Height:

30.0-36.0 Inches

Spread:

36.0-42.0 Inches

Hardiness Zones:

3,4,5,6,7,8

Flower Color:

Red shades

Foliage Color:

Green shades

Sunlight:

Full Sun (> 6 hrs. Direct Sun)

Water Requirements:

Low Water Needs Average Water Needs

Soil Quality:

Poor Soil Quality Average Soil Quality

Soil Chemistry:

Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0)

Bloomtime:

Early Summer Midsummer Late Summer

Attracts Wings:

Attracts Butterflies Bee Friendly

Critter Resistant:

Deer Resistant Rabbit Resistant

Seasonal Interest:

Dried Seed Heads

Growth Rate:

Rapid

Garden Style:

Patio Container Cottage Eclectic Prairie

Other Features:

Border Plant Cut Flower Dried Flower Drought Tolerant Easy To Grow Mass Planting Salt Tolerant

Origin:

Native to North America

Yarrow is one of the easiest perennials to grow and is a good choice for beginners. All it needs is full sun and well-drained soil. It thrives in average to poor soil and is drought tolerant once established. Plants grown in rich soil tend to be tall and floppy. After the flowers have faded, cut the plant back by half. This will likely stimulate a second flush of blooms in late summer. Most varieties do not come true from seed.

Growing Temperature:

60-65° F

Holding Temperature:

50-60° F

Soil PH:

5.5-6.2

EC (What is EC?):

1.5-2.5 pour through method

Fertility:

Feed with 50-75 ppm at every other watering. Do not over-fertilize, achillea are not heavy feeders.

For Controlled Release or Slow Release Fertilizer, see your preferred supplier for recommended rates for incorporation or top dressing, as it varies by fertilizer.

Vernalization:

Beneficial at 10 weeks of temperatures below 40° F.

Pests & Diseases:

Aphids are the most common pest. Thrips, spider mites, root-knot nematode, slugs, Asiatic garden beetle, caterpillars, oriental beetle can also be an issue.

Botrytis, Crown gall, powdery mildew, Rhizoctonia and other stem and root rots are the main diseases to watch out for.

Potting & Timing:

Root Trimming: Roots may be trimmed to fit pot.
Some growers pinch back the original shoot (from a liner) after the roots have formed to encourage branching.

Moisture:

Allow plants to dry thoroughly between waterings.

Planting Level:

Plant crown even with soil line.

PGRs/Pinching:

Multiple applications are typically needed to adequately control height of larger varieties. B-Nine (Daminozide) at 2,500 ppm, tank mixtures of B-Nine at 2000 ppm and Sumagic (Uniconazole) at 3 ppm, or Sumagic alone at 5-10 ppm are all effective.

Lighting:

Bulk plants under short days to prevent early flowering. Achillea flower best under long days.

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