Helianthus hirsutus
TAXONOMY
FamilyAsteraceae
GenusHelianthus
Zone4
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Helianthus hirsutus, commonly known as the hairy sunflower, is a perennial plant native to North America. It belongs to the Asteraceae family and the Helianthus genus. This plant is known for its bright yellow flowers and hairy stems and leaves. It typically goes dormant in the winter months.
ALSO KNOWN AS
Hairy Sunflower
Helianthus diversifolius
Helianthus hirsutus var. hirsutus
Helianthus hirsutus var. stenophyllus
Helianthus hirsutus var. trachyphyllus
Helianthus hispidulus
Helianthus stenophyllus
Helianthus strumosus var. strumosus
OVERVIEW
VPDCalculate
WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Helianthus hirsutus 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 its light and water needs.Soil
The hairy sunflower prefers well-draining loamy soil. It can tolerate a range of soil types but performs best in soil that retains some moisture without becoming waterlogged. Good drainage is essential to prevent root rot.Fertilizer
A balanced fertilizer with an N-P-K ratio of 10-10-10 is suitable for Helianthus hirsutus. Fertilize the plant during the growing season, typically once a month, to support its growth and flowering.Repotting
Repotting is generally not necessary for Helianthus hirsutus as it is typically grown outdoors. However, if grown in a container, repotting should be done in the early spring before new growth begins. Choose a slightly larger pot and ensure good drainage.Propagation
Helianthus hirsutus can be propagated by seeds or division. Seeds should be sown in the spring, while division can be done in the early spring or fall. Ensure that each division has a healthy root system and is planted in well-draining soil.Pruning
Pruning is beneficial for Helianthus hirsutus to encourage bushier growth and more flowers. Prune back the plant in early spring to remove any dead or damaged stems. Deadheading spent flowers can also promote additional blooming.Toxicity
Helianthus hirsutus is not known to be toxic to pets or humans. However, as with any plant, it is best to prevent pets and children from ingesting any part of the plant.REVOLUTIONIZE YOUR PLANT CARE
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