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Description
Platystigma Linearis, also known as the African blue lily, is a stunning plant native to South Africa. It belongs to the family Iridaceae and is a perennial that grows up to 2 feet tall. The plant features striking blue flowers with yellow centers that bloom in winter and spring, making it a popular choice for landscaping and gardens.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Angiosperms |
| Class | Monocots |
| Order | Asparagales |
| Family | Iridaceae |
| Genus | Platystigma |
Appearance
The African blue lily has linear, grass-like leaves that grow up to 1 foot long and 0.5 inches wide. The leaves are dark green and form a dense rosette at the base of the plant. The blooms are the standout feature of this plant, with each flower measuring up to 2 inches wide. The petals are an intense blue color, while the center of the flower is yellow. The plant produces a seed pod after flowering, which contains many small black seeds.
Care Guide
Water
Platystigma Linearis requires regular watering to keep the soil moist but not waterlogged. Water the plant deeply once a week, or more frequently during hot, dry weather. Avoid getting water on the leaves or flowers, as this can cause fungal diseases.
Fertilization
Fertilize the African blue lily with a balanced, slow-release fertilizer in early spring, just as new growth appears. Repeat this process every 6 to 8 weeks during the growing season. Avoid over-fertilizing, as this can cause the plant to produce too much foliage and fewer flowers.
Soil
Platystigma Linearis prefers well-draining soil with a slightly acidic pH between 5.5 and 6.5. The plant can tolerate a range of soil types, including sandy or loamy soil. Add organic matter, such as compost or leaf mold, to the soil to improve its fertility and drainage.
Sunlight
The African blue lily requires full sun to partial shade to thrive. Plant it in a location that receives at least 6 hours of direct sunlight per day. In hot climates, provide some shade during the hottest part of the day to prevent the plant from wilting.
Hardiness Zones
Platystigma Linearis is hardy in USDA zones 8 to 10, where winter temperatures stay above 20°F (-6°C). In colder climates, the plant can be grown as an annual or overwintered indoors.
Common Pests & Diseases
The African blue lily is relatively pest and disease resistant, but it can be affected by fungal diseases such as leaf spot and crown rot. To prevent these problems, avoid overhead watering and provide good air circulation around the plant. Aphids and spider mites may occasionally infest the plant, but can be controlled with insecticidal soap or neem oil.
Habitat
Platystigma Linearis is native to the Western Cape province of South Africa, where it grows in rocky, well-draining soils in full sun to partial shade. The plant is adapted to a Mediterranean climate, with cool, wet winters and hot, dry summers.
Question and Answer
Q: Can Platystigma Linearis be grown indoors?
A: Yes, the plant can be grown in a bright, sunny window in a well-draining potting mix. Keep the soil moist but not waterlogged, and fertilize regularly during the growing season.
Q: How often should I divide my African blue lily?
A: Platystigma Linearis does not require frequent division, but can be divided every 3 to 5 years to rejuvenate the plant and prevent overcrowding.
Q: Can I propagate Platystigma Linearis from seed?
A: Yes, the plant can be propagated from seed. Sow the seeds in a well-draining potting mix in early spring, and keep the soil moist until germination occurs. Transplant the seedlings into individual pots when they are large enough to handle, and then plant them in the garden after the last frost.
Q: Does the African blue lily attract pollinators?
A: Yes, the plant is a favorite of bees, butterflies, and hummingbirds, which are attracted to its bright blue flowers and sweet nectar.
Related Plants
- Platystigma Blepharoides
- Platystigma Echinatum
- Platystigma Glaucescens
- Platystigma Laxum
- Platystigma Lineare
References
- “Platystigma Linearis.” PlantZAfrica. SANBI, n.d. Web. 14 Aug. 2021.
- “African Blue Lily Care.” Gardening Know How. N.p., n.d. Web. 14 Aug. 2021.
- “Platystigma.” Pacific Bulb Society. N.p., n.d. Web. 14 Aug. 2021.
