Spiraea douglasii
TAXONOMY
FamilyRosaceae
GenusSpiraea
Zone4
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Plants of the World OnlineABOUT
Spiraea douglasii, commonly known as Douglas' spirea or hardhack, is a deciduous shrub native to western North America. It typically grows in moist, temperate climates and is known for its dense clusters of pink flowers. The plant is part of the Rosaceae family and thrives in temperate regions. It undergoes a dormancy period during the winter months.
ALSO KNOWN AS
Douglas' Spirea
Drimopogon Menziesii
Drimopogon douglasii
Spiraea douglasii f. douglasii
Spiraea douglasii subsp. douglasii
Spiraea douglasii var. douglasii
Spiraea douglasii var. roseata
OVERVIEW
VPDCalculate
WaterWet
SoilLoamy
LightDirect Bright (6 Hours)
Temperature15° C
Humidity60%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Douglas' spirea prefers bright, direct sunlight and should be watered regularly to keep the soil evenly moist. It thrives in moderate temperatures and benefits from a humid environment. Regular pruning is recommended to maintain its shape and encourage new growth.Soil
This shrub prefers loamy soil with good drainage. It can tolerate a range of soil types but performs best in moderately fertile soil. Ensure the soil remains moist but not waterlogged.Fertilizer
Use a balanced fertilizer with an N-P-K ratio of 10-10-10. Fertilize in the early spring and again in mid-summer to support healthy growth and flowering.Repotting
Repotting is generally not necessary for outdoor shrubs. However, if grown in a container, repot every 2-3 years to refresh the soil and provide more space for root growth. Repot in early spring before new growth begins.Propagation
Propagate Spiraea douglasii through softwood cuttings taken in late spring or early summer. Dip the cuttings in rooting hormone and plant them in a well-draining soil mix. Keep the cuttings moist and in a bright, indirect light until roots develop.Pruning
Prune Douglas' spirea in late winter or early spring before new growth starts. Remove any dead or damaged branches and thin out crowded areas to improve air circulation. Regular pruning helps maintain the plant's shape and encourages vigorous flowering.Toxicity
Spiraea douglasii is not known to be toxic to pets or humans. However, as with all plants, it is best to prevent pets and children from ingesting any part of the plant.Additional
Douglas' spirea is a hardy shrub that can tolerate a range of conditions once established. It is often used in landscaping for its attractive flowers and ability to thrive in moist areas. Mulching around the base of the plant can help retain soil moisture and suppress weeds.REVOLUTIONIZE YOUR PLANT CARE
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