文章
Dummer. ゛☀
2017年10月02日
Scientific Name
Adenium boehmianum Schinz
Common Names
Bushman’s Poison, Bushman Poison, Bushmen’s Arrow Poison
Synonyms
Adenium obesum subsp. boehmianum
Scientific Classification
Family: Apocynaceae
Subfamily: Apocynoideae
Tribe: Wrightieae
Genus: Adenium
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.
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.
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.
Adenium boehmianum Schinz
Common Names
Bushman’s Poison, Bushman Poison, Bushmen’s Arrow Poison
Synonyms
Adenium obesum subsp. boehmianum
Scientific Classification
Family: Apocynaceae
Subfamily: Apocynoideae
Tribe: Wrightieae
Genus: Adenium
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.
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.
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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文章
Dummer. ゛☀
2017年10月01日
Scientific Name
Adenium obesum subsp. socotranum (Vierh.) Lavranos
Common Names
Socotran Desert Rose, Aden Rose of Socotra
Synonyms
Adenium socotranum
Scientific Classification
Family: Apocynaceae
Subfamily: Apocynoideae
Tribe: Wrightieae
Genus: Adenium
Description
Adenium obesum subsp. socotranum is by far the largest species, reaching a height of 15 feet (4.6 m) with a cylindrical trunk up to 8 feet (2.4 m) in diameter at the base. Plants rarely leaf out before mid summer, and produce stem growth for only a few weeks. The flowers are pink, up to 5 inches (13 cm) in diameter, and appear for a few weeks in spring while the plant is leafless.
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.
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.
Origin
It is endemic to the island of Socotra.
Adenium obesum subsp. socotranum (Vierh.) Lavranos
Common Names
Socotran Desert Rose, Aden Rose of Socotra
Synonyms
Adenium socotranum
Scientific Classification
Family: Apocynaceae
Subfamily: Apocynoideae
Tribe: Wrightieae
Genus: Adenium
Description
Adenium obesum subsp. socotranum is by far the largest species, reaching a height of 15 feet (4.6 m) with a cylindrical trunk up to 8 feet (2.4 m) in diameter at the base. Plants rarely leaf out before mid summer, and produce stem growth for only a few weeks. The flowers are pink, up to 5 inches (13 cm) in diameter, and appear for a few weeks in spring while the plant is leafless.
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.
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.
Origin
It is endemic to the island of Socotra.
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文章
Dummer. ゛☀
2017年09月23日
Adenium is a genus of flowering plants that originate from Africa. This genus contains approximately five species, although the genus name typically refers to Adenium obesum unless otherwise specified.
This plant is a small succulent shrub that produces red and white flowers up to 2 inches (5 cm) in diameter. Adenium can grow outside in warm climates; it’s also a houseplant in colder climates. Cuttings are the most common method of propagating Adenium.
Things You’ll Need
Gardening trowel, planting pot, perlite, peat moss, liquid fertilizer, slow-release fertilizer and sand.
Instructions
Obtain an Adenium cutting from a nursery. The nursery typically takes a 5-inch (12.5 cm) cutting from the end of a living stem and dips the cut end in a rooting hormone.
Fill a medium-size planting pot with a mixture of two parts sand, two parts peat moss and one part perlite. Place the cut end of the Adenium cutting about 2 inches (5 cm) deep in the soil medium. Water the cutting immediately.
Water the Adenium cutting every three days. The cutting should take root in two to six weeks. Apply a liquid fertilizer every two weeks during the growing season. Add a slow-release fertilizer in early summer and early fall. Adenium should achieve its adult size within three years.
Keep Adenium outside in full sun when the temperature is 80 degrees Fahrenheit (27 degrees Celsius) or higher. Move the plant to a southern windowsill in cooler weather. Adenium can be killed by prolonged temperatures of 35 degrees Fahrenheit (2 degrees Celsius) or colder.
This plant is a small succulent shrub that produces red and white flowers up to 2 inches (5 cm) in diameter. Adenium can grow outside in warm climates; it’s also a houseplant in colder climates. Cuttings are the most common method of propagating Adenium.
Things You’ll Need
Gardening trowel, planting pot, perlite, peat moss, liquid fertilizer, slow-release fertilizer and sand.
Instructions
Obtain an Adenium cutting from a nursery. The nursery typically takes a 5-inch (12.5 cm) cutting from the end of a living stem and dips the cut end in a rooting hormone.
Fill a medium-size planting pot with a mixture of two parts sand, two parts peat moss and one part perlite. Place the cut end of the Adenium cutting about 2 inches (5 cm) deep in the soil medium. Water the cutting immediately.
Water the Adenium cutting every three days. The cutting should take root in two to six weeks. Apply a liquid fertilizer every two weeks during the growing season. Add a slow-release fertilizer in early summer and early fall. Adenium should achieve its adult size within three years.
Keep Adenium outside in full sun when the temperature is 80 degrees Fahrenheit (27 degrees Celsius) or higher. Move the plant to a southern windowsill in cooler weather. Adenium can be killed by prolonged temperatures of 35 degrees Fahrenheit (2 degrees Celsius) or colder.
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文章
玲儿
2017年09月22日
アデニウムの基本情報
学名：Adenium
その他の名前：砂漠のバラ
科名 / 属名：キョウチクトウ科 / アデニウム属
特徴
アデニウムの仲間は、南アフリカ、南西アフリカ、ソコトラ島、アラビア半島原産です。美しい花が咲くものが多く、大きく肥大する幹や根が特徴の植物です。「砂漠のバラ」と呼ばれるものがよく流通していて、そのほかにも八重咲きや多様な花色の園芸品種がつくられています。
アデニウムは、株を大きくして花を楽しむ以外にも、独特のフォルムを生かし、盆栽のように仕立て、肥大した根や幹を楽しむこともできます。夏の暑さには強いですが、寒さには弱いので、休眠させて冬越しさせます。日光不足だと徒長するので、春から秋はよく日に当て、堅く締まった株にします。
種類（原種、園芸品種）
アデニウム・オベスム
Adenium obesum
ケニア、タンザニアなどの原産。「砂漠のバラ」と呼ばれ、赤〜ピンクの美しい花を咲かせる。花形や花色が異なるさまざまな個体がある。
アデニウム・ソコトラナム
Adenium socotranum
ソコトラ島原産の大型種。ピンクの小さな花がたくさん咲くので、大株に育てると満開のときの美しさは格別。
アデニウム・アラビカム
Adenium arabicum
アラビア半島原産。よく分枝し、基部が太りやすい。
学名：Adenium
その他の名前：砂漠のバラ
科名 / 属名：キョウチクトウ科 / アデニウム属
特徴
アデニウムの仲間は、南アフリカ、南西アフリカ、ソコトラ島、アラビア半島原産です。美しい花が咲くものが多く、大きく肥大する幹や根が特徴の植物です。「砂漠のバラ」と呼ばれるものがよく流通していて、そのほかにも八重咲きや多様な花色の園芸品種がつくられています。
アデニウムは、株を大きくして花を楽しむ以外にも、独特のフォルムを生かし、盆栽のように仕立て、肥大した根や幹を楽しむこともできます。夏の暑さには強いですが、寒さには弱いので、休眠させて冬越しさせます。日光不足だと徒長するので、春から秋はよく日に当て、堅く締まった株にします。
種類（原種、園芸品種）
アデニウム・オベスム
Adenium obesum
ケニア、タンザニアなどの原産。「砂漠のバラ」と呼ばれ、赤〜ピンクの美しい花を咲かせる。花形や花色が異なるさまざまな個体がある。
アデニウム・ソコトラナム
Adenium socotranum
ソコトラ島原産の大型種。ピンクの小さな花がたくさん咲くので、大株に育てると満開のときの美しさは格別。
アデニウム・アラビカム
Adenium arabicum
アラビア半島原産。よく分枝し、基部が太りやすい。
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文章
Dummer. ゛☀
2017年09月21日
Adenium obesum also known as Desert Rose, is a striking plant with swollen succulent stems and deep red flowers. The plant is deciduous in cooler winters, but it can be kept in leaf provided there is sufficient warmth and light water. There is no part of these plants that doesn’t command interest, from the dramatically swollen stems on older plants to the bright flowers to the tight clusters of narrow, green leaves.
Beware, though, the sap of the Desert Rose is poisonous and should never come into contact with children or pets. If you get sap on yourself while handling the plant, wash your hands immediately.
Growing Conditions
Light: Full sun. Perfect for a sunny window.
Water: Water during the summer and spring. Reduce water in the winter, but keep hydrated enough to retain its leaves.
Temperature: Keep at least 50ºF (10ºC) at all times; if you keep temperatures of 60ºF (16ºC) or higher during the winter, the plant may retain its leaves.
Soil: A well-drained succulent mix, with an ideal pH around 6.0 (slightly acidic).
Fertilizer: Fertilize during spring and summer with controlled-release fertilizer or liquid fertilizer according to label directions.
Propagation
Typically by seed. If your plant develops a seed pod, plant the seeds as soon as possible after the pod ripens to maximize chances of germination. The Desert Rose can be propagated from branch cuttings, but these plants often fail to develop the characteristic (and highly desired) bulbous stem.
Repotting
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. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot.
Grower’s Tips
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.
Beware, though, the sap of the Desert Rose is poisonous and should never come into contact with children or pets. If you get sap on yourself while handling the plant, wash your hands immediately.
Growing Conditions
Light: Full sun. Perfect for a sunny window.
Water: Water during the summer and spring. Reduce water in the winter, but keep hydrated enough to retain its leaves.
Temperature: Keep at least 50ºF (10ºC) at all times; if you keep temperatures of 60ºF (16ºC) or higher during the winter, the plant may retain its leaves.
Soil: A well-drained succulent mix, with an ideal pH around 6.0 (slightly acidic).
Fertilizer: Fertilize during spring and summer with controlled-release fertilizer or liquid fertilizer according to label directions.
Propagation
Typically by seed. If your plant develops a seed pod, plant the seeds as soon as possible after the pod ripens to maximize chances of germination. The Desert Rose can be propagated from branch cuttings, but these plants often fail to develop the characteristic (and highly desired) bulbous stem.
Repotting
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. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot.
Grower’s Tips
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.
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文章
Dummer. ゛☀
2017年09月19日
If you’re growing a Desert Rose (Adenium obesum), you probably know that it has an odd look, with a thick, succulent stem called a caudex that can become a bit grotesque as it enlarges. But its name comes from its desert-like native habitat and its colorful, showy flowers that resemble small roses. Usually easy to grow when given the right conditions, leaves on a Desert Rose might turn yellow and start to fall. This can stem from normal changes as it cycles through the year, or it might signal a problem that needs to be addressed.
A Natural Cycle
A Desert Rose is sensitive to frost but can grow outdoors year-round in USDA hardiness zones 10a through 12. In colder regions, it also does well as a potted plant, either kept indoors as a year-round houseplant or grown outdoors in summer and overwintered indoors.
Whether an outdoor plant in a warm-winter area or a houseplant, Desert Rose usually continues to grow throughout the year, so its leaves should stay green if it’s healthy and problem-free. But in cooler areas where night-time temperatures fall between 39 and 46 degrees Fahrenheit (4 and 8 degrees Celsius) and become 60 to 64 degrees Fahrenheit (15.5 to 18 degrees Celsius) during the day, a Desert Rose behaves like a deciduous plant, with its leaves gradually turning yellow and dropping. You can prevent a potted plant from losing leaves by moving it indoors before the air cools in the fall. If you grow the plant outdoors year-round and it becomes dormant in fall, it should put out new growth as soon as the air warms in the spring.
Possible Pests
A Desert Rose might attract one of several pests that can affect its leaves, causing them to yellow and eventually dry up. These include mealybugs, fluffy white insects that feed on the foliage. If you see these insects, destroy each one by touching it with a cotton swab dipped in rubbing alcohol.
Other possible pests include aphids — small greenish insects — and spider mites, which aren’t readily visible but make web-like coverings on leaves and buds. Both pests feed on plant juices and can cause leaves to yellow, wilt and fall off the plant. For a mild problem, use a strong jet of water to dislodge the pests. If the infestation is severe, spray the plant with insecticidal soap, diluted at a rate of 5 tablespoons per gallon of water. Repeat the spray every two weeks as needed.
Fungal Problems
If a Desert Rose is grown in overly wet conditions, it might develop fungal stem rot, which usually starts at a stem tip and could also affect leaves on that stem, causing them to turn yellow, then brown. Eventually, the stem darkens or turns yellow and becomes soft, with the problem moving down the stem toward the soil. To save the plant, prune the affected part of the stem back, making the cut behind the soft area and into healthy, firm tissue. Disinfect the knife or shears by wiping the blade with rubbing alcohol between each cut to prevent spreading disease.
A Natural Cycle
A Desert Rose is sensitive to frost but can grow outdoors year-round in USDA hardiness zones 10a through 12. In colder regions, it also does well as a potted plant, either kept indoors as a year-round houseplant or grown outdoors in summer and overwintered indoors.
Whether an outdoor plant in a warm-winter area or a houseplant, Desert Rose usually continues to grow throughout the year, so its leaves should stay green if it’s healthy and problem-free. But in cooler areas where night-time temperatures fall between 39 and 46 degrees Fahrenheit (4 and 8 degrees Celsius) and become 60 to 64 degrees Fahrenheit (15.5 to 18 degrees Celsius) during the day, a Desert Rose behaves like a deciduous plant, with its leaves gradually turning yellow and dropping. You can prevent a potted plant from losing leaves by moving it indoors before the air cools in the fall. If you grow the plant outdoors year-round and it becomes dormant in fall, it should put out new growth as soon as the air warms in the spring.
Possible Pests
A Desert Rose might attract one of several pests that can affect its leaves, causing them to yellow and eventually dry up. These include mealybugs, fluffy white insects that feed on the foliage. If you see these insects, destroy each one by touching it with a cotton swab dipped in rubbing alcohol.
Other possible pests include aphids — small greenish insects — and spider mites, which aren’t readily visible but make web-like coverings on leaves and buds. Both pests feed on plant juices and can cause leaves to yellow, wilt and fall off the plant. For a mild problem, use a strong jet of water to dislodge the pests. If the infestation is severe, spray the plant with insecticidal soap, diluted at a rate of 5 tablespoons per gallon of water. Repeat the spray every two weeks as needed.
Fungal Problems
If a Desert Rose is grown in overly wet conditions, it might develop fungal stem rot, which usually starts at a stem tip and could also affect leaves on that stem, causing them to turn yellow, then brown. Eventually, the stem darkens or turns yellow and becomes soft, with the problem moving down the stem toward the soil. To save the plant, prune the affected part of the stem back, making the cut behind the soft area and into healthy, firm tissue. Disinfect the knife or shears by wiping the blade with rubbing alcohol between each cut to prevent spreading disease.
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