Wild Olive
grewia caffra
Also known as: ["African Olive","Wild Olive Tree"]
Overview
A small to medium-sized deciduous tree native to southern Africa, known for its hardy nature and small, fragrant flowers.
Benefits & Perks
["wildlife attractant (bees, butterflies, birds)","drought tolerant","aesthetic foliage"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Malvales |
| Family: | Malvaceae |
| Genus: | Grewia |
| Botanical Name: | Grewia caffra |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: outdoor garden in a sunny spot, adaptable to container growth
- 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 waterlogging.
- Soil Type: Well-draining, loamy soil with added organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Annually in late winter or early spring before new growth begins.
- Pruning Intensity: Moderate; remove up to one-third of old growth to rejuvenate.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade (4–6 hours of direct sunlight daily); tolerates some shade in hot climates.
Sunlight Tolerance Tips:
Acclimate gradually to intense sunlight; protect from harsh afternoon sun; adjust placement based on seasonal light changes.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun to partial shade
Rotate plant for even growth; use sheer curtains in intense sun; monitor for sunburn.
Watering
every 7–10 days during growing season, reduce in winter
Water thoroughly but infrequently; ensure good drainage; adjust based on season and weather.
Soil
well-drained, loamy soil with moderate organic content
pH: Slightly acidic to neutral (pH 6.0–7.0).
Avoid heavy clay soils; ensure pots have drainage holes; topdress with compost annually.
Temperature
Prefers warm temperatures (65–85°F / 18–29°C); can tolerate mild frosts but thrives in warmth.
Avoid sudden temperature shifts; protect from drafts; maintain consistent warmth during active growth.
Fertilizing
every 4–6 weeks during active growth
Fertilize less in winter; flush soil occasionally to prevent salt buildup; use organic options for slow release.
Propagation
Methods
Stem cuttings or seed; stem cuttings are more reliable for home growers.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in 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 / 21–24°C), high humidity (70–80%), and bright 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 may 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 if possible.
Pruning & Repotting
Pruning Guide
Method
Selective thinning and heading back to maintain form and encourage branching.
Pruning Plan
Shape the plant, encourage bushier growth, and remove dead or overgrown branches.
Tools
Pruning shears, loppers (for larger branches), sterilizing solution.
Checklist
Sterilize tools; prune dead/damaged wood; shape as desired; clean up debris.
Repotting Guide
Best Season
Early spring before active growth starts.
Pot Size
Increase pot size by 2–3 inches in diameter; ensure good drainage holes.
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; beneficial for growth and health.
Checklist
Check root bound status; prepare new pot; 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; avoid wetting foliage; allow excess water to drain away.
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 sand for drainage; incorporate compost for fertility; ensure aeration with organic matter.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf drop, or browning edges in extreme heat; stunted growth or leaf discoloration in cold.
Cold Stress
Slows growth; may cause leaf drop; vulnerable to frost damage in prolonged cold.
Solution: Protect from frost; move indoors in cold climates; provide a warm, sheltered location.
Hot Stress
Leaf scorch, wilting, or reduced flowering in excessive heat; may drop leaves to conserve water.
Solution: Provide shade during peak heat; increase watering; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Check season; dilute fertilizer; apply to moist soil; avoid contact with roots.
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
Slightly ToxicCats may suffer mild gastrointestinal issues upon ingestion of Grewia caffra berries. The toxic effects are generally limited to the digestive system.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Slightly ToxicDogs may experience mild gastrointestinal upset if they consume the berries of Grewia caffra. The toxic compounds primarily affect the digestive tract.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Slightly ToxicThe berries of Grewia caffra contain compounds that can cause mild gastrointestinal distress when ingested in significant quantities. The physiological impact is generally limited to the digestive system.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Grewia caffra suitable for drought-prone areas?
A: Yes, it is highly drought-tolerant and thrives in arid conditions.
Q: Does Grewia caffra attract wildlife?
A: Yes, it is known to attract bees, butterflies, and birds.
Q: How tall does Grewia caffra grow?
A: It typically grows to a height of 5–10 meters.
Quick Reference
| Family: | Malvaceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during growi |
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