Helenium autumnale
分類
家族Asteraceae
属Helenium
ゾーン3
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Plants of the World Onlineについて
Helenium autumnale, commonly known as Sneezeweed, is a perennial plant in the Asteraceae family. It is native to North America and typically found in moist meadows and along stream banks. The plant produces bright yellow, daisy-like flowers from late summer to fall. It has a dormancy period during the winter months.
としても知られている
Common Sneezeweed
Fall Sneezeweed
Helenia Autumnalis
Helenia Decurrens
Sneezeweed
Heleniastrum autumnale
Heleniastrum montanum
Helenium altissimum
Helenium autumnale var. canaliculatum
Helenium autumnale var. fylesii
Helenium autumnale var. grandiflorum
Helenium autumnale var. montanum
Helenium autumnale var. parviflorum
Helenium canaliculatum
Helenium commutatum
Helenium grandiflorum
Helenium latifolium
Helenium longifolium
Helenium macranthum
Helenium montanum
Helenium parviflorum
Helenium pubescens
Helenium pumilum
Helenium tubuliflorum
概要
詳細
お手入れ方法
Helenium autumnale thrives in full sun and requires moderate temperatures. It prefers evenly moist soil and benefits from regular watering, especially during dry periods. The plant can tolerate a range of humidity levels but prefers moderate humidity. It is relatively easy to care for but does require some attention to watering and light conditions.土壌
Helenium autumnale prefers loamy soil that is well-draining yet retains moisture. The soil should be rich in organic matter to support its growth. It can tolerate a range of pH levels but prefers slightly acidic to neutral soil.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 mid-summer to support its growth and flowering. Avoid over-fertilizing as it can lead to excessive foliage growth at the expense of flowers.植え替え
Helenium autumnale can be repotted in early spring before new growth begins. Choose a pot that is slightly larger than the current one and use fresh, well-draining soil. Ensure the plant is well-watered after repotting to help it establish in its new container.伝搬
The plant can be propagated by division or from seeds. Division is best done in early spring or late fall. Dig up the plant and carefully separate the clumps, then replant them in well-prepared soil. Seeds can be sown in the spring after the last frost.剪定
Pruning is beneficial for Helenium autumnale to encourage bushier growth and more flowers. Cut back the stems by one-third in early summer. Deadhead spent flowers to prolong the blooming period. In late fall, cut the plant back to the ground to prepare it for winter dormancy.毒性
Helenium autumnale is not considered toxic to pets or humans. However, the plant's common name, Sneezeweed, comes from its historical use in making snuff, which can cause sneezing if inhaled.追加
Helenium autumnale is a great addition to pollinator gardens as it attracts bees and butterflies. It is also deer-resistant, making it a good choice for gardens in areas with high deer populations.植物の手入れに革命を起こす
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