Wrinkle-leaf Goldenaster
heterotheca subaxillaris
Also known as: ["False Goldenaster","Wrinkleleaf False Goldenaster"]
Overview
A perennial wildflower native to North America, known for its bright yellow daisy-like flowers and drought tolerance.
Benefits & Perks
["long-flowering","drought tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Heterotheca |
| Botanical Name: | Heterotheca subaxillaris |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: rock gardens, xeriscapes, or sunny borders
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"0–40°C"}
- Hardiness: {"zones":"5–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, sandy loam with some organic matter.
Maintenance Level
- Maintenance Level: low
- Toughness Level: high
- Pruning Frequency: Annually in late winter or early spring; light pruning can be done after flowering.
- Pruning Intensity: Moderate; remove up to one-third of old growth if needed.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours/day); tolerates partial shade in hot climates.
Sunlight Tolerance Tips:
Acclimate gradually to intense sunlight; protect from harsh afternoon sun in arid regions; ensure good air circulation if grown indoors.
Care Requirements
Care Difficulty
easyeasy
Sunlight
full sun
Rotate plant for even light exposure; use sheer curtains to filter intense sun; avoid sudden light changes.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overhead watering.
Soil
well-draining, sandy or loamy soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Use a cactus mix as a base; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Thrives in 60–85°F (15–29°C); prefers warm, dry conditions; tolerates mild frosts.
Protect from frost; avoid sudden temperature swings; ensure good air circulation.
Fertilizing
every 2–3 months during spring and summer, none in winter
Fertilize lightly; avoid over-fertilization; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or division; stem cuttings are more common for home growers.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in moist medium.
- Keep humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70–75°F), high humidity, and bright indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus soil.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots develop in 2–4 weeks; new growth appears in 6–8 weeks.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain humidity with a plastic bag; avoid direct sun during rooting.
Pruning & Repotting
Pruning Guide
Method
Cut stems just above a leaf node or lateral branch; shear back for shape if desired.
Pruning Plan
Remove dead or overgrown stems to encourage bushier growth and flowering.
Tools
Pruning shears, gloves, disinfectant for tools.
Checklist
Disinfect tools; prune dead/damaged stems; shape as needed; clean up debris.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size up (e.g., from 4-inch to 6-inch pot); ensure good drainage.
Method
Remove plant gently; trim roots if crowded; place in a slightly larger pot with fresh soil; water lightly.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for younger plants to encourage growth.
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; avoid wetting leaves.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water in the morning to reduce evaporation.
Watering Schedule Tips
Water deeply once the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf drop, or browning edges in extreme heat; stunted growth or mold in cold, damp conditions.
Cold Stress
Slows growth; may suffer leaf damage or dieback in prolonged freezing temperatures.
Solution: Provide frost protection; move indoors in freezing weather; ensure good air circulation to prevent mold.
Hot Stress
Leaves may scorch or wilt; growth may slow in excessive heat.
Solution: Provide afternoon shade; increase watering frequency; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Use diluted fertilizer; apply during active growth; avoid winter feeding.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength; apply monthly during growing season (spring–summer); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicHeterotheca subaxillaris is not considered toxic to cats. It does not produce any known compounds that are harmful when ingested by felines.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicHeterotheca subaxillaris is not considered toxic to dogs. It does not produce any known compounds that are harmful when ingested by canines.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicHeterotheca subaxillaris is not considered toxic to humans. It does not produce any known compounds that are harmful when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Heterotheca subaxillaris toxic to pets?
A: No, it is non-toxic to dogs and cats.
Q: How often should I water this plant?
A: Water sparingly, as it is drought-tolerant and prefers well-drained soil.
Q: Does this plant attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its nectar-rich flowers.
Quick Reference
| Family: | Asteraceae |
| Care: | easy |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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