Woodland Sunflower
helianthus divaricatus
Also known as: ["Woodland Sunflower","Forking Sunflower"]
Overview
A perennial wildflower native to North America, known for its bright yellow flowers and adaptability to woodland habitats.
Benefits & Perks
["long-flowering","wildlife attractant (bees, butterflies, birds)","drought tolerant","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Helianthus |
| Botanical Name: | Helianthus divaricatus |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: border plantings, wildflower gardens, or naturalized areas
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"–30 to 40°C"}
- Hardiness: {"zones":"3–9"}
- Misting: rarely required
- Drainage: Moderately well-draining; avoid waterlogged conditions.
- Soil Type: Rich, loamy soil with good organic matter; well-draining but moisture-retentive.
Maintenance Level
- Maintenance Level: low
- Toughness Level: moderate
- Pruning Frequency: Annually after flowering; light pruning can be done as needed throughout the growing season.
- Pruning Intensity: Moderate; remove up to one-third of the plant if overgrown, but avoid heavy pruning during flowering
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade; 6–8 hours of direct sunlight daily, with some afternoon shade in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun in summer; adjust placement based on seasonal light changes.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun to partial shade
Rotate plants for even light exposure; use shade cloth in extreme heat; monitor for sunburn signs.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly but infrequently; ensure soil dries slightly between waterings; prioritize deep watering over frequent shallow applications.
Soil
well-drained, loamy soil with moderate organic matter
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure good drainage; amend with organic matter; maintain consistent moisture.
Temperature
Prefers temperate climates; ideal range 60–85°F (15–29°C); tolerates mild frosts but may struggle in prolonged extreme heat or cold.
Protect from frost; avoid sudden temperature swings; maintain consistent moisture in hot weather.
Fertilizing
every 4–6 weeks during spring and summer
Apply fertilizer sparingly; water well after feeding; avoid high-nitrogen formulas to prevent excessive foliage growth.
Propagation
Methods
Stem cuttings or division; stem cuttings are more common for home growers.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Late spring to early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light; maintain consistent moisture.
Medium
Well-draining potting mix with perlite or sand; can also root in water initially.
Hormone
Rooting hormone is recommended to improve success rates.
Timeline
Roots typically form in 2–4 weeks; plants may take 1–2 months to establish.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining mix, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain humidity with a plastic cover; avoid direct sunlight.
Pruning & Repotting
Pruning Guide
Method
Cut stems back to a healthy bud or lateral branch; remove spent flower heads to encourage reblooming.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove dead or damaged stems; focus on post-flowering maintenance.
Tools
Pruning shears, gloves, disinfectant for tools.
Checklist
Disinfect tools; prune after flowering; remove dead/damaged stems; shape as desired.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
Increase pot size by 2–3 inches in diameter.
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh, well-draining soil; water thoroughly.
Suggestions
Repot every 2–3 years or when roots fill the container; beneficial for container-grown plants to refresh soil and space.
Checklist
Choose appropriate pot size; use fresh soil mix; trim roots if necessary; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure proper drainage; avoid overhead watering.
How to Apply Water Properly
Water at the base of the plant, targeting the root zone; apply until water drains from the bottom; avoid wetting foliage to prevent fungal issues; water early in the morning for optimal absorption.
Watering Schedule Tips
Water deeply once a week during active growth; reduce frequency in winter or during dormancy. Adjust based on rainfall and soil moisture retention.
Soil Improvement
Add compost or well-rotted manure to enhance fertility; incorporate perlite or sand for drainage; mulch to retain moisture.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf scorch, stunted growth, or premature flowering in excessive heat; leaf drop, discoloration, or dieback in cold stress.
Cold Stress
Low temperatures slow growth and can damage tender tissues; prolonged frost may kill above-ground parts but roots may survive.
Solution: Mulch heavily around the base; cover plants during frost events; move potted plants to sheltered locations.
Hot Stress
Excessive heat can cause wilting, leaf burn, and reduced flowering; may lead to water stress if not managed.
Solution: Provide afternoon shade; increase watering frequency; use mulch to retain soil moisture; ensure good air circulation.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; apply in early spring; water after application; avoid late-season feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring; avoid over-fertilizing, as Helianthus divaricatus is not heavy feeder; reduce or stop fertilizing in late summer.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicHelianthus divaricatus is not considered toxic to cats. The plant does not contain known compounds that are harmful to felines.
⚡ Toxic If:
Generally not toxic
Dogs
Non-toxicHelianthus divaricatus is not considered toxic to dogs. The plant does not contain known compounds that are harmful to canines.
⚡ Toxic If:
Generally not toxic
Humans
Non-toxicHelianthus divaricatus, commonly known as woodland sunflower, is not considered toxic to humans. It is a native North American perennial plant that is generally safe for human contact and consumption.
⚡ Toxic If:
Generally not toxic
Frequently Asked Questions
Q: Does Helianthus divaricatus attract pollinators?
A: Yes, it is highly attractive to bees, butterflies, and other pollinators.
Q: Is this plant suitable for shaded areas?
A: Yes, it tolerates partial shade and is well-suited for woodland gardens.
Q: Is Helianthus divaricatus toxic to pets?
A: No, it is non-toxic to dogs and cats.
Quick Reference
| Family: | Asteraceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
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