Scientific Name : Achillea
Common Name : Yarrow
Hardiness Zone : 4a - 8b
Hardiness Degree : -40°F (-40°C)
Blooming Season : Late Spring, Summer, Autumn, Late Summer
Plant Habit : Upright
Characteristics : Drought Tolerant, Attracts Hummingbirds, Rabbit Resistant, Winter Interest (regional), Colorful/Attractive Foliage, Scented Foliage, Low Maintenance, Frost Tolerant, Attracts Bees, Attracts Butterflies, Deer Resistant
Water : Light
Fertilizer : Once a month
Spacing : 12 - 18" (30 - 46cm)
Height : 18 - 24" (46 - 61cm)
Width : 12 - 18" (30 - 46cm)
Exposure : Sun
General Information : This sun lover tolerates poor soils and has silver-gray leaves with dense lemon-yellow blooms.
Idea & Tips : Multiplies by rhizomes.
Clumps should be pruned to stimulate Spring growth.
Fertilize Achillea in the Spring.
Grower Information : Bright yellow flowers over silvery foliage; wide heads come in early Summer and are slow to fade. If cut back, more leaves – and sometimes flowers – appear later.
Daylength : Plants grown under long days (greater than 13.5-hr. daylengths), occurring either naturally or by night-break lighting, will flower more rapidly and uniformly.
: Plant Maturity:
Cold treatment required for flowering. Plants should be bulked under natural short days for a 4-8 week period. Mature, bulked-up plants will respond more favorably to cold treatment.Temperature:
Plant Growth Regulators : B-Nine (Spray) 2,000-4,000 ppm, applied 1-3 times as needed.