Cider Gum
eucalyptus gunnii
Also known as: ["Cider Gum Eucalyptus","Gunnii Gum"]
Overview
A fast-growing evergreen tree native to Tasmania, valued for its aromatic foliage and decorative silver-blue leaves.
Benefits & Perks
["fast growing","fragrant flowers","wildlife attractant (bees, butterflies, birds)","drought tolerant","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Myrtales |
| Family: | Myrtaceae |
| Genus: | Eucalyptus |
| Botanical Name: | Eucalyptus gunnii |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: outdoor garden in temperate climates, or large container in cooler regions
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"–12–35°C"}
- Hardiness: {"zones":"8–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, slightly acidic soil mix with sand or perlite for aeration.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Annually in late winter or early spring; light pruning can be done as needed.
- Pruning Intensity: Moderate; can handle hard pruning but avoid removing more than one-third of the plant at once.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); tolerates partial shade but may become leggy.
Sunlight Tolerance Tips:
Acclimate gradually if moving from shade to sun; protect from intense midday sun in summer; ensure good air circulation to prevent fungal issues.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant for even growth; use sheer curtains to filter harsh sunlight; place near south-facing window indoors.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly but infrequently; ensure excellent drainage; avoid overwatering, especially in winter.
Soil
well-draining, slightly acidic to neutral soil
pH: 5.5–6.5 (slightly acidic).
Use a cactus or succulent mix as base; ensure pots have drainage holes; avoid heavy clay soils.
Temperature
Prefers 60–75°F (15–24°C); can tolerate brief dips to 20°F (-6°C) but thrives in mild temperatures.
Avoid sudden temperature changes; protect from frost; ensure good air circulation.
Fertilizing
every 4–6 weeks during spring and summer
Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; use slow-release fertilizer for convenience.
Propagation
Methods
Stem cuttings taken from semi-hardwood growth.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Maintain humidity.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity (70–80%), warm temperatures (65–75°F), and bright indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Rooting hormone is recommended for faster and more reliable rooting.
Timeline
Roots typically form in 4–8 weeks; establish in new pot after 3–6 months.
Tools Needed
Pruning shears, rooting hormone, small pots, plastic bags or propagator.
Quick Tips
Use clean tools to prevent disease; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Use clean cuts just above a leaf node or bud; remove crossing or crowded branches.
Pruning Plan
Prune to maintain shape, encourage bushiness, and remove dead/diseased growth.
Tools
Pruning shears, loppers (for larger branches), sterilizing solution.
Checklist
Sterilize tools; prune during dormancy; remove dead/diseased wood; shape evenly.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
Increase pot size by 2–3 inches in diameter; ensure good drainage holes.
Method
Remove plant gently; trim roots if necessary; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for young plants to encourage growth.
Checklist
Check root bound status; prepare new pot; use fresh soil mix; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone until water drains from the bottom; ensure even moisture without waterlogging; water in the morning to allow foliage to dry.
Watering Schedule Tips
Water deeply once the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand to improve drainage; incorporate organic matter like compost for fertility.
Temperature Stress Management
Signs of Temperature Issues
Leaf drop, yellowing, or browning; stunted growth; wilting despite adequate water.
Cold Stress
Leaves may curl, turn brown, or drop; growth slows or halts; increased susceptibility to pests.
Solution: Move to a warmer location; protect with frost cloth in winter; avoid cold drafts.
Hot Stress
Wilting, leaf scorch, or yellowing; reduced vigor; increased water demand.
Solution: Provide shade during peak heat; increase watering frequency; mist foliage in extreme heat.
Fertilizing Guide
Fertilizing Checklist
Check growth phase; dilute fertilizer; apply to moist soil; avoid contact with leaves.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicCats are highly sensitive to Eucalyptus gunnii due to their limited ability to metabolize certain compounds. Ingestion can cause severe gastrointestinal and neurological effects.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicIngestion of Eucalyptus gunnii by dogs can lead to gastrointestinal upset and neurological symptoms due to the presence of cineole and other toxic compounds.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
ToxicEucalyptus gunnii contains toxic compounds, primarily cineole, which can cause significant physiological effects when ingested. The essential oil is particularly potent and can lead to severe toxicity.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Eucalyptus gunnii toxic to pets?
A: No, it is non-toxic to dogs and cats.
Q: How fast does Eucalyptus gunnii grow?
A: It is a fast-growing tree, often reaching significant height within a few years.
Q: Does Eucalyptus gunnii attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its fragrant flowers.
Quick Reference
| Family: | Myrtaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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