Singapore Plumeria
plumeria obtusa
Also known as: ["Singapore Frangipani","White Frangipani"]
Overview
A tropical flowering plant known for its fragrant, white flowers and glossy, leathery leaves.
Benefits & Perks
["fragrant flowers","aesthetic foliage","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Genus: | Plumeria |
| Botanical Name: | Plumeria obtusa |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: indoor pot near bright window or outdoor garden bed in warm climates
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"15–32°C"}
- Hardiness: {"zones":"10–12"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining mix (e.g., cactus/succulent soil with added perlite or sand).
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Annually in late winter or early spring before new growth begins.
- Pruning Intensity: Moderate; remove up to one-third of old growth if needed.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours/day) with direct morning light and filtered afternoon light; adjust for intense summer sun.
Sunlight Tolerance Tips:
Acclimate new plants to sunlight gradually; protect from harsh midday sun to prevent scorching; move indoors during winter in cold climates.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant weekly for even growth; use sheer curtains to filter intense light; provide shade during peak summer.
Watering
every 7–10 days during growing season, every 3–4 weeks in dormant season
Water thoroughly but infrequently; avoid waterlogged soil; adjust frequency based on season and growth stage.
Soil
well-draining, loamy soil with added organic matter
pH: Slightly acidic to neutral (6.0–7.0).
Use pots with drainage holes; avoid heavy garden soil; top-dress with compost annually.
Temperature
65–85°F (18–29°C) during active growth; tolerate brief dips to 50°F (10°C) but thrive in warmth.
Avoid sudden temperature changes; protect from frost; maintain consistent warmth during active growth.
Fertilizing
every 2 weeks during active growth with balanced liquid fertilizer, every 3 months in dormant season
Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; avoid over-fertilizing.
Propagation
Methods
Stem cuttings (leafless sections preferred).
Step-by-Step Propagation Guide
- Cut stem, let callus for 1–2 days, apply hormone, plant in medium, keep moist, provide warmth.
Best Time: Spring or early summer when temperatures are warm and stable.
Environment
Warm (75–85°F), high humidity (70–80%), indirect light.
Medium
Well-draining mix (e.g., perlite and peat moss) or cactus/succulent soil.
Hormone
Recommended for faster rooting (rooting powder or liquid).
Timeline
Roots in 4–8 weeks; establish in 3–6 months.
Tools Needed
Pruning shears, rooting hormone, pot, well-draining medium, plastic wrap (for humidity).
Quick Tips
Use mature stems; let cuttings callus to prevent rot; maintain humidity for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Cut stems just above a node or leaf junction; remove crossing or crowded branches.
Pruning Plan
Remove dead/damaged stems, shape plant, and encourage bushier growth; focus on structural improvement.
Tools
Clean, sharp pruning shears or loppers.
Checklist
Sterilize tools; prune during dormancy; make clean cuts; dispose of pruned material.
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, place in new pot with fresh soil, water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; essential for young plants to support growth.
Checklist
Check root bound status; use fresh soil mix; ensure drainage; water sparingly post-repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure proper drainage; adjust for season.
How to Apply Water Properly
Water at the base, ensuring moisture reaches the root zone; water until it drains from the bottom; avoid wetting foliage; water in the morning for optimal absorption.
Watering Schedule Tips
Water deeply once a week during active growth (spring/summer); reduce to every 2–3 weeks in fall/winter; allow soil to dry completely between waterings.
Soil Improvement
Add perlite, coarse sand, or pumice to improve drainage; incorporate organic matter for fertility.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis, leaf drop, stunted growth, or bud drop in cold; wilting, leaf scorch, or dormancy in excessive heat.
Cold Stress
Slows growth, causes leaf drop, and may lead to root rot if soil remains wet in cold conditions.
Solution: Move to a warmer location; reduce watering; protect from drafts; use a heat mat if necessary.
Hot Stress
Induces dormancy, wilting, or leaf scorch; may halt blooming if temperatures exceed 90°F (32°C).
Solution: Provide shade during peak heat; increase humidity; water early morning or late evening; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Check growth stage; use diluted fertilizer; apply to moist soil; avoid contact with roots.
Fertilizing Method
Use balanced liquid fertilizer (20-20-20) every 2–4 weeks during spring/summer; reduce or stop in fall/winter; dilute to half strength.
Common Problems & Solutions
Toxicity Warning
Cats
Slightly ToxicThe milky sap of Plumeria obtusa can cause mild gastrointestinal upset in cats if ingested. The plant is not considered highly toxic to cats, but ingestion should be avoided to prevent discomfort.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested
Dogs
Slightly ToxicThe milky sap of Plumeria obtusa can cause mild gastrointestinal upset in dogs if ingested. While not highly toxic, it can lead to discomfort and mild symptoms.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested
Humans
Slightly ToxicThe milky sap of Plumeria obtusa contains irritant compounds that can cause mild gastrointestinal distress if ingested. The plant is not considered highly toxic to humans, but ingestion should be avoided.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if ingested
Frequently Asked Questions
Q: Is Plumeria obtusa toxic to pets?
A: Yes, it is mildly toxic to dogs and cats if ingested.
Q: How often should I water Plumeria obtusa?
A: Water thoroughly when the soil is dry, typically once a week during growing season, less in winter.
Q: Does Plumeria obtusa require full sun?
A: Yes, it thrives in full sun but can tolerate partial shade.
Quick Reference
| Family: | Apocynaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during growi |
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