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Description
Amsonia Tabernaemontana, commonly known as Eastern Bluestar or Willow Amsonia, is a perennial herbaceous plant that belongs to the Apocynaceae family. It is native to the eastern United States and can grow up to 3 feet tall and 2 feet wide. The plant has a clumping habit and produces a profusion of blue, star-shaped flowers in late spring to early summer.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Amsonia |
Appearance
Amsonia Tabernaemontana has a neat, upright growth habit with narrow, lance-shaped leaves that are about 3 to 4 inches long. The leaves are arranged alternately on the stem and have a smooth texture. The plant produces clusters of star-shaped flowers that are 1 inch wide and have five pale blue or white petals. The flowers are arranged in terminal clusters that can be up to 6 inches wide. After flowering, the plant produces small, elongated seed pods that are about 2 inches long.
Care Guide
To care for Amsonia Tabernaemontana, the following factors should be considered:
Water
The plant prefers well-drained soil and moderate watering. Water the plant deeply once a week, especially during the growing season. Avoid overwatering, as it can lead to root rot.
Fertilization
Fertilize the plant in the spring with a balanced, slow-release fertilizer. Avoid overfertilizing, as it can lead to excessive foliage growth at the expense of flower production.
Soil
The plant prefers well-drained soil with a pH between 6.0 and 7.0. Amend heavy clay soils with organic matter to improve drainage.
Sunlight
Amsonia Tabernaemontana thrives in full sun to partial shade. It can tolerate some shade but may produce fewer flowers.
Hardiness Zones
The plant is hardy in USDA zones 3 to 9.
Common Pests & Diseases
Amsonia Tabernaemontana is relatively pest and disease-free. However, it may occasionally be affected by spider mites or leaf spot. Spider mites can be controlled with insecticidal soap, while leaf spot can be prevented by avoiding overhead watering.
Habitat
Amsonia Tabernaemontana is native to the eastern United States, where it grows in moist meadows, open woods, and stream banks. It prefers well-drained soils and can tolerate some drought.
Question and Answer
Q: Can Amsonia Tabernaemontana be grown in containers?
A: Yes, the plant can be grown in containers, as long as they are large enough to accommodate the plant’s root system.
Q: Does Amsonia Tabernaemontana attract butterflies?
A: Yes, the plant’s flowers are attractive to butterflies and other pollinators.
Q: How often should I prune Amsonia Tabernaemontana?
A: Prune the plant in early spring before new growth appears. Remove any dead or damaged stems and shape the plant as desired.
Q: Can Amsonia Tabernaemontana be propagated by division?
A: Yes, the plant can be propagated by division in the spring or fall. Dig up the plant and separate the root ball into smaller sections, making sure each section has a few healthy stems and roots. Replant the sections in well-drained soil.
Related Plants
Other species in the Amsonia genus include:
- Amsonia ciliata
- Amsonia hubrichtii
- Amsonia illustris
- Amsonia jonesii
- Amsonia kearneyana
References
- Missouri Botanical Garden: Amsonia Tabernaemontana
- North Carolina State University: Amsonia Tabernaemontana
- University of Arkansas Division of Agriculture: Eastern Bluestar
- University of Illinois Extension: Willow Amsonia
