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Description
Thermopsis Rhombifolia, commonly known as Prairie Thermopsis, is a perennial plant that belongs to the Fabaceae family. It is native to North America, particularly in the Great Plains region. It grows up to 2 feet tall and 1 foot wide, with an upright stem and bushy foliage. The leaves are alternate, compound, and rhomboid-shaped, with a yellow-green color. In late spring and early summer, it produces beautiful yellow flowers in clusters.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Thermopsis |
Appearance
Thermopsis Rhombifolia has a distinctive appearance with its rhomboid-shaped leaves and bright yellow flowers. The leaves are arranged alternately on the stem, with each leaflet measuring around 2 inches long and 1 inch wide. The stem is upright and hairy, while the foliage is bushy and dense. In late spring and early summer, it produces clusters of 1-2 inch long yellow flowers that bloom for several weeks. The flowers have a distinct butterfly-like shape, with three petals and two sepals. The plant’s overall appearance is attractive and adds a pop of color to any garden or landscape.
Care Guide
Thermopsis Rhombifolia is a hardy plant that requires minimal care once established. Here are some care tips:
- Water: Water the plant regularly during the first growing season to establish a strong root system. Once established, it can tolerate drought conditions.
- Fertilization: Fertilize the plant in early spring with a balanced fertilizer to promote healthy growth.
- Soil: The plant prefers well-drained soil that is slightly alkaline. It can tolerate a wide range of soil types, including clay, loam, and sandy soils.
- Sunlight: The plant thrives in full sun to partial shade. It can handle hot and dry conditions but may require some shade in hotter climates.
- Hardiness Zones: Thermopsis Rhombifolia is hardy in USDA zones 4-8.
Common Pests & Diseases
Thermopsis Rhombifolia is generally a disease-resistant plant, but it can be susceptible to some pests and diseases. Here are some common issues:
- Aphids: Aphids can suck the sap from the plant, causing stunted growth and yellowing leaves. Use insecticidal soap or neem oil to control them.
- Spider Mites: Spider mites can cause yellow or brown spots on the leaves and produce webbing. Spray the plant with water to knock them off or use insecticidal soap.
- Powdery Mildew: Powdery mildew can cause a white, powdery coating on the leaves and stems. Improve air circulation and avoid overhead watering to prevent it.
Habitat
Thermopsis Rhombifolia is native to North America, particularly in the Great Plains region. It can be found in open prairies, dry hillsides, and along roadsides. It prefers well-drained soil and full sun to partial shade. It is a hardy plant that can tolerate drought conditions and hot summers.
Question and Answer
Q: Is Thermopsis Rhombifolia toxic to humans?
A: There is limited information on the toxicity of Thermopsis Rhombifolia. However, some species of Thermopsis contain alkaloids that can be toxic to livestock and humans if consumed in large quantities.
Q: Can Thermopsis Rhombifolia grow in containers?
A: Yes, Thermopsis Rhombifolia can be grown in containers as long as the container is large enough to accommodate its root system. Use a well-draining potting mix and water regularly.
Q: Can Thermopsis Rhombifolia be grown from seed?
A: Yes, Thermopsis Rhombifolia can be grown from seed. Sow the seeds in the fall or early spring in well-draining soil. Keep the soil moist until the seeds germinate.
Q: How often should I fertilize Thermopsis Rhombifolia?
A: Fertilize Thermopsis Rhombifolia once a year in early spring with a balanced fertilizer. Avoid over-fertilizing, as it can lead to excessive foliage growth and fewer flowers.
Related Plants
- Thermopsis Montana
- Thermopsis Turcica
- Thermopsis Villosa
- Thermopsis Lanceolata
References
- Missouri Botanical Garden. (n.d.). Thermopsis Rhombifolia. Retrieved January 8, 2022, from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b169
- North Carolina State University. (n.d.). Thermopsis Rhombifolia. Retrieved January 8, 2022, from https://plants.ces.ncsu.edu/plants/all/thermopsis-rhombifolia/
- USDA Plants Database. (n.d.). Thermopsis Rhombifolia. Retrieved January 8, 2022, from https://plants.usda.gov/home/plantProfile?symbol=THRO2
