Large-flowered Tickseed
coreopsis grandiflora
Also known as: ["Large-flowered Tickseed","Golden Tickseed"]
Overview
A perennial flowering plant native to North America, known for its bright yellow daisy-like flowers and slender, linear leaves.
Benefits & Perks
["long-flowering","disease resistant","deer resistant","wildlife attractant (bees, butterflies, birds)","drought tolerant","aesthetic foliage"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Coreopsis |
| Botanical Name: | Coreopsis grandiflora |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: garden bed or container in full sun
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–35°C"}
- Hardiness: {"zones":"4–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, loamy soil with organic matter; tolerates poor soils but performs best with some enrichment.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Deadhead regularly during blooming season; prune lightly in early spring.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless rejuvenating an older plant.
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 if moving from shade to sun; protect from intense midday heat in hot climates; ensure good air circulation to prevent fungal issues.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun
Rotate pots for even growth; use sheer curtains to filter intense light indoors; monitor for sunburn signs.
Watering
every 7–10 days during active growth, less frequently in winter
Water at the base to avoid foliage wetting; ensure soil dries slightly between waterings; avoid overwatering to prevent root rot.
Soil
well-draining, loamy soil with moderate organic matter
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure good drainage; amend with organic matter; avoid waterlogged conditions.
Temperature
Prefers 60–75°F (15–24°C); tolerates heat but may require more water in high temperatures.
Protect from frost; water early to avoid heat stress; adjust care based on seasonal changes.
Fertilizing
every 4–6 weeks during spring and summer
Fertilize lightly; avoid over-fertilizing to prevent leggy growth; water before applying fertilizer.
Propagation
Methods
Stem cuttings or division; seeds can also be used but may not produce identical plants.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist.
Best Time: Early spring or late summer when the plant is not in full bloom.
Environment
Warm, humid conditions with indirect light; maintain consistent moisture.
Medium
Well-draining potting mix with perlite or sand; can also root in water.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots in 2–4 weeks; establish in new pot within 1–2 months.
Tools Needed
Pruners, rooting hormone, pots, well-draining soil mix.
Quick Tips
Use healthy, non-flowering stems; keep cuttings out of direct sun; maintain humidity with a plastic bag.
Pruning & Repotting
Pruning Guide
Method
Snip spent flowers just above a leaf node; trim stems to encourage bushier growth.
Pruning Plan
Remove spent flowers to encourage reblooming; trim leggy growth to maintain shape.
Tools
Pruning shears, gloves, clean blades.
Checklist
Use clean tools; deadhead regularly; trim after flowering if needed.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter).
Method
Remove plant gently; trim roots if crowded; place in a slightly larger pot with fresh soil; water thoroughly.
Suggestions
Repot every 2–3 years or when roots fill the container; beneficial for container-grown plants.
Checklist
Choose appropriate pot size; use fresh soil mix; water after repotting; acclimate slowly to new container.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; allow drainage; avoid wetting leaves.
How to Apply Water Properly
Water thoroughly until it drains from the bottom, ensuring the root zone is moistened. Water early in the morning to minimize evaporation and fungal issues.
Watering Schedule Tips
Water deeply once a week during active growth, reducing frequency in winter. Adjust based on rainfall and soil moisture retention.
Soil Improvement
Add compost or well-rotted manure; incorporate perlite or sand for drainage; avoid heavy clay soils.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, stunted growth, or bud drop in extreme heat or cold.
Cold Stress
Slows growth, may cause leaf discoloration, and can lead to frost damage in freezing temperatures.
Solution: Mulch heavily in winter; move potted plants indoors or to a sheltered location; avoid planting in frost-prone areas.
Hot Stress
Leaves may scorch, flowers fade quickly, and the plant may wilt despite adequate water.
Solution: Provide afternoon shade; increase watering frequency; use reflective mulch to reduce soil temperature.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; apply in spring; avoid late-season feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring; avoid high-nitrogen formulas; reduce or stop fertilizing in late summer/autumn.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicCoreopsis grandiflora is not considered toxic to cats. It is generally safe for cats to ingest small amounts without adverse effects.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicCoreopsis grandiflora is not considered toxic to dogs. It is generally safe for dogs to ingest small amounts without adverse effects.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicCoreopsis grandiflora is not considered toxic to humans. It is generally safe for consumption in small quantities, though it is not typically used as a food source.
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: How often should Coreopsis grandiflora be watered?
A: Water deeply once a week, allowing the soil to dry slightly between waterings.
Q: Does Coreopsis grandiflora attract pollinators?
A: Yes, it is highly attractive to bees, butterflies, and other pollinators.
Q: Can Coreopsis grandiflora be grown in containers?
A: Yes, it thrives in containers as long as it has well-draining soil and adequate sunlight.
Quick Reference
| Family: | Asteraceae |
| Care: | easy |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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