Rudbeckia hirta
分類
家族Asteraceae
属Rudbeckia
ゾーン3
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Plants of the World Onlineについて
Rudbeckia hirta, commonly known as Black-eyed Susan, is a member of the Asteraceae family and the Rudbeckia genus. It is native to North America and can be found in meadows, prairies, and open woods. This plant can be either annual or perennial and is known for its bright yellow petals and dark brown center. It typically blooms from June to October and is a favorite among pollinators like bees and butterflies.
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Black-Eyed Susan
Black-Eyed-Susan
Blackeyed Susan
Centrocarpha Gracilis
Cherry Brandy
Helianthus Hirtus
Centrocarpha hirta
Rudbeckia amplectens
Rudbeckia brittonii
Rudbeckia discolor
Rudbeckia gracilis
Rudbeckia hirta f. hirta
Rudbeckia hirta var. brittonii
Rudbeckia hirta var. hirta
Rudbeckia hirta var. monticola
Rudbeckia monticola
Rudbeckia strigosa
概要
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詳細
お手入れ方法
Black-eyed Susans thrive in full sun and prefer moderate temperatures. They are relatively low-maintenance and can tolerate a range of soil conditions, though they prefer well-drained soil. Water the plant when the soil feels dry to the touch, and ensure it gets plenty of sunlight. They can handle moderate humidity levels and are quite hardy.土壌
Rudbeckia hirta prefers well-drained loamy soil but can adapt to various soil types, including clay and sandy soils. Good drainage is essential to prevent root rot. The soil should be kept moderately moist but not waterlogged.肥料
A balanced fertilizer with an N-P-K ratio of 10-10-10 can be applied in the spring to promote healthy growth. Fertilize once a month during the growing season for best results.植え替え
If growing in containers, repot Black-eyed Susans every 1-2 years or when the plant outgrows its pot. Choose a pot that is one size larger and ensure it has good drainage. Repot in the spring before the growing season begins.伝搬
Rudbeckia hirta can be propagated by seeds, division, or cuttings. Seeds can be sown directly in the garden in the spring or started indoors 6-8 weeks before the last frost. Division can be done in the spring or fall, and cuttings can be taken in the summer.剪定
Pruning is beneficial for Black-eyed Susans to encourage more blooms and maintain a tidy appearance. Deadhead spent flowers regularly to promote continuous blooming. Cut back the plant to the ground in late fall after the first frost.毒性
Rudbeckia hirta is not toxic to pets or humans. It is generally considered safe and non-toxic, making it a good choice for gardens frequented by children and pets.追加
Black-eyed Susans are excellent for attracting pollinators and can be used in wildflower gardens, borders, and as cut flowers. They are also deer-resistant, making them 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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