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Description
Caltha Obtusa, commonly known as the Rocky Mountain marsh-marigold, is a perennial herbaceous plant that belongs to the Ranunculaceae family. It is native to the mountainous regions of Western North America, including Alaska, British Columbia, and California. The plant has dark green leaves and bright yellow flowers that bloom in late spring to early summer.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Ranunculales |
| Family | Ranunculaceae |
| Genus | Caltha |
Appearance
Caltha Obtusa grows up to 60 cm tall and has leaves that are heart-shaped and deeply lobed. The flowers are bright yellow and have five to nine petals that are arranged in a cup-shaped form. The plant blooms in late spring to early summer and produces a large number of flowers. The flowers are followed by seed pods that contain numerous small seeds.
Care Guide
To grow Caltha Obtusa successfully, it is important to provide it with the right care. Here are some tips for caring for this plant:- Water: Caltha Obtusa prefers moist soil, so it is important to keep the soil consistently moist. Water the plant regularly, especially during hot and dry periods.- Fertilization: Fertilize the plant with a balanced fertilizer once a month during the growing season.- Soil: Caltha Obtusa grows best in moist, well-drained soil that is rich in organic matter.- Sunlight: The plant prefers partial to full shade, although it can tolerate some direct sunlight.- Hardiness Zones: Caltha Obtusa is hardy in USDA zones 4 to 8.
Common Pests & Diseases
Caltha Obtusa is generally free from major pest and disease problems. However, it can be affected by powdery mildew, rust, and leaf spot. To prevent these problems, make sure to provide the plant with good air circulation, avoid overcrowding, and remove any infected leaves or plants.
Habitat
Caltha Obtusa is native to the mountainous regions of Western North America, including Alaska, British Columbia, and California. It grows in wet meadows, stream banks, and other wetland areas. The plant prefers cool and moist environments and can tolerate cold temperatures.
Question and Answer
Q: Is Caltha Obtusa poisonous?
A: No, Caltha Obtusa is not poisonous to humans or animals.
Q: How often should I water Caltha Obtusa?
A: Water the plant regularly, especially during hot and dry periods. Keep the soil consistently moist.
Q: Can Caltha Obtusa tolerate direct sunlight?
A: Caltha Obtusa prefers partial to full shade, although it can tolerate some direct sunlight.
Q: What is the hardiness zone for Caltha Obtusa?
A: Caltha Obtusa is hardy in USDA zones 4 to 8.
Related Plants
Here are some plants that are related to Caltha Obtusa:- Caltha Palustris (Marsh Marigold)- Ranunculus Acris (Meadow Buttercup)- Aquilegia Formosa (Western Columbine)- Delphinium Occidentale (Western Larkspur)
References
– “Caltha obtusa.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c285.- “Caltha obtusa.” Plant Information Online, www.plantinfo.umn.edu/node/1470403.- “Caltha obtusa.” United States Department of Agriculture, Natural Resources Conservation Service, plants.usda.gov/core/profile?symbol=CAOB.
