Rhododendron maximum
分類
家族Ericaceae
属Rhododendron
ゾーン4
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Plants of the World Onlineについて
Rhododendron maximum, commonly known as the Great Laurel or Rosebay Rhododendron, is a species of flowering plant in the family Ericaceae. It is native to the eastern United States, particularly in the Appalachian Mountains. This evergreen shrub can grow up to 15 feet tall and is known for its large, leathery leaves and clusters of pink to white flowers. It has a dormancy period during the winter months.
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Great Laurel
Great-Laurel
American rhododendron
Great rhododendron
Rhododendron maximum f. maximum
概要
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詳細
お手入れ方法
Rhododendron maximum requires indirect bright light and moderate temperatures. It thrives in high humidity and should be watered regularly to keep the soil evenly moist. Avoid letting the soil dry out completely. This plant prefers cooler temperatures and should be protected from extreme heat.土壌
The Great Laurel prefers well-draining, loamy soil that is rich in organic matter. The soil should be kept consistently moist but not waterlogged. It thrives in acidic soil with a pH around 5.5.肥料
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize the plant in early spring and again in late summer. Avoid over-fertilizing, as this can damage the plant.植え替え
Repot Rhododendron maximum every 2-3 years or when it outgrows its container. Choose a pot that is slightly larger than the current one and use a well-draining, acidic potting mix. Repot in early spring before new growth begins.伝搬
Propagate Rhododendron maximum through semi-hardwood cuttings taken in late summer. Dip the cuttings in rooting hormone and plant them in a well-draining, acidic soil mix. Keep the cuttings in a humid environment until they root.剪定
Prune Rhododendron maximum after it finishes flowering in late spring. Remove dead or diseased branches and shape the plant as needed. Avoid heavy pruning, as this can reduce flowering.毒性
Rhododendron maximum is toxic to pets and humans. All parts of the plant contain grayanotoxins, which can cause symptoms such as vomiting, diarrhea, and difficulty breathing if ingested. Keep this plant out of reach of children and pets.植物の手入れに革命を起こす
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