Silver Dollar Gum, Argyle Apple
eucalyptus cinerea
Also known as: ["Silver Dollar Tree","Round-leaf Gum"]
Overview
A medium-sized evergreen tree native to Australia, known for its round, silvery-blue leaves and aromatic foliage.
Benefits & Perks
["fragrant flowers","wildlife attractant (bees, butterflies, birds)","drought tolerant","aesthetic foliage"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Myrtales |
| Family: | Myrtaceae |
| Genus: | Eucalyptus |
| Botanical Name: | Eucalyptus cinerea |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: outdoor garden in a sunny, open area with good air circulation
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–35°C"}
- Hardiness: {"zones":"8–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, slightly acidic soil with good organic matter.
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; remove up to one-third of growth if necessary.
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; provide shade during extreme heat; avoid direct sun on leaves in hot climates.
Watering
every 7–10 days during active growth, less frequently in winter
Allow soil to dry between waterings; avoid overwatering; water deeply to encourage root growth.
Soil
well-draining, sandy loam with some organic matter
pH: 5.5–6.5 (slightly acidic).
Use a cactus or succulent mix; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers 65–80°F (18–27°C); tolerates mild frosts but thrives in warm conditions.
Avoid sudden temperature changes; protect from drafts; maintain consistent warmth during active growth.
Fertilizing
every 2–3 months during spring and summer
Fertilize only during active growth; flush soil occasionally to prevent salt buildup; use a low-nitrogen formula.
Propagation
Methods
Stem cuttings taken from new growth.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity (70–80%), warm temperatures (70–75°F), indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Recommended to use rooting hormone for faster root development.
Timeline
Roots develop in 4–8 weeks; establish in new pot after 3–6 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Use clean cuts just above a leaf node or branch junction; avoid leaving stubs.
Pruning Plan
Shape the plant, encourage bushier growth, and remove dead or diseased branches.
Tools
Pruning shears, sterilizing solution, gloves.
Checklist
Sterilize tools; prune dead/diseased wood first; shape evenly; clean up debris.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
Choose a pot 1–2 inches larger in diameter than the current one.
Method
Remove plant gently; trim roots if crowded; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; necessary to refresh soil and provide space.
Checklist
Check root bound status; prepare new pot with drainage; 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 thoroughly at the base, ensuring moisture reaches the root zone; allow excess water to drain; water in the morning to reduce evaporation.
Watering Schedule Tips
Water deeply once the top 1–2 inches of soil are dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Yellowing leaves (cold stress), leaf drop (heat stress), stunted growth (extremes).
Cold Stress
Slows growth, causes leaf discoloration, and may lead to root damage in prolonged cold.
Solution: Move to a warmer location; protect roots with mulch; avoid overwatering in cold conditions.
Hot Stress
Wilting, leaf scorch, and reduced vigor due to excessive heat and dryness.
Solution: Provide shade during peak heat; increase humidity; water deeply and regularly.
Fertilizing Guide
Fertilizing Checklist
Check growth phase; dilute fertilizer; apply to moist soil; avoid contact with leaves.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during spring and summer; avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicEucalyptus cinerea is toxic to cats, with the essential oil being particularly harmful. The compounds can cause severe gastrointestinal and neurological symptoms in felines.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicEucalyptus cinerea is toxic to dogs, particularly due to the presence of eucalyptol and other terpenes. Ingestion can lead to significant gastrointestinal upset and neurological effects.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Slightly ToxicEucalyptus cinerea contains compounds that can cause mild to moderate toxicity when ingested. The essential oil is particularly potent and can lead to irritation of the gastrointestinal tract and respiratory system.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Eucalyptus cinerea toxic to pets?
A: No, it is non-toxic to dogs and cats.
Q: How often should I water Eucalyptus cinerea?
A: Water moderately, allowing the soil to dry slightly between waterings.
Q: Does Eucalyptus cinerea 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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