Large-flowered False Goldenaster
heterotheca grandiflora
Also known as: ["Large-flowered False Goldenaster","Large-flowered Heterotheca"]
Overview
A perennial herbaceous plant native to North America, known for its daisy-like flowers and adaptability to various habitats.
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 grandiflora |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: rock gardens, slopes, or sunny borders
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–35°C"}
- Hardiness: {"zones":"5–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, sandy loam with added organic matter; cactus or succulent mix is ideal.
Maintenance Level
- Maintenance Level: low
- Toughness Level: high
- Pruning Frequency: Light pruning can be done anytime; major shaping or rejuvenation pruning in early spring.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary for rejuvenation.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); tolerates partial shade but may produce fewer blooms.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun in hot climates; ensure good air circulation to prevent fungal issues.
Care Requirements
Care Difficulty
easyModerate
Sunlight
full sun to partial shade
Rotate plant weekly for even growth; provide shade during extreme heat; avoid placing near reflective surfaces that intensify light.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overwatering to prevent root rot.
Soil
well-draining, sandy or loamy soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Avoid heavy clay soils; ensure pots have drainage holes; topdress with compost annually.
Temperature
Thrives in 60–80°F (15–27°C); tolerates cooler temperatures down to 40°F (4°C) but may become dormant; prefers mild conditions with protection from frost.
Protect from frost; avoid sudden temperature fluctuations; maintain consistent warmth during active growth.
Fertilizing
every 2–3 months during spring and summer
Fertilize only during active growth; flush soil occasionally to prevent salt buildup; use a low-nitrogen formula for flowering plants.
Propagation
Methods
Stem cuttings; division of clumps; seeds (less common for home growers).
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Maintain humidity.
- Water lightly.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70–75°F or 21–24°C), high humidity (60–70%), and bright indirect light.
Medium
Well-draining mix of perlite, sand, and peat moss; can also root in water initially.
Hormone
Rooting hormone is recommended to improve success rates.
Timeline
Roots typically form in 3–6 weeks; establishment may take an additional 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining medium, plastic bags or propagation dome.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat if possible; avoid direct sunlight.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips to encourage branching; cut just above a leaf node or bud; remove crossing or crowded stems.
Pruning Plan
Remove dead or damaged growth; shape the plant to encourage bushier growth; promote airflow to reduce disease risk.
Tools
Pruning shears, sharp knife, gloves, disinfectant (e.g., rubbing alcohol).
Checklist
Disinfect tools; prune during dry conditions; remove dead/diseased parts first; avoid over-pruning.
Repotting Guide
Best Season
Early spring before active growth begins.
Pot Size
Increase pot size by 1–2 inches in diameter; ensure good drainage holes.
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh, well-draining soil; water lightly after repotting.
Suggestions
Repot every 2–3 years or when roots fill the pot; beneficial for rejuvenation and fresh soil.
Checklist
Check root bound status; prepare new pot with drainage; use fresh soil mix; water sparingly post-repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust frequency seasonally.
How to Apply Water Properly
Water at the base of the plant, targeting the root zone; apply until water drains from the bottom; ensure excess water exits the pot to prevent waterlogging; water early in the morning to minimize evaporation.
Watering Schedule Tips
Water deeply once every 7–10 days during active growth in spring and summer; reduce frequency to every 2–3 weeks in fall and winter. Adjust based on rainfall and soil moisture retention.
Soil Improvement
Add perlite or coarse sand to improve drainage; incorporate compost for fertility; ensure soil is loose and airy.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or wilting in excessive heat; stunted growth or leaf drop in prolonged cold; bud drop or failure to flower in temperature stress.
Cold Stress
Slows growth; may cause leaf discoloration; prolonged exposure can lead to root damage or death.
Solution: Move to a sheltered location; provide frost protection; reduce watering in cold periods; use mulch to insulate roots.
Hot Stress
Wilting; leaf scorch; reduced flowering; increased susceptibility to pests and diseases.
Solution: Provide partial shade during peak heat; increase humidity; water deeply but avoid waterlogging; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Check growth phase before fertilizing; dilute fertilizer correctly; apply to moist soil; avoid contact with foliage.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength; apply every 4–6 weeks during spring and summer; avoid fertilizing in fall and winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicHeterotheca grandiflora is not considered toxic to cats. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicHeterotheca grandiflora is not considered toxic to dogs. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicHeterotheca grandiflora is not considered toxic to humans. It has no known adverse physiological effects when ingested.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Heterotheca grandiflora 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 to partial shade |
| Water: | every 7–10 days during activ |
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