Helianthus salicifolius
分類
家族Asteraceae
属Helianthus
ゾーン4
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Plants of the World Onlineについて
Helianthus salicifolius, commonly known as the willowleaf sunflower, is a perennial plant in the Asteraceae family. Native to North America, it is known for its tall, slender stems and narrow, willow-like leaves. The plant produces bright yellow flowers in late summer to fall. It thrives in temperate climates and can grow up to 8 feet tall.
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Willowleaf Sunflower
Helianthus filiformis
Helianthus ×filiformis
Helianthus orgyalis
概要
詳細
お手入れ方法
Willowleaf sunflower prefers full sun and moderate temperatures. It should be watered regularly but allowed to dry out partially between waterings. The plant thrives in moderate humidity and should be protected from extreme cold. Regular pruning helps maintain its shape and encourages more blooms.土壌
Helianthus salicifolius prefers well-draining loamy soil. It can tolerate a range of soil types but performs best in soil that retains some moisture without becoming waterlogged. Good drainage is essential to prevent root rot.肥料
A balanced fertilizer with an N-P-K ratio of 10-10-10 is suitable for this plant. Fertilize in the growing season, typically once a month, to support healthy growth and flowering.植え替え
Repotting is generally not necessary for outdoor plants, but if grown in containers, repot every 2-3 years to refresh the soil and provide more space for root growth. Choose a slightly larger pot and ensure good drainage.伝搬
Propagation can be done through seeds or division. Seeds should be sown in spring, while division is best done in early spring or fall. Divide the root clumps and replant them in well-prepared soil.剪定
Pruning is beneficial for Helianthus salicifolius. Cut back the stems in late winter or early spring to encourage new growth. Deadheading spent flowers can also promote more blooms.毒性
Helianthus salicifolius is not toxic to pets or humans. It is safe to grow in gardens where children and pets are present.追加
This plant can be a striking addition to a garden due to its height and bright flowers. It can also attract pollinators like bees and butterflies, making it a great choice for a pollinator-friendly garden.植物の手入れに革命を起こす
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