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Myrtaceae TREE OUTDOOR Placement Primary: Medicinal Other Aromatic

Tea Tree

Melaleuca alternifolia

Identified By Unknown Guest

The tea tree, scientifically known as Melaleuca alternifolia, is a small species of tree or shrub in the myrtle family, Myrtaceae. Native to Australia, it is predominantly found in coastal regions and along streams in new South Wales and Queensland. The plant is widely celebrated for its essential oil, which is extracted from its leaves and commonly known as tea tree oil. This oil possesses powerful antimicrobial, antifungal, and anti-inflammatory properties, making it a popular ingredient in various skin care products, topical treatments, and household cleaners. The tea tree features papery bark, needle-like leaves, and small white fluffy flower spikes that bloom in the spring and summer months.

Also known as: Narrow-leaved Paperbark Ti-tree

Toxicity & Safety

Is Tea Tree toxic to pets?

Yes, toxic to pets.

Tea tree plant parts and especially its concentrated essential oil are extremely toxic to cats and dogs. Ingestion or topical application of the oil can lead to severe poisoning, central nervous system depression, muscle tremors, weakness, uncoordination, hypothermia, and potentially fatal outcomes. Pet owners should ensure that both the living plant and any essential oil products are kept completely out of reach of domestic animals.

Is Tea Tree toxic to humans?

Yes, toxic to humans.

While topical application of diluted tea tree oil is generally safe for most humans, ingestion of the oil is highly toxic and can cause systemic poisoning. Swallowing tea tree oil can lead to confusion, inability to walk, unsteady gait, severe rashes, blood cell abnormalities, and coma. It should never be ingested orally, and pure undiluted oil should be avoided on sensitive skin to prevent severe irritation or allergic contact dermatitis.

Is Tea Tree safe during pregnancy?

Caution advised during pregnancy.

Pregnant and breastfeeding individuals should exercise extreme caution with tea tree products. Oral consumption is strictly unsafe due to systemic toxicity risks. While topical application in highly diluted forms is sometimes considered acceptable, it is generally recommended to consult a healthcare professional before use during pregnancy to prevent any potential adverse effects on hormonal balance or fetal development.

Growth & Dimensions

Height 200 - 700 cm
Width 150 - 400 cm
Growth Rate Moderate
Care Level Easy
Lifespan Perennial

Ideal Environment

Temperature 5°C - 35°C
Sunlight Hours 6 - 10 hrs/day
Sun Exposure Full sun
Soil pH 4.5 - 6.5
Watering Interval 5 - 12 days
Humidity 50.00% - 90.00%
USDA Zone 9 - 11

Coastal Eastern Australia

Climate: Thrives in warm temperate to subtropical climates with high humidity, reliable rainfall, and frost-free winter conditions.

Soils: Sandy loam Alluvial soils Acidic soils
Annual Rainfall: 1000 - 2000 mm

Native Regions

Malaysia
Australia (AU – Oceania)
Caledonia
New South Wales
Queensland

How to Care for Tea Tree

How should I handle sunlight?

Plant in an area that receives full sun for optimal growth and oil production.

How should I handle soil and fertilizer?

Thrives in sandy loams or acidic, damp soils. Fertilize sparingly in spring with a low-phosphorus balanced fertilizer.

How should I handle pruning?

Prune lightly after flowering to encourage bushier growth and maintain desired shape.

How should I handle watering your tea tree?

Tea trees thrive in moist soils, particularly when young, and benefit from regular deep watering during dry spells. While they appreciate consistent moisture, they can tolerate occasional brief periods of drought once established. Ensure you water deeply at the base of the plant, allowing the top layer of soil to dry slightly between watering sessions, but never let the root system dry out completely to prevent leaf drop and stress.

How to Propagate Tea Tree

How to propagate Tea Tree by seed?

Surface sow tiny seeds on moist seed-starting mix in warm, bright conditions.

How to propagate Tea Tree by cutting?

Select healthy semi-hardwood stem cuttings measuring approximately 10 to 15 centimeters in length from an established, mature tea tree during the active growing season. Remove the lower leaves from the lower half of the cutting to expose leaf nodes. Dip the cut end into rooting hormone powder to stimulate rapid root development. Plant the cutting into a small container filled with a sterile, well-draining propagation medium consisting of perlite and peat. Place the container in a warm, bright location out of direct sunlight, and maintain high humidity by covering it with a clear plastic dome or bag until roots successfully establish.

Common Diseases & Pests of Tea Tree

What is Root Rot and how is it treated?

Fungal
Symptoms:

Affected tea tree plants exhibit premature leaf yellowing, wilting despite adequate soil moisture, stunted growth, and eventual dieback of branches. The root system turns brown, mushy, and emits a foul odor due to fungal decay.

Treatment:

Remove the affected plant from poorly drained soil, trim away infected and decaying roots using sterilized pruning shears, and replant in fresh, well-draining soil with appropriate fungicide treatment if necessary.

Prevention:

Ensure planting sites have excellent drainage and avoid overwatering the plant, especially in heavy clay soils that tend to retain excess moisture for prolonged periods.

Properties & Benefits of Tea Tree

Bears Fruit Aromatic Plant

Uses & Health Benefits

What are the benefits of antimicrobial and skin care benefits in Tea Tree?

Tea tree oil extracted from the leaves contains active compounds such as terpinen-4-ol, which exhibit powerful antimicrobial and anti-inflammatory properties. These components make it exceptionally effective for managing acne-prone skin, soothing minor cuts, treating athlete's foot, and reducing dandruff when incorporated into hair care formulations. Regular application helps inhibit bacterial and fungal growth on the skin surface without causing excessive damage to surrounding healthy tissue.

Precautions: Always dilute pure essential oil with a carrier oil before topical application to prevent skin irritation, and perform a patch test first. Never ingest the oil.

Key Nutrients / Compounds

Terpinen-4-ol rich in 30-40% of essential oil composition
Terpinen-4-ol rich in 30-40% of essential oil composition

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