Tree Tobacco
nicotiana glauca
Also known as: ["Tree Tobacco","Australian Tree Tobacco","South American Tree Tobacco"]
Overview
A small tree or shrub with yellow, tubular flowers and silvery-green leaves, native to South America but naturalized in many regions.
Benefits & Perks
["drought tolerant","wildlife attractant (bees, butterflies, birds)","rare/collector’s item"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Solanales |
| Family: | Solanaceae |
| Genus: | Nicotiana |
| Botanical Name: | Nicotiana glauca |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: outdoor garden bed in a warm, sunny area
- Suitable For:
- Is Weed: No
- Allergenicity: moderate
Environmental Needs
- Climate: {"temperatureRange":"10–35°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, sandy loam with organic matter; cactus or succulent mix is ideal.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Every 2–3 months during growing season; lightly prune as needed.
- Pruning Intensity: Moderate; remove up to one-third of growth if plant becomes overgrown.
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 plants gradually to intense sunlight; protect from harsh afternoon sun in hot climates; ensure adequate airflow to prevent fungal growth.
Care Requirements
Care Difficulty
moderateModerate
Sunlight
full sun to partial shade
Rotate plant for even light exposure; use shade cloth in extreme heat; avoid sudden light changes.
Watering
every 7–10 days, allowing soil to dry between waterings
Water thoroughly until it drains from the bottom; allow soil to dry between waterings; avoid overhead watering to prevent fungal issues.
Soil
well-draining, sandy loam with moderate organic content
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use raised beds for better drainage; avoid heavy clay soils; top-dress with compost annually.
Temperature
Thrives in warm conditions (65–85°F or 18–29°C); prefers stable temperatures; sensitive to frost.
Protect from frost; avoid placing near drafty windows; maintain consistent warmth for optimal growth.
Fertilizing
every 4–6 weeks during active growth
Dilute fertilizer to half strength; apply to moist soil to prevent root burn; avoid fertilizing newly transplanted plants.
Propagation
Methods
Stem cuttings; seeds.
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 temperatures are warm and stable.
Environment
Warm (70–75°F or 21–24°C), high humidity (70–80%), 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 2–4 weeks; establish in new pot within 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; keep soil consistently moist; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips for bushiness; cut stems just above a leaf node or lateral branch.
Pruning Plan
Remove dead or leggy growth to encourage bushier form; prune after flowering to promote new blooms.
Tools
Pruning shears, sharp knife, disinfectant.
Checklist
Disinfect tools; prune during dry weather; remove dead or diseased parts; shape as desired.
Repotting Guide
Best Season
Spring, before new growth begins.
Pot Size
Increase pot size by 2–3 inches in diameter.
Method
Remove plant gently; trim roots if necessary; place in new pot with fresh soil; water lightly.
Suggestions
Repot every 2 years or when roots fill the pot; beneficial for growth and health.
Checklist
Choose appropriate pot; prepare new soil mix; handle roots carefully; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; avoid wetting foliage.
How to Apply Water Properly
Water directly at the root zone, ensuring even saturation; water early in the day to allow foliage to dry; ensure excess water drains to prevent waterlogging.
Watering Schedule Tips
Water deeply when the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure aeration with organic matter.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or necrosis in leaves; stunted growth; bud drop; wilting despite adequate water.
Cold Stress
Growth slows or halts; leaves may turn yellow or brown; risk of frost damage or death in temperatures below 50°F (10°C).
Solution: Move to a warmer location; use a heat mat for seedlings; cover plants during cold snaps; avoid overwatering in cold conditions.
Hot Stress
Wilting; leaf scorch; reduced flowering; increased water demand.
Solution: Provide shade during peak heat; increase watering frequency; use mulch to retain soil moisture; ensure good airflow.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; dilute correctly; apply during active growth; avoid contact with foliage.
Fertilizing Method
Use a balanced liquid fertilizer (10-10-10) every 4–6 weeks during growing season; reduce or stop in winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicNicotiana glauca is toxic to cats due to its alkaloid content, which can cause severe neurological and gastrointestinal symptoms. Cats are particularly sensitive to such compounds, making ingestion hazardous.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicThe toxic alkaloids in Nicotiana glauca are harmful to dogs, causing significant neurological and gastrointestinal distress. Anabasine and related compounds can lead to severe poisoning if ingested.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
ToxicNicotiana glauca contains toxic alkaloids, primarily anabasine, which can cause severe physiological effects upon ingestion. These compounds interfere with the nervous system, leading to symptoms ranging from mild discomfort to life-threatening conditions.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Nicotiana glauca safe for pets?
A: No, it is toxic to dogs and cats.
Q: Does Tree Tobacco require much water?
A: It is drought tolerant and prefers dry conditions.
Q: Can Nicotiana glauca be grown indoors?
A: It is typically grown outdoors due to its size and growth habits.
Quick Reference
| Family: | Solanaceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 7–10 days, allowing so |
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