Iris douglasiana
分類
家族Iridaceae
属Iris
ゾーン7
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Plants of the World Onlineについて
Iris douglasiana, commonly known as the Douglas iris, is a species of iris native to the coastal regions of California and southern Oregon. It is a rhizomatous geophyte, meaning it grows from rhizomes and is adapted to survive in temperate climates. The plant produces beautiful, showy flowers in shades of blue, purple, and occasionally white. It typically goes dormant in the summer months.
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Douglas iris
Iris beecheyana
Iris douglasiana f. alpha
Iris douglasiana var. alpha
Iris douglasiana var. altissima
Iris douglasiana var. beecheyana
Iris douglasiana var. bracteata
Iris douglasiana var. major
Iris douglasiana var. mendocinensis
Iris douglasiana var. nuda
Iris douglasiana var. oregonensis
Iris watsoniana
Limniris douglasiana
概要
詳細
お手入れ方法
Douglas iris prefers moderate temperatures and indirect bright light. It thrives in environments with moderate humidity and should be watered regularly, allowing the soil to dry out partially between waterings. The plant benefits from a temperate climate and should be protected from extreme heat or cold.土壌
Iris douglasiana prefers well-draining loam soil that retains some moisture but does not become waterlogged. A soil mix that includes organic matter can help provide the necessary nutrients and drainage. Ensure the soil pH is slightly acidic to neutral.肥料
Use a balanced fertilizer with a nutrient composition of 5-10-10. Fertilize the plant in the early spring before the growing season begins and again in the fall. Avoid over-fertilizing, as this can harm the plant.植え替え
Repot the Douglas iris every 2-3 years or when the plant outgrows its container. Repotting is best done in the fall after the plant has finished its growing season. Carefully divide the rhizomes and replant them in fresh soil.伝搬
Propagate Iris douglasiana by dividing the rhizomes in the fall. Gently lift the plant from the soil, separate the rhizomes, and replant them in well-prepared soil. Ensure each division has at least one growing point.剪定
Prune the Douglas iris after the flowering season to remove spent blooms and any dead or damaged foliage. This helps maintain the plant's appearance and encourages healthy growth. Cut back the foliage to about 6 inches above the ground.毒性
Iris douglasiana is not considered toxic to pets or humans. However, as with all plants, it is best to prevent pets and children from ingesting any part of the plant.追加
To encourage healthy growth, mulch around the base of the plant to retain moisture and suppress weeds. Regularly check for pests and diseases, and treat any issues promptly to prevent them from spreading.植物の手入れに革命を起こす
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