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Achillea millefolium L.

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» common yarrow

Morphology / Appearance

Achillea millefolium L.

Character recognition:

Plant: Yarrow grows to 3 feet tall and has no branches except near the top.
Root: oblique or horizontal rhizome;
Stem: ascending, grooved, moderately hairy, simple or branched at the top of the foil;
Leaves: green leaves, 2-3 times pinnate divided ± hairless or slightly hairy, oblong lanceolate, 1-4 cm wide.
Flowers: ligulate; The flower head has 20-25 yellowish-white (rarely pink) ray flowers and similarly colored disk flowers.
Fruits: small achenes, 1.5 to 2 mm long.

Confusion: [...]

Taraxacum officinale
© 2012. Achillea millefolium L.

Copyright photo © C. Simion ::: 2012 - IASI ::: Achillea millefolium L.

Ecology / Plant spreading

Achillea millefolium L.

Bloom time: Apr , May , Jun , Jul , Aug , Sep
Flower color: white, pink
Plant type: perennial
Light: Sun, Part Shade
Propagation Material: Seeds

Seeds require light for germination, so optimal germination occurs when planted no deeper than one-quarter inch (6 mm). Seeds also require a germination temperature of 18-24° (64-75°F). It has a relatively short life, but may be prolonged by division in the spring every other year, and planting 12–18 in (30–46 cm) apart. It can become invasive [ 1 ].

Classification

Achillea millefolium L.

Cultivation / Plant breeding

Achillea millefolium L.

Seed - sow spring or early autumn in a cold frame. The seed usually germinates in 1 - 3 months [ 2 ]. When large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. Division in spring or autumn. Very easy, the divisions can be planted direct into their permanent positions. Divisions succeed at any time of the year. Basal cuttings of new shoots in spring. Very easy, collect the shoots when they are about 10 cm tall, potting them up individually in pots and keeping them in a warm but lightly shaded position. They should root within 3 weeks and will be ready to plant out in the summer.

 

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