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Description
Epilobium Tetragonum, commonly known as Square-Stemmed Willowherb, is a herbaceous perennial plant that belongs to the Onagraceae family. It is native to North America and can be found in many regions, including Alaska, Canada, and the United States. It grows up to 3 feet tall and has square stems that are slightly hairy. The leaves are lance-shaped and have a smooth texture. Epilobium Tetragonum produces small pink or purple flowers that bloom from June to September.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Myrtales |
| Family | Onagraceae |
| Genus | Epilobium |
Appearance
Epilobium Tetragonum has square stems that are about 1/4 inch thick and are covered in fine hairs. The leaves are alternate, lance-shaped, and have a smooth texture. They are 3-8 cm long and 5-20 mm wide. The flowers are small, pink or purple, and have four petals. They bloom from June to September and are about 1 cm in diameter. The fruit is a cylindrical capsule that is about 2 cm long and contains numerous seeds.
Care Guide
Epilobium Tetragonum is a hardy plant that is easy to care for. Here are some tips for growing and maintaining this plant:
Water: Epilobium Tetragonum prefers moist soil, so it is important to water it regularly. However, make sure not to overwater it as this can cause root rot.
Fertilization: This plant does not require much fertilizer. However, you can feed it with a balanced fertilizer once a month during the growing season.
Soil: Epilobium Tetragonum prefers well-drained soil that is rich in organic matter. It can grow in a wide range of soil types, including sand, clay, and loam.
Sunlight: This plant prefers full sun to partial shade. It can tolerate some shade, but it will not bloom as well.
Hardiness Zones: Epilobium Tetragonum is hardy in USDA zones 3 to 9.
Common Pests & Diseases
Epilobium Tetragonum is relatively resistant to pests and diseases. However, it can be affected by some common garden pests, including aphids and spider mites. These pests can be controlled by using insecticidal soap or neem oil. This plant is also susceptible to fungal diseases such as powdery mildew and rust. These diseases can be prevented by keeping the foliage dry and providing good air circulation.
Habitat
Epilobium Tetragonum is native to North America and can be found in many regions, including Alaska, Canada, and the United States. It grows in a wide range of habitats, including open forests, meadows, and wetlands. This plant prefers moist soil and can tolerate some shade.
Question and Answer
Q: Is Epilobium Tetragonum toxic to pets?
A: There is no evidence that Epilobium Tetragonum is toxic to pets. However, it is always a good idea to keep pets away from plants that they are not familiar with.
Q: Can Epilobium Tetragonum be grown in containers?
A: Yes, Epilobium Tetragonum can be grown in containers. However, make sure to use a large container with good drainage and a rich, well-draining soil mix.
Q: Can Epilobium Tetragonum be propagated by cuttings?
A: Yes, Epilobium Tetragonum can be propagated by stem cuttings taken in the spring or summer. Make sure to use a sharp, sterile knife and dip the cut end in rooting hormone before planting it in a pot filled with moist soil.
Q: How often should Epilobium Tetragonum be pruned?
A: Epilobium Tetragonum does not require much pruning. However, you can remove any dead or damaged stems in the spring to promote new growth.
Related Plants
Here are some plants that are related to Epilobium Tetragonum:
- Epilobium Angustifolium (Fireweed)
- Epilobium Ciliatum (Fringed Willowherb)
- Epilobium Hirsutum (Great Hairy Willowherb)
- Epilobium Palustre (Marsh Willowherb)
References
- “Epilobium Tetragonum.” USDA Plants Database.
- “Square-Stemmed Willowherb.” Montana Field Guide.
- “Epilobium Tetragonum.” Missouri Botanical Garden.
