Thuja of the Atlas, Sandarac Gum Tree
tetraclinis articulata
Also known as: ["Barbary thuja","Mastic tree"]
Overview
A slow-growing, evergreen conifer native to the Mediterranean region, known for its aromatic wood and resin.
Benefits & Perks
["fragrant flowers","drought tolerant","shade tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Cupressaceae |
| Genus: | Tetraclinis |
| Botanical Name: | Tetraclinis articulata |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: rock garden or xeriscaped area
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–40°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, slightly sandy soil with some organic matter. A cactus or succulent mix amended with perlite or coarse sand works well.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Light pruning can be done annually or as needed to remove deadwood or shape the plant.
- Pruning Intensity: Light to moderate, depending on the plant's condition and desired shape.
Care Details
Ideal Sunlight Coverage:
Bright, indirect sunlight for 6–8 hours daily. Can tolerate direct morning sun but should be protected from harsh afternoon sun, especially in summer.
Sunlight Tolerance Tips:
Acclimate the plant gradually to direct sunlight to avoid scorching. Place in a location with filtered light or partial shade during peak sun hours. Indoors, position near an east or south-facing window with sheer curtains.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant weekly for even light exposure; use sheer curtains to filter intense sunlight; avoid placing directly under harsh afternoon sun.
Watering
every 7–10 days during growing season, less frequently in winter
Water thoroughly until it drains from the bottom; avoid frequent shallow watering; adjust frequency based on season and soil dryness.
Soil
well-drained, sandy loam
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure soil dries between waterings; use a mix with good aeration; avoid heavy, water-retentive soils.
Temperature
Prefers temperatures between 60–85°F (15–29°C). Tolerates mild frosts but thrives in warm, Mediterranean-like conditions. Avoid exposure to prolonged cold or heat extremes.
Protect from frost; provide shade in extreme heat; maintain consistent temperatures for optimal growth.
Fertilizing
every 2–3 months during active growth
Fertilize only during active growth; use a balanced formula; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or seeds. Stem cuttings are more reliable for home growers.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting with several nodes.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in propagation medium.
- Maintain humidity and warmth.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light and consistent temperatures around 70–75°F (21–24°C).
Medium
Well-draining mix of perlite, sand, and peat moss.
Hormone
Rooting hormone is recommended to improve success rates.
Timeline
Roots typically form in 4–8 weeks; new growth may appear after 2–3 months.
Tools Needed
Pruning shears, rooting hormone, propagation tray, humidity dome, well-draining medium.
Quick Tips
Use healthy, non-flowering stems; maintain high humidity; avoid direct sunlight during rooting.
Pruning & Repotting
Pruning Guide
Method
Use clean, sharp tools to make precise cuts just above a node or branch junction. Remove crossing or crowded branches to improve air circulation.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove dead or diseased branches. Light pruning can be done annually to shape the plant.
Tools
Pruning shears, loppers (for larger branches), sterilizing solution.
Checklist
Sterilize tools; prune during dormancy or active growth; remove dead/diseased wood; shape as desired.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
Choose a pot one size larger (1–2 inches wider in diameter) than the current one.
Method
Gently remove the plant from its pot, trim any circling roots, and repot in a container with fresh, well-draining soil. Ensure the new pot has drainage holes.
Suggestions
Repot every 2–3 years or when the plant becomes root-bound. Tetraclinis articulata prefers being slightly root-bound, so avoid frequent repotting.
Checklist
Use fresh soil; ensure good drainage; trim roots if necessary; water lightly after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure proper drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone, ensuring even moisture distribution. Water early in the morning to minimize evaporation and allow foliage to dry. Ensure excess water drains away to prevent root rot.
Watering Schedule Tips
Water deeply once every 7–10 days during active growth in spring and summer; reduce frequency to every 3–4 weeks in fall and winter. Allow soil to dry completely between waterings.
Soil Improvement
Add perlite, coarse sand, or gravel to improve drainage. Incorporate compost or well-rotted organic matter for fertility.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis (yellowing leaves), leaf drop, stunted growth, or browning leaf tips. In extreme cold, branches may become brittle and snap easily.
Cold Stress
Low temperatures slow metabolic processes, leading to reduced growth and potential tissue damage. Prolonged cold can cause dieback or death of tender parts.
Solution: Move the plant indoors or to a sheltered location during cold spells. Provide a protective layer of mulch around the base. Use frost cloth or a cold frame for outdoor plants.
Hot Stress
Excessive heat can cause leaf scorch, wilting, and dehydration. High temperatures may also stress the plant, reducing its vigor and susceptibility to pests.
Solution: Provide shade during peak heat, increase humidity with misting, and ensure consistent watering. Avoid placing the plant in direct, unfiltered sunlight during hot periods.
Fertilizing Guide
Fertilizing Checklist
Use diluted fertilizer; apply during growing season; avoid over-fertilization; flush soil periodically.
Fertilizing Method
Use a balanced, slow-release fertilizer diluted to half strength every 4–6 weeks during spring and summer. Avoid fertilizing in fall and winter when growth slows.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicTetraclinis articulata is not considered toxic to cats. There are no documented cases of toxicity in felines from exposure to this plant.
⚡ Toxic If:
Generally non-toxic
Dogs
Non-toxicTetraclinis articulata is not considered toxic to dogs. There are no documented cases of toxicity in canines from exposure to this plant.
⚡ Toxic If:
Generally non-toxic
Humans
Non-toxicTetraclinis articulata, commonly known as Thuja of the Atlas, is not considered toxic to humans under normal circumstances. The plant has been used traditionally for its wood and resin without reported adverse effects.
⚡ Toxic If:
Generally non-toxic
Frequently Asked Questions
Q: Is Tetraclinis articulata toxic to pets?
A: No, it is non-toxic to dogs and cats.
Q: What are the common uses of Tetraclinis articulata?
A: It is used for its aromatic wood, resin (sandarac), and ornamental purposes.
Q: How often should Tetraclinis articulata be watered?
A: It is drought-tolerant and requires infrequent watering, especially in well-drained soil.
Quick Reference
| Family: | Cupressaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during growi |
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