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Helianthus strumosus
Helianthus strumosus
Helianthus strumosus
Helianthus strumosus

Helianthus strumosus

TAXONOMY

FamilyAsteraceae
GenusHelianthus
Zone4

ABOUT

Helianthus strumosus, commonly known as Pale-leaf Woodland Sunflower, is a perennial plant native to North America. It belongs to the Asteraceae family and is known for its bright yellow flowers that bloom in late summer to early fall. This plant is typically found in open woods and along forest edges. It undergoes a dormancy period during the winter months.

ALSO KNOWN AS

Beautiful Sunflower
Cheerful Sunflower
Paleleaf Woodland Sunflower
Perennial Sunflower
Helianthus altissimus
Helianthus australis
Helianthus decapitatus
Helianthus laevis
Helianthus macrophyllus
Helianthus mollis
Helianthus montanus
Helianthus neglectus
Helianthus saxicola
Helianthus strumosus subsp. decapitatus

OVERVIEW

WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Helianthus strumosus thrives in full sun and requires moderate temperatures. It prefers moderate humidity levels and should be watered when the soil partially dries out. This plant is relatively easy to care for but does require some attention to ensure it remains healthy.
Soil
This plant prefers well-draining loamy soil with a slightly acidic to neutral pH. It can tolerate a range of soil types but performs best in nutrient-rich soil. Ensure the soil has good drainage to prevent waterlogging.
Fertilizer
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize the plant during the growing season, typically in spring and early summer, to promote healthy growth and flowering.
Repotting
Helianthus strumosus can be repotted if necessary, usually in early spring before the growing season begins. Choose a pot that is slightly larger than the current one and ensure it has good drainage. Gently remove the plant from its current pot, loosen the roots, and place it in the new pot with fresh soil.
Propagation
This plant can be propagated through division or by seed. Division is best done in early spring or late fall. Carefully dig up the plant and separate the root clumps, then replant them in desired locations. Seeds can be sown directly in the garden in spring after the last frost.
Pruning
Pruning is beneficial for Helianthus strumosus to maintain its shape and encourage more blooms. Prune back the stems in late winter or early spring before new growth begins. Remove any dead or damaged stems throughout the growing season.
Toxicity
Helianthus strumosus is not known to be toxic to pets or humans. It is generally considered safe to grow in gardens where pets and children are present.
Additional
Helianthus strumosus can attract pollinators such as bees and butterflies, making it a great addition to a pollinator-friendly garden. It can also be used in naturalized areas or wildflower gardens for a splash of color.
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How To Grow Helianthus strumosus | EarthOne