Slender-stemmed Dahlia
dahlia tenuicaulis
Also known as: ["Slender-stemmed Dahlia"]
Overview
A species of dahlia with slender stems and typically producing showy flowers, native to Mexico.
Benefits & Perks
["long-flowering","aesthetic foliage","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Dahlia |
| Botanical Name: | Dahlia tenuicaulis |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: garden bed in full sun, protected from strong winds
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"10–30°C"}
- Hardiness: {"zones":"8–10"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent tuber rot.
- Soil Type: Rich, loamy soil with good drainage and organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Deadhead weekly during blooming; prune stems in late fall after frost.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary for shape or health.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours/day) with some afternoon shade in hot climates; adjust for seasonal light intensity.
Sunlight Tolerance Tips:
Acclimate new plants to full sun gradually; protect from harsh midday sun; provide dappled shade in extreme heat.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate pot for even growth; avoid direct afternoon sun in summer; use sheer curtains for filtered light indoors.
Watering
every 3–5 days during active growth, reduce in winter
Water at the base to avoid foliage wetting; ensure soil dries slightly between waterings; adjust based on weather and growth stage.
Soil
well-drained, fertile, loamy soil
pH: 6.0–7.0 (slightly acidic to neutral).
Ensure pots have drainage holes; avoid heavy clay soils; test pH annually.
Temperature
60–75°F (15–24°C) during active growth; tolerate cooler nights but avoid prolonged frost.
Protect from frost; avoid placing near drafty windows; maintain consistent temperatures for blooming.
Fertilizing
every 2 weeks during growing season with balanced liquid fertilizer, none in winter
Dilute fertilizer to half strength; fertilize after watering to prevent root burn; avoid nitrogen-heavy formulas for tubers.
Propagation
Methods
Stem cuttings or division of tubers.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in hormone.
- Plant in medium.
- Maintain humidity.
Best Time: Spring, when new growth begins.
Environment
High humidity (70–80%), warm temperatures (65–75°F), and indirect light.
Medium
Well-draining mix of peat, perlite, and sand.
Hormone
Rooting hormone recommended for faster rooting.
Timeline
Roots in 3–4 weeks; establish in 2–3 months.
Tools Needed
Pruners, rooting hormone, small pots, humidity dome.
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.
Pruning Plan
Remove spent flowers to encourage reblooming; trim leggy stems for bushier growth.
Tools
Sharp pruners, gloves, disinfectant.
Checklist
Clean tools; deadhead regularly; prune after flowering; remove damaged growth.
Repotting Guide
Best Season
Early spring before active growth starts.
Pot Size
One size larger pot (2–3 inches wider); ensure drainage holes.
Method
Use fresh, well-draining soil; gently tease out circling roots; ensure tuber is covered but crown is exposed.
Suggestions
Repot every 2–3 years or when roots fill the pot; necessary for larger tubers.
Checklist
Choose appropriate pot; prepare fresh soil; handle tuber carefully; water lightly after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture with finger; water deeply; ensure drainage; adjust frequency seasonally.
How to Apply Water Properly
Water thoroughly until it drains from the bottom, ensuring root zone saturation; water early in the morning to minimize evaporation and fungal risk; allow excess water to drain completely.
Watering Schedule Tips
Water deeply once a week during active growth; increase to twice weekly in hot, dry periods; reduce frequency in winter dormancy.
Soil Improvement
Add compost or aged manure for fertility; mix perlite or sand for drainage; topdress with mulch.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf scorch, stunted growth, or bud drop in extreme heat; yellowing or blackened foliage in cold stress.
Cold Stress
Slows growth, weakens stems, and may cause root rot if soil remains cold and wet.
Solution: Move to a warmer location; insulate roots with mulch; avoid overwatering in cool conditions.
Hot Stress
Leaf scorch, wilting, reduced flowering, and potential dehydration in excessive heat.
Solution: Provide shade during peak heat; increase watering frequency; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; dilute properly; apply during active growth; cease in dormancy.
Fertilizing Method
Balanced liquid fertilizer (10-10-10) every 2–4 weeks during growing season; reduce or stop in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicDahlia tenuicaulis is not considered toxic to cats. The plant does not pose a significant risk of poisoning to felines.
⚡ Toxic If:
Generally non-toxic to cats
Dogs
Non-toxicDahlia tenuicaulis is not considered toxic to dogs. There are no documented cases of toxicity in canines from exposure to this plant.
⚡ Toxic If:
Generally non-toxic to dogs
Humans
Non-toxicDahlia tenuicaulis is not considered toxic to humans under normal circumstances. The plant does not produce known toxic compounds that would cause adverse effects upon ingestion or contact.
⚡ Toxic If:
Generally non-toxic to humans
Frequently Asked Questions
Q: Is Dahlia tenuicaulis toxic to pets?
A: Yes, it is mildly toxic to dogs and cats if ingested.
Q: How often should I water Dahlia tenuicaulis?
A: Water moderately, keeping the soil evenly moist but not waterlogged, especially during blooming periods.
Q: Does Dahlia tenuicaulis attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its nectar-rich flowers.
Quick Reference
| Family: | Asteraceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 3–5 days during active |
Get Expert Care Tips
Download the Plantious app for personalized care reminders and plant identification!
Google Play App Store
