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Description
Polygonum Oxyspermum, commonly known as the Rayless Knotweed or the Pale Smartweed, is a herbaceous annual plant that belongs to the Polygonaceae family. It is native to Asia and Europe and has been introduced to other parts of the world as an ornamental plant. It grows up to a height of 2-3 feet and has a spread of 1-2 feet. The plant blooms during the summer season, producing small white or pink flowers. It is commonly found in waste places, along roadsides, and in disturbed areas.
Taxonomic Information
| Domain | Eukaryota |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Polygonaceae |
| Genus | Polygonum |
Appearance
Polygonum Oxyspermum has a slender stem that is erect or ascending. The stem is green or reddish in color and is often branched. The leaves are alternate and lanceolate, measuring about 2-4 inches in length. They are green in color and have a smooth texture. The flowers of the plant are small and arranged in racemes. They are white or pink in color and have no petals. The fruit of the plant is a small nutlet that is triangular in shape and has three sides.
Care Guide
Polygonum Oxyspermum is a low maintenance plant that requires minimal care. Here are some tips on how to care for it:- Water: The plant prefers moist soil, so it should be watered regularly. However, care should be taken not to overwater it, as this can lead to root rot.- Fertilization: The plant does not require much fertilizer. A slow-release fertilizer can be added to the soil once a year.- Soil: The plant prefers well-draining soil that is rich in organic matter.- Sunlight: The plant prefers full sun to partial shade. It can tolerate some shade, but too much shade can affect its growth.- Hardiness Zones: The plant is hardy in USDA zones 4-9.
Common Pests & Diseases
Polygonum Oxyspermum is relatively pest and disease-free. However, it can be susceptible to fungal diseases such as powdery mildew and root rot. Leaf spot and rust can also affect the plant. In terms of pests, the plant can be affected by aphids, spider mites, and whiteflies. Regular inspection and treatment with appropriate fungicides and insecticides can help prevent these problems.
Habitat
Polygonum Oxyspermum is commonly found in waste places, along roadsides, and in disturbed areas. It can also be found in fields and meadows. The plant prefers moist soil and is often found near water bodies such as streams and ponds.
Question and Answer
Q: Is Polygonum Oxyspermum an invasive species?
A: While the plant can spread easily, it is not considered an invasive species in most areas.
Q: Can Polygonum Oxyspermum be grown indoors?
A: The plant is not well-suited for indoor growing as it requires a lot of sunlight and space to grow.
Q: Is Polygonum Oxyspermum toxic to pets?
A: The plant is not toxic to pets, but care should be taken to prevent them from ingesting it as it can cause stomach upset.
Q: How long does it take for Polygonum Oxyspermum to flower?
A: The plant typically flowers during the summer season, which is about 2-3 months after planting.
Related Plants
– Polygonum aviculare- Polygonum persicaria- Polygonum lapathifolium- Polygonum hydropiper
References
– “Polygonum Oxyspermum.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=281493&isprofile=0&.- “Polygonum Oxyspermum.” PlantFiles, Dave’s Garden, www.davesgarden.com/guides/pf/go/129174/.
