Plant Data
Sheet
Species
(common name, Latin name)
Yarrow, Achillea
Millefolium
Range
Yarrow is distributed throughout the
Climate,
elevation
Yarrow is generally found at elevations of 1200-3350 m but can also be found as low as sea level.
Local
occurrence (where, how common)
State
route 520 at Montlake, 1 plant.
Habitat
preferences
Yarrow grows in meadows and pastures, along stream edges, in sand dunes, and along the edge of woodlots. It tends to grow on poor soils and is very drought tolerant.
Plant
strategy type/successional stage (stress-tolerator, competitor,
weedy/colonizer, seral, late successional)
Early successional
Associated
species
May be collected as: (seed, layered, divisions, etc.)
Flowering starts in April at lower elevations continuing through September at higher elevations. Fruiting occurs during August and September.
Collection
restrictions or guidelines
Collect seed heads and allow them to air dry indoors for at least a week before cleaning.
Crush the heads with a rolling pin to remove the nutlets, then sieve the nutlets and chaff to separate the seed. Cold store dry seeds in a sealed container.
Seed
germination (needs dormancy breaking?)
Seeds are nondormant and
germinate over a variety of temperatures.
Seed
life (can be stored, short shelf-life, long shelf-life)
Once
dried, seeds can be stored for a medium amount of time.
Recommended
seed storage conditions
Cold store dry seeds in a sealed container.
Propagation
recommendations (plant seeds, vegetative parts, cuttings, etc.) Sow
indoors in late winter and transfer to larger containers in six weeks, or sow
outdoors in late April.
Soil or medium requirements (inoculum necessary?)
May be grown in
well-drained, moist soil but they establish best with the addition of
fertilizer. They grow best in full sun,
but will tolerate some shade.
Installation
form (form, potential for successful outcomes, cost)
Seed, seedlings are the best form for installation.
Recommended
planting density
Care
requirements after installed (water weekly, water once etc.)
Moderate to no
watering after it is established.
Normal
rate of growth or spread; lifespan
Moderate
lifespan, up to 3 feet tall.
Sources
cited
Propagation of
Plants database http://plants.usda.gov/cgi_bin/topics.cgi
Data
compiled by
Doug Schmitt