffly hairy, and ovate in shape, tapering abruptly to form long narrow tips. An average plant will bear from 1-12 of these flowerheads, and bloom from mid- to late summer for about 1½ months. There is not much of a fragrance, although the florets have a musty smell that is peculiar to sunflowers. During the fall, the disk florets are replaced by large seeds that are ovoid and somewhat flattened in shapee; they are dispersed by gravity when the tall plants topple over during the winter. Like many other species in its genus, the Annual Sunflower exudes chemicals that kills off other kinds of vegetation. Thus, it has a tendency to form colonies that exclude other plants, particularly in disturbed areas.
Cultivation: The preference is full sun, moist to slightly dry conditions, and a fertile loamy soil. However, this wildflower often thrives in soil with a high clay or gravel content. There is a natural tendency for the lower leaves to shrivel and drop whenever there are extended spells of hot dry weather. Powdery mildew sometimes attacks the leaves during the fall, but this is usually after the plant has finished blooming and is forming seeds. It is easy to start new plants from seeds. Range & Habitat: The native Annual Sunflower occurs throughout Illinois; it is especially common in the central and northern areas of the state (see Distribution Map). Habitats include disturbed areas of mesic to dry prairies, meadows in wooded areas, cultivated and abandoned fields, pastures, areas along railroads and roads, and urban waste areas. Annual Sunflower may occur sporadically as individual plants, or in small to large colonies that persist year after year. This rather weedy wildflower can be controlled by summer wildfires or periodic mowing. Faunal Associations: Long-tongued bees are the most important pollinators of the flowers, including the honeybee, bumblebees, digger bees (Melissodes spp.), and leaf-cutting bees (Megachile spp.). Short-tongued bees that are important visitors of the flowers include Halictid bees, alkali bees, and some Andrenid bees. Some bees are specialist pollinators (oligoleges) of sunflowers; the oligolectic bees Andrena accepta, Andrena helianthi, Dufourea marginatus, Melissodes agilis, and Pseudopanurgus rugosus have been observed to visit the flowers of Annual Sunflower. Visitors of lesser importance include bee flies, butterflies, skippers, and the Goldenrod Soldier Beetle (Chauliognathus pennsylvanicus). These insects are searching for nectar and pollen. In addition to these floral visitors, many insects feed on the leaves and other parts of Annual Sunflower (see Insect Table). Because the seeds are abundant, large-sized, and nutritious, they are an attractive food source to many vertebrate animals, including upland gamebirds, songbirds, ground squirrels, tree squirrels, and mice. To some extent, the seeds are distributed by these animals to new locations. Mammalian herbivores, such as rabbits, ground hogs, and deer, often consume the foliage, particularly from young plants. When this sunflower grows near sources of water, muskrats and beavers sometimes eat its stems and other parts; beavers also use the stems in the construction of their lodges and dams.
Photographic Location: The above photographs were taken along a railroad near Champaign, Illinois. Comments: The Annual Sunflower is thought to be adventive from western United States. However, it was cultivated as a source of food by native Americans, and was likely introduced to Illinois by them prior to European settlement. The cultivated sunflower of modern agriculture is a self-pollinating hybrid of this plant and another annual sunflower that occurs in the Great Plains. Because of its large heart-shaped leaves, it is easy to distinguish the Annual Sunflower from other Helianthus spp. (Sunflowers) that occur in the Midwest.
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Miss Chen
2018年01月10日
Miss Chen

君子兰是一种高品味的名贵花卉。它的拉丁文名字含有富贵、高尚、美好、壮丽的意思。《辞源》称“有才徳的人为君子”。君子兰的命名，其寓意有着人的君子般的品格和风采。中国君子兰是一种品格高尚、伫立含蓄的花卉。中国君子兰具有团结奋斗、勇于创新的精神，具有格调高雅的姿容，具有幽静、素雅的品格。 在大部分爱花的家庭，君子兰可以说是最常见的盆栽植物了，它的花叶的观赏性都很好，不过很多新手往往养不好君子兰，不是黄叶就是不开花，更严重的就是烂根。 这些都是因为浇水不当或养护环境适宜造成的，根据君子兰的生长习性来调节养护方式。 有的花友的君子兰养了近十年都不开花，也没有怎么长叶子，那是什么情况呢？ 这种通常都是根系长好，因为君子兰是肉质型的根系，那些长势很好的君子兰，根系一般都是非常旺盛的。 那么想要养好根系就要给予疏松肥沃的腐殖土，用腐叶土搭配河沙，适当添加腐熟的木屑和树皮，混入一些腐熟的鸡粪肥，就能保证养分和肥力充足。 如果你的盆栽君子兰停止生长，除了通过换盆换土的方式解决，还可以查看一下土壤是否板结。 这个时候并不是简单的松土就能解决的，因为土壤板结，盆土的透气性就会变差，影响的是根系的生长，根系没法吸收到养分和水分，就开始停止生长了，但是因为根系还有水分，所以短时间不会挂掉。
如何让君子兰恢复生长？ 这个时候最佳的做法就是将君子兰换盆，然后剪掉烂根和枯萎的根系，之后准备疏松肥沃的土壤，上足够多的基肥，保证养分充足。 但是如果到了夏季高温的时候，就不适合换盆了，那么就可以用啤酒解决，可以在盆土浇一点啤酒，在通风的情况下浇，5~7周浇一点，不要浇到叶心处，一般2~3周君子兰就能恢复生长了。 注意：用啤酒浇花对君子兰的确是促进作用，但是要注意不要浇得太多，过量当然是有害无益的。 如果君子兰夹箭，花箭抽不出来，也可以适当浇一点啤酒，能够促进君子兰抽箭。 希望你的君子兰也能年年开花，每年都能开2次花。
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文章
Miss Chen
2018年01月10日
Miss Chen

花开茂盛的长寿花都是长得植株紧凑的，如果枝叶徒长，枝叶之间间隙比较大，那样的长寿花就很难开花，即便是开花，也是比较稀疏的，想要将长寿花的花期延长或常年开花，下面这几点就要记住了。
1、适当的肥水 生长环境温暖，有充足的阳光，那么就可以稍微增加浇水，但也是等盆土干透后浇水，避免频繁浇水，长寿花就是一种多肉植物，对水分的需求并不高。 如果光照不足，加上浇水频繁，植株很容易徒长，就很难开花了。 生长期要薄肥勤施，一般都是一个月给1~2次稀薄的平均肥，在秋季的时候适当增施磷钾肥。 2、适当见光 长寿花平常都是喜欢充足的光照，尽量养在一个每天有8小时以上光照的地方，这样它的枝叶就能长得紧凑，也更容易储存能量，孕育花朵。 如果到了花期，就要适当减少光照，每天有一点散射光就行了，过多光照虽然会让花朵开花更盛，但花期也会缩短。 3、养护环境 长寿花养护的环境除了给予充足的光照，还要保持清洁，注意叶面不要沾染过多灰尘。其他就是要注意环境通风，不要养在环境密闭的空间，不然很容易诱发病菌，造成叶斑病或根腐病。 4、花期养护 花期除了适当减少光照，还需要注意避免花叶长期沾水，夜晚不要喷水在花叶上，花朵容易枯萎。 花朵枯萎之后要及时剪掉残花，这样可以让植株保留更多的养分，长寿花也会有机会再次孕育花朵了。 5、其他注意事项： 长寿花虽然喜欢充足的光照，但是夏季酷暑的时间段，还是要适当遮阴，避免烈日暴晒，注意经常查看叶面状况，发现晒伤就要及时搬到遮阴处。 花期要控水，适当减少光照，天气转凉之后就要避免过多浇水，停止施肥。植株长得较长之后就要掐顶、修剪，可以促进多分枝，开更多的花。
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文章
Miss Chen
2018年01月10日
Miss Chen

耐阴植物是指在光照条件好的地方生长好，但也能耐受适当的荫蔽，或者在生育期间需要较轻度的遮阴的植物。对光的需要介于阳生和阴生植物之间，它们所需的最小光量约为全光照的1/15-1/10。 耐阴植物在形态和生态上的可塑性很大，也介于上述两类型之间。如树木中的青岗属、山毛榉、云杉、侧柏、胡桃等；药材植物中的桔梗、党参、沙参、黄精、肉桂、金鸡纳等。耐阴植物同其他植物一样有调节环境温度、湿度、吸附消化有害气体和灰尘、净化空气、平衡空气中氧气和二氧化碳含量等多种功能；同时它弥补了其他植物的缺陷，能在阳光很少的区域、阴湿的环境中良好生长，起到良好的水土保持作用。 如果你想要栽种一些特别耐阴的植物，下面这些就很适合你，无论是种院子还是室内，这8种不同类型的植物也一定能够满足你的需求，不需要光照也能生长，新手也能养活。
1、矾根 它是一种多年生的宿根植物，喜欢温暖湿润的环境，现在有的地方都用它来绿化，花色是非常优美的。 养在室内要注意保持一定的环境湿度，它不喜欢干燥，养护要多喷水，土壤干了就需要浇水，养在阳台就要注意避免暴晒。 2、荷包牡丹 荷包牡丹很适合栽种在通风和遮阴的角落，给予疏松和排水良好的土壤，避免盆土积水，不要让阳光直射或暴晒，它就能保持生长了。值得注意的是，荷包牡丹的耐寒性比较好，在北方的院子养护起来也是比较可行的。 3、观赏蕨类植物 如果室内有阴凉潮湿的地方，那么栽种蕨类植物就是不错的选择，常见的鸟巢蕨、铁线蕨、珊瑚蕨和凤尾蕨等，它们的植株小巧，耐阴，喜欢湿润的环境，保持湿度和温暖，它们就能保持良好的生长了。 4、冷水花 它们一般都是生长在树荫下，盆栽养在室内也是完全可行的，非常小巧的观叶植物，养护比较简单，保持环境一定的环境湿度，给予疏松和排水良好的土壤，加上温暖遮阴的环境，就可以让它长得油光华亮了。 5、猫眼草 这是一种很特别的小草，有时候会野生在院子里，它是一种可以入药的植物，正式名叫大戟，不能误食，一般是不作为盆栽养护的，不过它的长相非常别致，可以作为庭院的装饰植物。 6、玉簪 玉簪的名字很好听，是因为它开花的时候，花朵很像古代女子头上的玉簪，它也会是很好养护的盆栽植物，养护需要排水良好的土壤，环境保持温暖微润即可，它喜欢阴凉的环境，长在光线明亮处也能开花，花朵还带着迷人的香味呢。 7、铃兰 铃兰是一种适合生长在树荫下的植物，在阴凉处生长特别好，喜欢疏松、肥沃、排水良好和富含腐殖质的土壤，养护需要保持通风和土壤微润就行了。 养护要注意避免暴晒和高温，冬季避免受冻，也要记住不要和水仙花种一起，不然会两败俱伤。 8、菖蒲（金钱蒲） 这是一种多年生的草本植物，喜欢生长在潮湿阴凉的水边和岩石上，是非常清新的观赏草，养护要保持较高的环境湿度，避免暴晒和受冻。 养护注意保持水分充足，保持环境湿度，作为盆景装饰植物也是非常棒的。
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文章
Miss Chen
2018年01月10日
Miss Chen

喜欢养花的朋友每隔一段时间就会到花市或花店看看，刚买的盆栽都是长得非常好的，植株紧凑花叶茂盛，但是养了一段时间之后就会出现叶黄或掉叶的情况，而且开花情况越来越不乐观，如果你掌握下面6种溶液的使用方法，就能得到很好的改善了。
小技巧1：蛋清浇花 日常生活产生的蛋清，可以稀释之后用浇花，但是一定要在晴朗和通风的情况的情况下使用，最好是早上浇，这样水分可以更快地会发，能够很好促进植物生长。 小技巧2：淘米水加强版 淘米水如果没有完全发酵就用来浇到土壤中，有可能会滋生虫子，但是完全发酵之后又会有很臭的味道，但是如果加入一些烟丝浸泡的溶液就不同了，可以将烟丝浸泡的溶液混合淘米水，2~3天之后倒入盆土中，这样就不用担心长虫子了，味道几乎没有，有一定的杀虫效果。 注意环境通风，避免在通风不好的室内使用。 小技巧3：复合肥变液肥 可以将复合肥稀释之后再使用，直接混入清水中浸泡2~3天之后，在用来浇花，这样就不用担心烧伤植物，对植物的促进作用是非常快的。 小技巧4：汤水 不放油盐的清水用来煮菜之后，不要急着倒掉，这棵晾至常温之后，直接浇到土壤中，这样的汤水就是很好的肥料，如果盆栽植物是养在通风的地方，就可以半个月浇一次这种水。 这里要注意的是没有放什么调料的汤水，也就是青菜放锅里的清水中过一下清水，然后捞起来的溶液。 小技巧5：养鱼的水浇花 鱼缸的废水也是可以用来浇花的，这些肥水里有鱼儿的粪便，用来浇花也是非常适合的，也要在通风的环境中使用。 小技巧6：鸡蛋壳变肥料 鸡蛋壳不要丢了，可以将它们清洗干净，然后暴晒几天，之后就可以碾碎，混合土壤中，就能变成很好的稀缓型有机肥了，也可以直接碾碎铺在土面上，还能驱赶鼻涕虫和蜗牛之类的小害虫。
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Miss Chen
2018年01月10日
Miss Chen

有的养花新手刚开始养花的时候特别勤快，恨不能一天不停地浇水，这样不停地浇水，植物是长不好的，即便侥幸活了下来，但是也很难开花，水多就容易造成植株徒长，也就是枝叶的间距拉大，长得瘦弱。 养植物当然不能随便浇水，养护之前可以了解一下它的生长习性，你就知道它喜欢什么样的生长环境，多久浇一次水，这样才能把植物养好。 养大部分的植物只要掌握植物干透浇透的原则就行了，起码能把植物养活。
1、不要随意搬动植物 植物要适应一个环境是需要时间的，一般的盆栽植物适应朋友们的养护环境需要一周的时间，期间不要随意搬动植物，不然容易造成掉蕾或落叶的状况。 一些具有较强的趋光性的植物，可以每周转一下花盆，这样可以避免植物偏向一个地方生长，如君子兰。 2、怎么判断是否浇透 在土壤没有板结或开裂的情况，只要沿着盆土根茎或盆沿浇水，知道盆底的排水孔有水流出来，这样就算浇透了，前提是土壤没有结块或土壤开裂。 3、不要乱施肥 如果植物非常缺肥料，就会长得非常瘦弱，这个时候不能一下子给太多肥料，就像是人生了大病之后，就不能吃太补的东西。这个时候给植物一点点薄肥，让它慢慢恢复。 4、如何了解盆土是否干透？ 可以用竹签或木棒插入土壤中3~5厘米，放几分钟之后，再拔起来，只要查看竹签上是否有水分，就能很好判断土壤的干湿情况，完全干透了再进行浇水。
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Miss Chen
2018年01月09日
Miss Chen
Stargazer lilies produce 6- to 8-inch blooms and a delightful fragrance. The blossoms are red with a white border. Stargazers are one of the most expensive flowers that florists sell, according to the Iowa State University Extension.
Loading ad Geography Stargazer lilies grow in a variety of climates in USDA plant hardiness zones 4-9. They need full sun and well-drained soil. Planting the Bulbs Buy from a plant nursery that has cold-treated the Stargazer bulbs, which increases the likelihood of the plant blooming during the first summer. Plant the bulbs immediately and at least 8 inches apart. If you buy frozen bulbs, thaw them before planting.
Sprouting Several factors determine when the bulbs will sprout, such as the density of surrounding bulbs, amount of sunlight, temperatures and planting time. These particular bulbs never go dormant, so they'll begin to sprout roots when you plant them. It takes up to 3 weeks for the plant to sprout through the ground. Fun Fact Stargazer lilies make excellent cut flowers. Remove the anthers, which contain the pollen, and the flowers will live longer in a vase.
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Miss Chen
2018年01月09日
Miss Chen
What you do with paperwhites (Narcissus tazetta ssp. papyraceus) after they bloom is largely a function of what you do with them before they bloom. Paperwhites are bulb plants that are hardy outdoors in U.S. Department of Agriculture plant hardiness zones 9 through 11 but also are used for forcing indoors during winter. The outdoor plants stay outdoors after they finishing flowering to bloom the next year while spent indoor paperwhites either are tossed in the garbage or planted outside. Their flowers' pure-white coronas and petals distinguish paperwhites from their relatives.
In the Garden If you plant paperwhite bulbs in your garden one year -- September through December, they should produce their pale flowers for many springs to come. Paperwhites need only well-drained soil and a sunny site to thrive and even naturalize. Plant the bulbs so that their pointed tops are 3 inches below the soil surface, spacing four bulbs per 1 square foot. Don't cut back the foliage after the flowers fade; wait until the leaves have withered to allow the plants to restock their food supply. At that point, cut the foliage to the ground, and wait for next year's floral display. Forcing in Winter The term "forcing bulbs" may sound harsh, but it simply means tricking bulbs into blooming when it is not their normal time to bloom. Most bulbs require a period of refrigeration to bloom in winter, but paperwhites do not. Plant them close together, pointy ends up, in soil, stones or sea glass, with the top one-half of each bulb sticking out of the material. Keep the soil moist, or, if you use stones or shells, maintain a water level up to 3/4 inch from the top of that material. The flowers should bloom in about one month.
Indoors If you force your paperwhite bulbs one year, don't try the same trick the following winter; it usually won't work because the bulbs have not been able to replenish their energy. Many people toss out forced paperwhite bulbs when the blooms are off the plants, but an option is to transplant the bulbs, yellowing foliage and all, into a sunny garden site. If you forced the bulbs in material such as stones or shells, then the bulbs may take two years to restock their reserves and flower again. Origin of Genus Name In Greek mythology, Narcissus was the beautiful youth who spent his life admiring his own reflection in a pool of water; after death, a flower of astonishing beauty grew in his place. It is from this legend that paperwhites get their genus name, and paperwhites often attract attention whether they bloom in pots indoors or in fields of white in a garden.
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