Pitch Apple, Autograph Tree
clusia grandiflora
Also known as: ["Pitch Apple","Autograph Tree"]
Overview
A tropical evergreen tree or shrub known for its large, glossy leaves and unique ability to be used as a writing surface due to the leaf's waxy texture.
Benefits & Perks
["long-flowering","disease resistant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Malpighiales |
| Family: | Clusiaceae |
| Genus: | Clusia |
| Botanical Name: | Clusia grandiflora |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: indoor pot or sheltered outdoor location with protection from intense sun
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"15–30°C"}
- Hardiness: {"zones":"10–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining potting mix with added organic matter; cactus or orchid mix can work well.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Annually in late winter or early spring; light pruning can be done as needed year-round.
- Pruning Intensity: Moderate; remove up to one-third of old growth if necessary.
Care Details
Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; tolerates some direct morning sun but avoid harsh afternoon sun.
Sunlight Tolerance Tips:
Acclimate gradually to direct light; protect from intense sun to prevent leaf scorch; adjust placement based on indoor/outdoor conditions.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
partial shade to full shade
Rotate plant for even growth; use sheer curtains to filter intense light; avoid direct afternoon sun.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but infrequently; ensure proper drainage; adjust based on season and humidity.
Soil
well-draining, rich in organic matter
pH: Slightly acidic to neutral (pH 5.5–7.0).
Ensure pots have drainage holes; avoid compacted soil; topdress with organic matter annually.
Temperature
Prefers 65–85°F (18–29°C); tolerates brief dips to 50°F (10°C) but thrives in warm, stable conditions.
Avoid drafts; maintain stable temperatures; protect from sudden temperature swings.
Fertilizing
every 4–6 weeks during growing season, none in winter
Flush soil occasionally to prevent salt buildup; reduce frequency in dormant periods; apply after watering to avoid root burn.
Propagation
Methods
Stem cuttings with leaf nodes; air layering for larger plants.
Step-by-Step Propagation Guide
- Select healthy stem.
- Cut below node.
- Apply hormone.
- Plant in medium.
- Maintain moisture and humidity.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity (70–90%), warm temperatures (75–85°F), and indirect light.
Medium
Well-draining mix of peat, perlite, and sand; or sphagnum moss for air layering.
Hormone
Rooting hormone powder or gel recommended for faster rooting.
Timeline
Roots may develop in 4–8 weeks; new growth in 2–3 months.
Tools Needed
Pruning shears, rooting hormone, plastic bag or propagator, misting bottle.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Selective thinning of branches; heading back to encourage denser growth.
Pruning Plan
Remove dead or overgrown branches to maintain shape and encourage airflow; promote bushier growth.
Tools
Clean, sharp pruning shears, sterilizing solution.
Checklist
Sterilize tools; prune dead/damaged growth; shape plant; clean up debris.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
Increase pot size by 2–3 inches in diameter; ensure good drainage.
Method
Remove plant gently; trim roots if needed; 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; trim roots; use fresh soil; 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 at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water in the morning to reduce evaporation.
Watering Schedule Tips
Water deeply once the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; use pine bark for aeration.
Temperature Stress Management
Signs of Temperature Issues
Yellowing leaves, leaf drop, or stunted growth in cold; wilting or leaf burn in excessive heat.
Cold Stress
Slows growth, may cause leaf drop, and increases susceptibility to root rot due to reduced metabolic activity.
Solution: Move to a warmer location; insulate roots with mulch; avoid overwatering in cold conditions.
Hot Stress
Leaves may wilt, curl, or scorch; increased water loss can lead to dehydration.
Solution: Provide shade during peak heat; increase humidity; water more frequently but avoid waterlogging.
Fertilizing Guide
Fertilizing Checklist
Check season; dilute fertilizer; apply to moist soil; rinse pot periodically.
Fertilizing Method
Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring to early fall); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicClusia grandiflora is not known to be toxic to cats. The plant does not pose a significant risk if ingested or handled by felines.
⚡ Toxic If:
Not applicable
Dogs
Non-toxicClusia grandiflora is not known to be toxic to dogs. The plant does not pose a significant risk if ingested or handled by canines.
⚡ Toxic If:
Not applicable
Humans
Non-toxicClusia grandiflora is not known to exhibit toxic properties to humans. The plant is generally considered safe for handling and consumption.
⚡ Toxic If:
Not applicable
Frequently Asked Questions
Q: Is Clusia grandiflora toxic to pets?
A: There is no reliable information available regarding its toxicity to pets.
Q: How do I care for Clusia grandiflora?
A: It requires moderate care, including well-drained soil, partial shade, and regular watering.
Q: Why are the leaves of my Clusia grandiflora turning yellow?
A: Yellow leaves may indicate overwatering, poor drainage, or nutrient deficiencies.
Quick Reference
| Family: | Clusiaceae |
| Care: | moderate |
| Light: | partial shade to full shade |
| Water: | every 7–10 days during activ |
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