Achillea (Yarrow)

Delicate, fern-like foliage with flat terminal flower heads. Flowers are long-lasting and excellent for cutting. Plants are drought tolerant and thrive in poor, dry soils. Good for summer color in the mid-border area.

Growing Temperature:	60-65° F
Soil pH:	5.5-6.2
Fertility:	Feed with 50-75 ppm at every other watering. Do not over-fertilize, achillea are not heavy feeders.
Pests and 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.
Potting and 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.