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Description
Polystichum Lemmonii, commonly known as Lemmon’s holly fern, is a species of fern native to North America. It belongs to the family Dryopteridaceae and is widely cultivated as an ornamental plant for its attractive foliage. The plant is evergreen and can grow up to 2 feet tall and wide.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Pteridophyta |
| Class | Polypodiopsida |
| Order | Polypodiales |
| Family | Dryopteridaceae |
| Genus | Polystichum |
Appearance
The leaves of Polystichum Lemmonii are leathery and dark green in color. They are pinnately divided and can grow up to 2 feet long. The leaflets are slightly curved and have serrated edges. The plant produces spores on the undersides of the leaves which can give a brownish appearance. The fronds are upright and arching, creating a dense clump of foliage.
Care Guide
Polystichum Lemmonii prefers well-drained soil and partial shade to full shade. It can tolerate some sun but not direct sunlight. The plant needs regular watering and should not be allowed to dry out completely. Fertilize once a month during the growing season with a balanced fertilizer. The plant is hardy in USDA zones 5-9.
Common Pests & Diseases
Polystichum Lemmonii is generally pest and disease-free. However, it can be susceptible to aphids, scale insects, and mealybugs. These pests can be controlled with insecticidal soap or horticultural oil. The plant can also be affected by fungal diseases such as root rot and leaf spot. These can be prevented by ensuring good drainage and proper air circulation.
Habitat
Polystichum Lemmonii is native to North America and can be found in moist woodland areas, often growing on slopes or rocky outcroppings. The plant prefers acidic soil and can tolerate cooler temperatures.
Question and Answer
Q: Can Polystichum Lemmonii be grown indoors?
A: Yes, Polystichum Lemmonii can be grown indoors in a bright, humid location.
Q: How often should I water Polystichum Lemmonii?
A: Water Polystichum Lemmonii regularly, keeping the soil moist but not waterlogged.
Q: What is the best fertilizer for Polystichum Lemmonii?
A: Use a balanced fertilizer once a month during the growing season.
Q: Can Polystichum Lemmonii tolerate frost?
A: Yes, Polystichum Lemmonii is hardy in USDA zones 5-9 and can tolerate frost.
Related Plants
- Polystichum Acrostichoides
- Polystichum Munitum
- Polystichum Setiferum
- Polystichum Polyblepharum
References
- “Polystichum Lemmonii.” Missouri Botanical Garden. Accessed 20 July 2021. <https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=279714>.
- “Polystichum Lemmonii.” Royal Horticultural Society. Accessed 20 July 2021. <https://www.rhs.org.uk/plants/18650/polystichum-lemmonii/details>.
- “Polystichum Lemmonii.” Plant Lust. Accessed 20 July 2021. <https://www.plantlust.com/plant-finder/polystichum-lemmonii/>.
