Coastal Boobialla
myoporum tetrandrum
Also known as: ["Coastal Myoporum","Coastal Sandpaper Tree"]
Overview
A hardy, evergreen shrub native to coastal regions of Australia, known for its small, glossy leaves and small, white, star-shaped flowers.
Benefits & Perks
["drought tolerant","deer resistant","wildlife attractant (bees, butterflies, birds)","low maintenance"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Lamiales |
| Family: | Scrophulariaceae |
| Genus: | Myoporum |
| Botanical Name: | Myoporum tetrandrum |
Plant Characteristics
Basic Information
- Category: Shrubs
- Suitable Location: coastal gardens, rockeries, or as a groundcover in sunny areas
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–35°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, sandy loam with organic matter.
Maintenance Level
- Maintenance Level: low
- Toughness Level: high
- Pruning Frequency: Annually in late winter or early spring before new growth begins.
- Pruning Intensity: Moderate to heavy, depending on desired shape and size.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily). Tolerates partial shade but may become leggy with insufficient light.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight to avoid scorching. For indoor placement, use a south-facing window with direct light.
Care Requirements
Care Difficulty
easyeasy
Sunlight
full sun to partial shade
Rotate plant weekly for even growth; use sheer curtains to filter harsh midday sun; avoid sudden light changes.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly until runoff, allow soil to dry between waterings, and avoid frequent shallow watering.
Soil
well-draining, sandy or loamy soil
pH: Slightly acidic to neutral (6.0–7.0).
Ensure pots have drainage holes; avoid heavy clay soils; topdress with compost annually.
Temperature
Thrives in 65–85°F (18–29°C). Tolerates brief dips to 25°F (-4°C) but prefers mild, frost-free conditions.
Avoid placing near drafty windows; use shade cloth in extreme heat; protect from frost in winter.
Fertilizing
every 2–3 months during spring and summer
Fertilize lightly to avoid excessive foliage growth; flush soil occasionally to prevent salt buildup; apply before rain or watering.
Propagation
Methods
Stem cuttings or seed. Stem cuttings are faster and more reliable.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70–75°F), high humidity (70–80%), and bright indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Rooting hormone is recommended for faster root development.
Timeline
Roots develop in 3–6 weeks; establish in new pot within 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain humidity with a plastic bag; avoid overwatering.
Pruning & Repotting
Pruning Guide
Method
Selective thinning, heading back, and shaping cuts to maintain form.
Pruning Plan
Shape the plant, encourage bushiness, and remove dead or diseased growth to maintain vigor.
Tools
Pruning shears, loppers, gloves, disinfectant.
Checklist
Disinfect tools; prune dead/damaged growth; shape evenly; avoid over-pruning.
Repotting Guide
Best Season
Early spring before active growth starts.
Pot Size
Increase pot size by 2–3 inches in diameter.
Method
Remove plant gently; trim roots if needed; use fresh, well-draining soil; ensure proper drainage.
Suggestions
Repot every 2–3 years or when roots fill the pot. Necessary to refresh soil and provide space.
Checklist
Choose new pot; prepare fresh soil; inspect roots; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust frequency seasonally.
How to Apply Water Properly
Water directly at the root zone, ensuring even saturation to a depth of 6–8 inches. Ensure excess water drains away to prevent root rot. Water early in the morning to minimize evaporation.
Watering Schedule Tips
Water deeply once every 7–10 days during active growth in spring and summer; reduce frequency to every 2–3 weeks in fall and winter. Adjust based on rainfall and soil dryness.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis, leaf drop, or stunted growth in cold; wilting, scorching, or flower bud drop in excessive heat.
Cold Stress
Low temperatures slow growth and may cause leaf damage or dieback, especially below 25°F (-4°C).
Solution: Protect with frost cloth or move to a sheltered location. Mulch heavily to insulate roots.
Hot Stress
Excessive heat can lead to dehydration, leaf scorch, and reduced flowering if not watered adequately.
Solution: Provide afternoon shade, increase watering frequency, and use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; apply in spring; dilute liquid feeds; avoid winter feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in spring. Dilute liquid fertilizer to half-strength monthly during growing season; avoid winter feeding.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicCats may experience mild gastrointestinal upset if they ingest parts of Myoporum tetrandrum. The berries pose a higher risk if consumed in quantity.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Slightly ToxicIngestion of Myoporum tetrandrum by dogs can lead to mild gastrointestinal upset. The berries are particularly problematic if consumed in large amounts.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Slightly ToxicMyoporum tetrandrum contains compounds that can cause mild gastrointestinal distress and skin irritation upon contact. The berries, in particular, may induce mild toxicity if ingested in significant quantities.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Myoporum tetrandrum suitable for coastal gardens?
A: Yes, it is highly tolerant of salt spray and coastal conditions, making it an excellent choice for coastal landscapes.
Q: Does this plant require frequent watering?
A: No, it is drought-tolerant once established and prefers well-drained soil.
Q: Does Myoporum tetrandrum attract wildlife?
A: Yes, it produces nectar-rich flowers that attract bees, butterflies, and birds.
Quick Reference
| Family: | Scrophulariaceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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