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Description

The Common yarrow is a clumping perennial that can grow 18-30 in. tall and as wide. Foliage is comprised of finely divided medium green leaves; white flowers occur in spring. It is a highly adaptable plant for mixed flower gardens, on banks, in bioswales, and around boulders in residential gardens and commercial landscapes.

Several cultivars of Common yarrow are available from nurseries and garden centers on a seasonal basis. Some of these include: A. m. 'Cameo' has salmon flowers; A. m. 'Cerise Queen' has deep magenta flowers; A. m. 'Island Pink' is native to offshore islands and has soft magenta-pink flowers; A. m. 'Lavender Beauty' has soft lavender and white flowers; and A. m. 'Paprika' has red flowers with yellow centers. The white flowering species is also grown as a substitute for turf grass where it can be maintained with as few as 6-8 mowings each year and with low amounts of water during summer.

Water Needs

Common yarrow is one of the easiest plants to grow in Inland Empire gardens in areas of partial shade to full sun and when sustained with low summer water. The chart shown below provides a recommended baseline guide to the monthly irrigation schedule and volume of supplemental water needed to maintain healthy growth throughout the average year. It should be noted there are several months indicated by an asterisk (*) when winter rains can provide sufficient moisture and irrigation is not needed. The high and low range of moisture indicates it can grow with varying amounts of water and you should make irrigation adjustments based on field observations of growth and character. The high end of this moisture range is recommended when this yarrow is planted as a lawn substitute to help sustain better foliage character under sunny conditions and with foot traffic.

Irrigation Schedule and Graph

Low Water Use Plants

Irrigation Schedule 2

  Jan* Feb* Mar* Apr May Jun Jul Aug Sep Oct Nov* Dec*
Runs per Month 0x to 2x 0x to 2x 0x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 1x to 2x 0x to 2x 0x to 2x
Inches per Run 1" 1" 1" 1" 1" 1" 1" 1" 1" 1" 1" 1"
 
Inches per Month 0" to 2" 0" to 2" 0" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 1" to 2" 0" to 2" 0" to 2"

Range of supplemental summer water: 7"-14"
Range of supplemental winter water: 0"-10"

 
0"-2"
0"-2"
0"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
1"-2"
0"-2"
0"-2"
  Jan* Feb* Mar* Apr May Jun Jul Aug Sep Oct Nov* Dec*
For more information on how to use this Irrigation Schedule and Graph, follow this link.

For information how to calculate your irrigation system’s schedule and precipitation rate, please follow this link.

Plant Properties

Plant Type: Ground cover, Perennial, Native
Foliage Character: Evergreen
Habit: Spreading, Clumping
Growth Rate: Moderate
Height: 18 in. - 30 in.
Width: 18 in. - 30 in.
Water Needs: Low 2
Foliage Color: Medium green, Gray green
Flower Color: Red
Flower Season: Spring
Soil Adaptations: Well-draining soil, Sand, Clay, Calcareous soil
Exposure Adaptations: Moderate shade, All day sun
Function: Rock gardens, Residential spaces, Raised planters, Grouped, Flowering accent plant, Container plant, Borders, Fragrant foliage, Attracts butterflies, Small spaces

Maintenance

Cut back hard as needed in winter. Larger patches can be done with a string trimmer (weed whacker) (2). If using a string trimmer, yarrow with woody flower stems still attached you will likely need a higher power gas tool. If the plants are just leaves, an electric string trimmer should be sufficient.

References

Associations

Plant Palettes

Plant Lists