文章
Colour_
2017年08月09日
①在严寒到来之前将盆花移至朝南向阳的阳台上。
②7~8月间，每15~20天施1次稀薄豆饼液肥。8~10月改为10~15天施1次。
③早春应对植株的内堂枝、细枝或枯枝进行修剪，对徒长枝进行短截，加强通风透光。
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Dummer. ゛☀
2017年08月08日
Family - Asteraceae
Stems - To 2m tall, erect, from fibrous roots and rhizomes, purplish, carinate, simple or branching near apex, herbaceous, fragrant, glabrous.
Leaves - Alternate, petiolate below to sessile above, to -30cm long, 15-16cm broad, deeply pinnatifid to pinnately divided. Lobes serrate, punctate, glabrous. Leaf tissue on rachis also lobed (toothed) and punctate. Leaves fragrant.
Inflorescence - Dense terminal corymbiform arrangement of flower heads. Peduncles glabrous.
Involucre - 1cm in diameter, 5-6mm tall, cupulate. Phyllaries imbricate, 4mm long, -2mm broad, glabrous, with scarious margins, blunt to obtuse at apex and often erose.
Ray flowers - Absent.
Disk flowers - Disk to +/-1cm broad. Corolla tube whitish-yellow, glabrous, +?-2.3mm long, 5-lobed. Lobes acute, .2mm long, yellow. Stamens 5, adnate at base of corolla tube. Anthers yellow, .8mm long, connate around style near apex of corolla tube, included. Style bifurcate, slightly exserted. Achene white in flower, 1mm long, glabrous, 5-angled. Pappus absent or a minute crown. Receptacle conic.
Flowering - July - September.
Habitat - Meadows, fence rows, prairie margins, fields, roadsides, railroads, cultivated.
Origin - Native to Eurasia.
Other info. - Tansy has been used in the past as a remedy for many ailments. The plant is quite toxic and causes abortions and even death in most mammals.
Grown as an ornamental, the plant is quite striking but has a tendency to get "leggy" and fall over at maturity. Hybrids and cultivars exist which have better growing habits.
Stems - To 2m tall, erect, from fibrous roots and rhizomes, purplish, carinate, simple or branching near apex, herbaceous, fragrant, glabrous.
Leaves - Alternate, petiolate below to sessile above, to -30cm long, 15-16cm broad, deeply pinnatifid to pinnately divided. Lobes serrate, punctate, glabrous. Leaf tissue on rachis also lobed (toothed) and punctate. Leaves fragrant.
Inflorescence - Dense terminal corymbiform arrangement of flower heads. Peduncles glabrous.
Involucre - 1cm in diameter, 5-6mm tall, cupulate. Phyllaries imbricate, 4mm long, -2mm broad, glabrous, with scarious margins, blunt to obtuse at apex and often erose.
Ray flowers - Absent.
Disk flowers - Disk to +/-1cm broad. Corolla tube whitish-yellow, glabrous, +?-2.3mm long, 5-lobed. Lobes acute, .2mm long, yellow. Stamens 5, adnate at base of corolla tube. Anthers yellow, .8mm long, connate around style near apex of corolla tube, included. Style bifurcate, slightly exserted. Achene white in flower, 1mm long, glabrous, 5-angled. Pappus absent or a minute crown. Receptacle conic.
Flowering - July - September.
Habitat - Meadows, fence rows, prairie margins, fields, roadsides, railroads, cultivated.
Origin - Native to Eurasia.
Other info. - Tansy has been used in the past as a remedy for many ailments. The plant is quite toxic and causes abortions and even death in most mammals.
Grown as an ornamental, the plant is quite striking but has a tendency to get "leggy" and fall over at maturity. Hybrids and cultivars exist which have better growing habits.
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Colour_
2017年08月08日
①保持适宜温度。鹤望兰最佳生长温度为15℃~25℃，盛夏高温处在半休眠状态，要防止烈日曝晒，冬天需在室内或温室5以上温度越冬。
②#鹤望兰 喜光照。冬天需保暖，成苗在春、夏、秋三季中可放置在室外露天栽培。
③注意适当浇水。浇水应按季节变化而定，冬天盆土可偏干一些，春、秋盆土需保持一定湿润，夏天高温时，可增加浇水量，但盆土不宜经常过湿，排水要通畅。空气干燥时，可在叶面或地上洒些水，以增加空气湿度。
④合理施肥。5月起，每15天需施氮、磷结合的薄肥1次，入秋后再增施1~2次，越冬期间应停止施肥。
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Miss Chen
2017年08月08日
The blue agave (Agave tequilana) is a large plant, up to 6 feet high with broad and stiff leaves forming an erect rosette. The leaves have a bluish tinge, giving the plant its name. Blue agaves produce a flower spike up to 15 feet high after between five and eight years of growth. Its hearts are used to make tequila, and it makes an excellent landscape plant in USDA Zones 9b and above.
Potted Agaves
Blue agave flower spike
Step 1
Place a potted blue agave plant outdoors in the sunniest available spot. Blue agaves thrive in full sun and are vulnerable to rot in shady or cool conditions.
Blue agave
Step 2
Water your agave during the warmer months of the year only when its soil is almost completely dry. Reduce watering to a minimum during the winter. Do not keep potted agaves on a dish as any excess irrigation water must be allowed to drain away. Fertilize only infrequently using a slow release granular fertilizer.
Blue agave detail
Step 3
Replant your agave in a bigger pot when its roots completely fill its container or it becomes top-heavy. Use a potting compost formulated for succulents or a standard potting compost mixed in with 33 percent sharp sand. A heavy clay container will prevent agave plants from toppling over.
Garden Agaves
Blue agave growing wild
Step 4
Grow blue agaves in a sunny spot with well drained, preferably sandy soil. A minimum of six hours of sunshine a day is ideal, according to the University of Florida IFAS Extension. Plant on a raised mound in areas prone to flooding.
Agave in a garden setting
Step 5
Water garden agaves only during summer during periods of drought or just after planting. Garden-grown agaves rarely need fertilizing but do benefit from mulching with organic matter such as bark chips.
Agave flower spike
Step 6
Propagate agaves from offsets or pups which appear around the base of the parent plant. Separate the pups once they have developed their own root systems. You can also propagate blue agaves from seeds collected from the flower spikes.
Potted Agaves
Blue agave flower spike
Step 1
Place a potted blue agave plant outdoors in the sunniest available spot. Blue agaves thrive in full sun and are vulnerable to rot in shady or cool conditions.
Blue agave
Step 2
Water your agave during the warmer months of the year only when its soil is almost completely dry. Reduce watering to a minimum during the winter. Do not keep potted agaves on a dish as any excess irrigation water must be allowed to drain away. Fertilize only infrequently using a slow release granular fertilizer.
Blue agave detail
Step 3
Replant your agave in a bigger pot when its roots completely fill its container or it becomes top-heavy. Use a potting compost formulated for succulents or a standard potting compost mixed in with 33 percent sharp sand. A heavy clay container will prevent agave plants from toppling over.
Garden Agaves
Blue agave growing wild
Step 4
Grow blue agaves in a sunny spot with well drained, preferably sandy soil. A minimum of six hours of sunshine a day is ideal, according to the University of Florida IFAS Extension. Plant on a raised mound in areas prone to flooding.
Agave in a garden setting
Step 5
Water garden agaves only during summer during periods of drought or just after planting. Garden-grown agaves rarely need fertilizing but do benefit from mulching with organic matter such as bark chips.
Agave flower spike
Step 6
Propagate agaves from offsets or pups which appear around the base of the parent plant. Separate the pups once they have developed their own root systems. You can also propagate blue agaves from seeds collected from the flower spikes.
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Colour_
2017年08月08日
#报春花 为多年生宿根草本，常作一、二年生栽培，为我国原产名花。
报春花喜湿润、阳光充足的冷凉环境，生长适温在8℃~20℃；花芽分化要求在10℃~15℃气温条件下进行。一般用播种繁殖，种子4~5月成熟，6~9月播于装有培养土的浅盆中，覆盖薄土，浸透盆土，盖以玻璃，置阴暗处，保持盆土浸润，1周后出芽。去玻璃置半阴处生长，待真叶长至2~3对时，移植于小盆，待长至6厘米冠径时，再定植于直径12厘米瓦盆中。播种6个月后可开花，从立冬开到立夏，以1~3月开花最盛。喜肥沃的酸性腐殖土。
在生长期中‘盆土要湿润，并常施含磷多的稀薄液肥。夏秋间，将盆置于荫凉通风处，到10月下旬后，人室置向阳处，冬季保持室温在10℃~12℃，就能叶茂花繁。花谢后，剪去残花梗及于枯枝叶，可再抽花葶，继续开花。
种子采收。5~6月种子成熟，结实期间，保持室内通风、干燥，如湿度过大，易导致结实不良，甚至霉变。由于种子成熟期不一致，需随熟随采。采下的种子不可暴晒，以免丧失发芽力，应放在阴凉处吹干后收藏。
报春花喜湿润、阳光充足的冷凉环境，生长适温在8℃~20℃；花芽分化要求在10℃~15℃气温条件下进行。一般用播种繁殖，种子4~5月成熟，6~9月播于装有培养土的浅盆中，覆盖薄土，浸透盆土，盖以玻璃，置阴暗处，保持盆土浸润，1周后出芽。去玻璃置半阴处生长，待真叶长至2~3对时，移植于小盆，待长至6厘米冠径时，再定植于直径12厘米瓦盆中。播种6个月后可开花，从立冬开到立夏，以1~3月开花最盛。喜肥沃的酸性腐殖土。
在生长期中‘盆土要湿润，并常施含磷多的稀薄液肥。夏秋间，将盆置于荫凉通风处，到10月下旬后，人室置向阳处，冬季保持室温在10℃~12℃，就能叶茂花繁。花谢后，剪去残花梗及于枯枝叶，可再抽花葶，继续开花。
种子采收。5~6月种子成熟，结实期间，保持室内通风、干燥，如湿度过大，易导致结实不良，甚至霉变。由于种子成熟期不一致，需随熟随采。采下的种子不可暴晒，以免丧失发芽力，应放在阴凉处吹干后收藏。
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Colour_
2017年08月08日
君子兰开花后的养护技巧
1、施肥
#君子兰 在冬季生长速度最快，需要的营养物质最多，因此，施好冬肥很重要。花盆入室前用骨粉、炒芝麻、熟大豆等或复合肥。每隔15～20天浇施1次，也可用动、植物残体浸泡液浇根。做到肥料腐熟淡施，防止浓肥伤害。
2、浇水
君子兰为肉质根，怕水渍。此外，君子兰叶片有蜡质层，冬季气温低，水分的蒸腾、蒸发量少。因此浇水不宜过多，只需结合施肥浇水，保持盆土湿润即可。切不可大水漫灌，造成烂根死苗。
3、保温
君子兰适宜的生长温度为15℃～25℃，10℃停止生长，0℃受冻害。因此，冬季必须保温防冻。花茎抽出后，维持18℃左右为宜。温度过高，叶片、花苔徒长细瘦，花小质差，花期短，温度太低，花茎矮，容易夹箭早产(开花)，影响品质，降低观赏价值。
4、调光
君子兰喜散射光，忌直射强光。冬季室内养护，花盆要放在光照充足的地方。特别是在开花前要有良好的光照，有利花蕾发育壮实。开花后适当降温、避强光，保持通气良好，有利于延长花期。
5、护叶
叶肥花壮，叶绿花艳，叶短、阔、厚、绿、亮、挺是健康君子兰的特点，是促进开花提高观赏价值的基础。维持强健的叶质，除提供合理的肥水外，必须保持叶面清洁，以提高光合效率。
护叶方法：一是定期洗叶：用与室温相同的清水喷洒冲洗或揩抹污染叶片上的尘埃物，保持叶面清洁。二是及时喷洒杀菌剂，防止叶斑病、叶枯病、茎腐病的发生，确保叶片青绿，花朵艳丽。
1、施肥
#君子兰 在冬季生长速度最快，需要的营养物质最多，因此，施好冬肥很重要。花盆入室前用骨粉、炒芝麻、熟大豆等或复合肥。每隔15～20天浇施1次，也可用动、植物残体浸泡液浇根。做到肥料腐熟淡施，防止浓肥伤害。
2、浇水
君子兰为肉质根，怕水渍。此外，君子兰叶片有蜡质层，冬季气温低，水分的蒸腾、蒸发量少。因此浇水不宜过多，只需结合施肥浇水，保持盆土湿润即可。切不可大水漫灌，造成烂根死苗。
3、保温
君子兰适宜的生长温度为15℃～25℃，10℃停止生长，0℃受冻害。因此，冬季必须保温防冻。花茎抽出后，维持18℃左右为宜。温度过高，叶片、花苔徒长细瘦，花小质差，花期短，温度太低，花茎矮，容易夹箭早产(开花)，影响品质，降低观赏价值。
4、调光
君子兰喜散射光，忌直射强光。冬季室内养护，花盆要放在光照充足的地方。特别是在开花前要有良好的光照，有利花蕾发育壮实。开花后适当降温、避强光，保持通气良好，有利于延长花期。
5、护叶
叶肥花壮，叶绿花艳，叶短、阔、厚、绿、亮、挺是健康君子兰的特点，是促进开花提高观赏价值的基础。维持强健的叶质，除提供合理的肥水外，必须保持叶面清洁，以提高光合效率。
护叶方法：一是定期洗叶：用与室温相同的清水喷洒冲洗或揩抹污染叶片上的尘埃物，保持叶面清洁。二是及时喷洒杀菌剂，防止叶斑病、叶枯病、茎腐病的发生，确保叶片青绿，花朵艳丽。
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Dummer. ゛☀
2017年07月30日
Family - Brassicaceae
Stems - To +80cm tall, bluish-green, glabrous, glaucous, herbaceous, erect, branching above, typically single from base, from taproot.
Leaves - Alternate, sessile, glabrous, glaucous. Basal leaves lyrate-pinnatifid, dentate, to +15cm long. Auricles rounded. Cauline leaves sessile, clasping, auriculate, reduced above, to 9cm long, 3cm broad. Auricles rounded and broad.
Inflorescence - Terminal racemes, compact in flower and elongating in fruit to +30cm. Pedicels 6-10cm long in flower, elongating in fruit to +3cm and eventually at or near perpendicular to the axis of the inflorescence, glabrous, glaucous.
Flowers - Petals 4, yellow, clawed, glabrous. Claw to 5mm long, pale yellow to whitish. Limb to 5mm long, 4mm broad, rounded to blunt at apex. Stamens 6, 4 larger and 2 smaller (the two smaller stamens opposite and outside of the larger stamens). Filaments to 7mm long, glabrous, yellow-green. Anthers yellow, 2mm long. Ovary glabrous, green, terete, 4-5mm long. Style 1.7mm long, persistent in fruit. Stigma capitate. Sepals 4, 6-7mm long, to 2mm broad, linear, glabrous, yellow-green, erect to spreading, often with revolute margins. Siliques to +6cm long, terete, ascending and almost parallel with the axis of inflorescence, beaked, glabrous. Beak to 9mm long.
Flowering - April - September.
Habitat - Roadsides, railroads.
Origin - Native to Eurasia.
Other info. - This is the species plant which gives rise to the Rutabaga. Chromosome numbers show that, originally, the plant was a hybrid between B. campestris L. (Turnip) and B. oleracea L. (Cabbage, Broccoli, etc.).
B. napusis not commonly found wild in Missouri but is beginning to spread throughout the state.
Stems - To +80cm tall, bluish-green, glabrous, glaucous, herbaceous, erect, branching above, typically single from base, from taproot.
Leaves - Alternate, sessile, glabrous, glaucous. Basal leaves lyrate-pinnatifid, dentate, to +15cm long. Auricles rounded. Cauline leaves sessile, clasping, auriculate, reduced above, to 9cm long, 3cm broad. Auricles rounded and broad.
Inflorescence - Terminal racemes, compact in flower and elongating in fruit to +30cm. Pedicels 6-10cm long in flower, elongating in fruit to +3cm and eventually at or near perpendicular to the axis of the inflorescence, glabrous, glaucous.
Flowers - Petals 4, yellow, clawed, glabrous. Claw to 5mm long, pale yellow to whitish. Limb to 5mm long, 4mm broad, rounded to blunt at apex. Stamens 6, 4 larger and 2 smaller (the two smaller stamens opposite and outside of the larger stamens). Filaments to 7mm long, glabrous, yellow-green. Anthers yellow, 2mm long. Ovary glabrous, green, terete, 4-5mm long. Style 1.7mm long, persistent in fruit. Stigma capitate. Sepals 4, 6-7mm long, to 2mm broad, linear, glabrous, yellow-green, erect to spreading, often with revolute margins. Siliques to +6cm long, terete, ascending and almost parallel with the axis of inflorescence, beaked, glabrous. Beak to 9mm long.
Flowering - April - September.
Habitat - Roadsides, railroads.
Origin - Native to Eurasia.
Other info. - This is the species plant which gives rise to the Rutabaga. Chromosome numbers show that, originally, the plant was a hybrid between B. campestris L. (Turnip) and B. oleracea L. (Cabbage, Broccoli, etc.).
B. napusis not commonly found wild in Missouri but is beginning to spread throughout the state.
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Dummer. ゛☀
2017年07月27日
Family - Polemoniaceae
Stems - To -1m tall, erect, herbaceous, perennial, from a small woody caudex and slightly thickened roots, terete, glabrescent basally, densely glandular pubescent apically, simple, one or two from base, with 6-15 nodes per stem. Some of the hairs along the length of the stem stellate also.
Leaves - Opposite, decussate, sessile or short petiolate (the petioles obscured by decurrent leaf tissue), to +/-10cm long, +/-5cm broad, ovate to lanceolate, entire, acute to acuminate, pubescent and slightly scabrous adaxially, villosuous abaxially, dark green adaxially, light green abaxially. Veins of the leaf impressed adaxially, expressed abaxially, anastomosing.
Inflorescence - Terminal and lateral cymes from the upper leaf axils, to +/-10cm long (tall). Each division of cyme subtended by a pair of linear bracts. Bracts reduced upward. Branches of inflorescence and bracts densely glandular pubescent. Pedicels to 5mm long.
Flowers - Corolla lilac to pinkish, 5-lobed, glabrous. Tube to +3cm long. Lobes spreading, obovate, blunt at the apex, to 1cm long and broad. Stamens 5, included. Anthers yellow-orange, 3mm long, 1mm broad. Ovary superior, green, ovoid, 1.5-2mm long in flower, 1mm in diameter. Calyx densely glandular pubescent externally, glabrous internally. Calyx tube to 4-5mm long in flower, 5-lobed. Lobes attenuate, 3-4mm long, connected at the base by scarious tissue and helping to form the calyx tube.
Flowering - May - August.
Habitat - Rich, rocky, or alluvial woods, slopes along streams.
Origin - Native to U.S.
Other info. - This striking species is fairly uncommon in Missouri. It is found in just a handful of counties in the Ozarks.
P. amplifolia can be identified by its long corolla tubes, its broad, pubescent leaves, and its pubescent stems. This species is a perennial and would make a good garden subject if the right conditions were provided.
Stems - To -1m tall, erect, herbaceous, perennial, from a small woody caudex and slightly thickened roots, terete, glabrescent basally, densely glandular pubescent apically, simple, one or two from base, with 6-15 nodes per stem. Some of the hairs along the length of the stem stellate also.
Leaves - Opposite, decussate, sessile or short petiolate (the petioles obscured by decurrent leaf tissue), to +/-10cm long, +/-5cm broad, ovate to lanceolate, entire, acute to acuminate, pubescent and slightly scabrous adaxially, villosuous abaxially, dark green adaxially, light green abaxially. Veins of the leaf impressed adaxially, expressed abaxially, anastomosing.
Inflorescence - Terminal and lateral cymes from the upper leaf axils, to +/-10cm long (tall). Each division of cyme subtended by a pair of linear bracts. Bracts reduced upward. Branches of inflorescence and bracts densely glandular pubescent. Pedicels to 5mm long.
Flowers - Corolla lilac to pinkish, 5-lobed, glabrous. Tube to +3cm long. Lobes spreading, obovate, blunt at the apex, to 1cm long and broad. Stamens 5, included. Anthers yellow-orange, 3mm long, 1mm broad. Ovary superior, green, ovoid, 1.5-2mm long in flower, 1mm in diameter. Calyx densely glandular pubescent externally, glabrous internally. Calyx tube to 4-5mm long in flower, 5-lobed. Lobes attenuate, 3-4mm long, connected at the base by scarious tissue and helping to form the calyx tube.
Flowering - May - August.
Habitat - Rich, rocky, or alluvial woods, slopes along streams.
Origin - Native to U.S.
Other info. - This striking species is fairly uncommon in Missouri. It is found in just a handful of counties in the Ozarks.
P. amplifolia can be identified by its long corolla tubes, its broad, pubescent leaves, and its pubescent stems. This species is a perennial and would make a good garden subject if the right conditions were provided.
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Colour_
2017年07月27日
美叶凤尾蕉也称为阔叶苏铁，是泽米铁属植物，原产于美洲等地。
形态特征
干高15~20cm，单干或罕有分枝，有时呈丛生状，粗枝，圆柱形，表面密被暗褐色的排排叶痕，在多年生的老干基部茎盘处，可由不定芽萌发而长出幼小的萌蘖，称为吸芽，地下为肉质的须根系。叶为大型偶数羽状复叶，生于茎干顶端，叶长60~120cm，硬革质，叶柄长15~20cm，疏生坚硬小刺。
羽状小叶7~12对，小叶长椭圆形，两侧不等，基部2/3处全缘，上端密生小钝锯齿，顶部钝渐尖，边缘背卷，无中脉，叶背可见明显突起的平行脉纹40条，由基部直达叶尖。雌雄异株，雄花序松球状，长10~15cm，雌花序似掌状。
美叶凤尾蕉烂根原因
一般美叶凤尾焦烂根的原因都是浇水所致的烂根。
烂根防治方法
需要及时地将植株从盆中倒出，抖落部分宿土，置于半阴凉爽处晾1-2天后换用新的砂壤土栽植即可，以后用盆不可太大，浇水不可太勤，以盆土干燥七成时进行，切不可有死板的浇水间隔时间，要灵活浇水。
如果烂根比较严重，最好将土全部抖尽，然后用500倍液的高锰酸钾或多菌灵溶液浸泡5-10分钟，然后用清水冲洗一遍，再晾至根系干燥，重新栽植即可。
美叶凤尾蕉冻伤
冻伤原因
当冬季气温降到5℃以下，再加上盆土潮湿，易导致植株羽状嫩叶因寒害而倒伏，严重时会引起块茎腐烂，很难再恢复其生机。
冻伤防治
无论是生产性栽培，拟或是家庭种养，越冬期间的棚室温度都应维持不低于10℃，并保持盆土稍呈干燥的状态。少量盆栽，在特别寒冷的日子里，可于夜晚套罩双层塑料袋，次日温度回升后再解去套袋。
形态特征
干高15~20cm，单干或罕有分枝，有时呈丛生状，粗枝，圆柱形，表面密被暗褐色的排排叶痕，在多年生的老干基部茎盘处，可由不定芽萌发而长出幼小的萌蘖，称为吸芽，地下为肉质的须根系。叶为大型偶数羽状复叶，生于茎干顶端，叶长60~120cm，硬革质，叶柄长15~20cm，疏生坚硬小刺。
羽状小叶7~12对，小叶长椭圆形，两侧不等，基部2/3处全缘，上端密生小钝锯齿，顶部钝渐尖，边缘背卷，无中脉，叶背可见明显突起的平行脉纹40条，由基部直达叶尖。雌雄异株，雄花序松球状，长10~15cm，雌花序似掌状。
美叶凤尾蕉烂根原因
一般美叶凤尾焦烂根的原因都是浇水所致的烂根。
烂根防治方法
需要及时地将植株从盆中倒出，抖落部分宿土，置于半阴凉爽处晾1-2天后换用新的砂壤土栽植即可，以后用盆不可太大，浇水不可太勤，以盆土干燥七成时进行，切不可有死板的浇水间隔时间，要灵活浇水。
如果烂根比较严重，最好将土全部抖尽，然后用500倍液的高锰酸钾或多菌灵溶液浸泡5-10分钟，然后用清水冲洗一遍，再晾至根系干燥，重新栽植即可。
美叶凤尾蕉冻伤
冻伤原因
当冬季气温降到5℃以下，再加上盆土潮湿，易导致植株羽状嫩叶因寒害而倒伏，严重时会引起块茎腐烂，很难再恢复其生机。
冻伤防治
无论是生产性栽培，拟或是家庭种养，越冬期间的棚室温度都应维持不低于10℃，并保持盆土稍呈干燥的状态。少量盆栽，在特别寒冷的日子里，可于夜晚套罩双层塑料袋，次日温度回升后再解去套袋。
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