Yellow Alder
turnera ulmifolia
Also known as: ["Yellow Alder","Yellow Buttercup"]
Overview
A tropical shrub native to Central and South America, known for its bright yellow flowers and glossy green leaves.
Benefits & Perks
["long-flowering","drought tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Angiosperms |
| Class: | Eudicots |
| Order: | Malpighiales |
| Family: | Passifloraceae |
| Genus: | Turnera |
| Botanical Name: | Turnera ulmifolia |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: outdoor garden bed in warm climates, or large container in cooler regions
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"15–35°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, sandy loam with organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Light pruning every 2–3 months; heavy pruning annually in late winter/early spring.
- Pruning Intensity: Moderate to heavy, depending on desired shape and size.
Care Details
Ideal Sunlight Coverage:
Bright, direct sunlight for 6–8 hours daily; can tolerate partial shade but may become leggy.
Sunlight Tolerance Tips:
Acclimate new plants to direct sun gradually over 1–2 weeks; protect from intense midday sun in summer; indoors, place near a south-facing window.
Care Requirements
Care Difficulty
easyeasy
Sunlight
full sun to partial shade
Rotate plant weekly for even growth; use sheer curtains to filter harsh sunlight; avoid shaded spots.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly until it drains from the bottom; allow soil to dry between waterings; avoid overwatering.
Soil
well-draining, sandy loam with moderate organic content
pH: Slightly acidic to neutral (6.0–7.0).
Use a cactus or succulent mix as a base; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Thrives in 65–85°F (18–29°C); prefers warm, humid conditions; sensitive to frost.
Keep away from drafty windows; use a humidifier in dry environments; monitor for sudden temperature drops.
Fertilizing
every 4–6 weeks during growing season
Fertilize after watering to prevent root burn; avoid overfertilizing, which can cause salt buildup; flush soil occasionally to remove excess salts.
Propagation
Methods
Stem cuttings in spring/summer.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting 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), high humidity (70–80%), indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots in 2–4 weeks; establish in 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 but not waterlogged; provide bottom heat if possible.
Pruning & Repotting
Pruning Guide
Method
Cut back stems just above a leaf node or bud; remove crossing or crowded branches.
Pruning Plan
Encourage bushier growth and remove dead/damaged parts; shape the plant for aesthetic appeal.
Tools
Pruning shears, sharp knife, gloves.
Checklist
Sterilize tools; prune during dormancy or active growth; remove dead/diseased parts first.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter); ensure good drainage.
Method
Remove plant gently; trim roots if needed; place in a new pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; promotes fresh soil and root space.
Checklist
Choose appropriate pot size; prepare fresh soil mix; handle roots carefully; 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; water early in the morning to minimize evaporation; ensure excess water drains away 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 soil is loose and airy.
Temperature Stress Management
Signs of Temperature Issues
Yellowing leaves, leaf drop, or stunted growth in cold; wilting or scorching in excessive heat.
Cold Stress
Growth slows or halts; leaves may turn yellow or brown; risk of frost damage below 50°F (10°C).
Solution: Move to a warmer location; protect with a frost cloth in cold spells; avoid cold drafts.
Hot Stress
Leaves may wilt, scorch, or drop; soil dries out quickly; growth may slow.
Solution: Provide shade during peak heat; increase watering frequency; mist foliage to boost humidity.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; dilute correctly; apply during active growth; avoid winter feeding.
Fertilizing Method
Use a balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); reduce or stop in fall/winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicTurnera ulmifolia is not known to be toxic to cats. There are no reported adverse effects from ingestion or contact with this plant.
⚡ Toxic If:
None
Dogs
Non-toxicTurnera ulmifolia is not known to be toxic to dogs. There are no reported adverse effects from ingestion or contact with this plant.
⚡ Toxic If:
None
Humans
Non-toxicTurnera ulmifolia is not known to exhibit toxic effects in humans under normal conditions. The plant is generally considered safe for handling and consumption.
⚡ Toxic If:
None
Frequently Asked Questions
Q: How often should I water Turnera ulmifolia?
A: Water moderately, allowing the soil to dry slightly between waterings.
Q: Does Turnera ulmifolia attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its nectar-rich flowers.
Q: Is Turnera ulmifolia toxic to pets?
A: No, it is non-toxic to dogs and cats.
Quick Reference
| Family: | Passifloraceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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