Justicia (Justicia rizzinii)
rizzinii
About this plant
Justicia rizzinii is a shrub known for its attractive foliage and tubular flowers. It is often grown as an ornamental plant in gardens and landscapes. The plant is appreciated for its ability to thrive in shaded areas and its drought tolerance. It can add color and texture to garden beds or containers.
Taxonomy
Higher classification: Order Lamiales
Origin & Distribution
- Native region
- Brazil
- Distribution
- Native to Brazil, cultivated in tropical and subtropical regions worldwide.
Care
- Suitable locations
- Outdoor, Balcony, Greenhouse, Indoor
- Preferred window facing
- East-facing, West-facing, South-facing
- USDA hardiness zones
- 9–11
- Soil pH
- 6.0–7.5 (slightly acidic to neutral)
- Soil type
- well-draining loam or potting mix
Watering. Water when the top inch of soil feels dry. Avoid waterlogging to prevent root rot.
Fertilizing. Feed with a balanced, water-soluble fertilizer every 4 to 6 weeks during the growing season (spring and summer). Reduce feeding in fall and winter.
Justicia rizzinii is a moderately easy plant to care for. It prefers partial shade and well-draining soil. Overwatering can cause root problems, so allow the soil to dry slightly between waterings. It tolerates some drought and is fairly resistant to pests.
Propagation
- Propagation methods
- Cuttings, Seeds
Ornamental features
- Flowering
- Yes
- Flowering period
- spring–summer
Colorful tubular flowers and lush green leaves provide ornamental appeal.
Toxicity & Safety
Not known to be toxic to humans or pets, but avoid ingestion and contact with sap if sensitive.
Allergy information
Justicia rizzinii may cause mild skin irritation in sensitive individuals due to contact with its sap. It is not known to produce airborne pollen that causes allergies. To reduce exposure, avoid touching the sap and wash hands after handling the plant.
Common problems
Common problems include root rot from overwatering and leaf yellowing if light is too low. Occasionally, it may attract aphids or spider mites.
Uses
Primarily grown as an ornamental plant for gardens and indoor decoration due to its attractive flowers and foliage.
Notes
Prune after flowering to maintain shape and encourage bushier growth. Repot young plants every 2 years to refresh soil. Protect from frost and cold drafts.