Lehua tree (Metrosideros polymorpha)
Also known as: ʻōhiʻa lehua
The Lehua tree, scientifically known as Metrosideros polymorpha, is common in Hawaii and comes in various forms. Its wood is popular for use in flooring and fences due to its attractive appearance and ability to polish well.
In This Article
Attributes of Lehua tree
Lifespan
Perennial
Plant Type
Tree, Shrub
Plant Height
6 to 60 feet (2 to 18 meters)
Spread
Up to 30 feet (9 meters)
Leaf Color
Dark green to silvery-green
Flower Size
1 to 1.5 inches (2.5 to 3.8 cm)
Flower Color
Red, sometimes yellow or orange
Images of Lehua tree
Quickly Identify Lehua tree
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Metrosideros polymorpha can be identified by its leathery, oblong leaves that can vary greatly in size and shape. The tree produces striking clusters of flowers, typically red but sometimes yellow or orange, with numerous stamens emerging in a brush-like pattern. The bark is rough and varies from light to dark brown.
Scientific Classification of Lehua tree
Phylum
Vascular plants
Class
Dicotyledons
Order
Myrtle order
Family
Myrtle
Genus
Metrosideros
Species
Lehua tree
Planting and Growing of Lehua tree
Care Difficulty
Moderate
Watering Schedule
Every 2 days
Sunlight Requirements
Full sun
Sunshine Duration
6-12 hours
Ideal Temperature
65-75℉
Soil Type
Potting Mix, Peat Mix
Soil pH
4.5-7.4
Fertilizer Type
Balanced
Pruning Season
Spring, Summer
Pruning Area
Branches, Leaves
Pruning Frequency
2 times a year
Repotting Season
Spring
Pot Type
Plastic, Ceramic
How to Water Lehua tree?
Metrosideros polymorpha requires a balanced watering approach. Ensure the soil is evenly moist but not waterlogged. Aim for about 500ml of water per session, ensuring the top inch of soil feels slightly dry before watering again.
What are the symptoms of an underwatered Lehua tree?
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What should I do if my Lehua tree is not getting enough water?
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What are the symptoms of an overwatered Lehua tree?
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How to save an overwatered Lehua tree?
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What Are the Sunlight Requirements for Lehua tree?
Metrosideros polymorpha thrives in full sun to partial sun, benefiting from consistent light that supports active growth and a robust blooming cycle, enhancing aesthetic and ecological value.
How can Metrosideros polymorpha achieve ideal lighting?
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What are the solutions to ensure optimal lighting?
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What benefits does optimal lighting bring to Metrosideros polymorpha?
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What Is the Ideal Temperature Range for Lehua tree?
The ideal temperature range for Metrosideros polymorpha is between 65°F and 75°F. This range ensures optimal growth and development, allowing the plant to thrive. Within this temperature bracket, the environmental conditions mimic the plant's natural habitat closely, promoting healthy foliage and vibrant blooming.
What Soil is Best for Lehua tree?
Metrosideros polymorpha thrives in well-drained soils because they prevent waterlogging, which safeguards the roots from rot. Such soils facilitate proper air circulation around the roots, enhancing plant health and promoting vigorous growth. This plant prefers nutrient-rich soil, as it supplies essential minerals for growth and resilience against pests. Soil enriched with organic matter boosts the plant's defense mechanisms, supporting vibrant foliage and optimal flowering. Metrosideros polymorpha requires soil that maintains moderate moisture without drying out. Proper moisture helps the plant to sustain its lush appearance and continual growth, particularly in drier climates.
How to Fertilize Lehua tree?
Metrosideros polymorpha is a resilient plant with moderate nutrient needs. When fertilizing, it's beneficial to use a balanced fertilizer, such as a 10-10-10 formula. For liquid fertilizer, mix one tablespoon per gallon of water, ensuring the soil is moist before application to prevent root burn. With slow-release fertilizers, apply about three tablespoons per square foot, distributing evenly around the base of the plant.
How to Prune Lehua tree?
Begin by removing any dead or diseased branches. Cutting these areas not only improves the plant’s appearance but also prevents the spread of disease to healthy parts of the plant. Trim branches to maintain a rounded, compact shape. This not only enhances visual appeal but also ensures even sunlight distribution across the plant, promoting balanced growth and better flowering. Look for branches that are crossing or congested. Prune these sections to increase airflow and light penetration, reducing the risk of fungal infections and encouraging robust, healthy growth throughout the plant.
More About Pruning Techniques→
How to Propagate Lehua tree plant?
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Collect mature seeds from the plant. Ensure they are fully developed to maximize germination rates. Clean and dry the seeds before sowing them in the seed tray.
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Select healthy branches for cutting. Each cutting should be 4-6 inches long with several leaves. Remove the lower leaves and dip the cut end in rooting hormone to promote root development.
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Sow the seeds or plant the cuttings in suitable soil. Use a light and well-draining potting mix to ensure proper aeration and support the juvenile plant's growth.
How to Repot Lehua tree plant?
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Repotting Metrosideros polymorpha should be done when you notice roots protruding from the drainage holes or when the soil seems to dry out much quicker than before. These are clear signs that your plant has outgrown its current container, and it's time for a fresh start with more room for root expansion to ensure continual healthy growth.
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Selecting an appropriate pot is crucial for this species. Opt for a container that is one size larger than the current one and ensure it has adequate drainage holes. A larger pot provides the roots with necessary space to grow and prevents waterlogging, which can lead to root rot, ultimately ensuring the plant thrives post-repotting.
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For Metrosideros polymorpha, a well-draining potting mix is essential. Look for a blend that contains components like perlite or coarse sand to enhance drainage. This kind of soil prevents waterlogged conditions, reduces the risk of root rot, and supports the plant’s vigorous and healthy development.
