1. How to grow achillea - BBC Gardeners World Magazine

  2. These 15 Self-Seeding Yarrow Varieties Are A Dream For Organic ...

  3. Top Achilleas (Yarrows) to Grow - BBC Gardeners World Magazine

  4. Yarrow 'Petra' | PLNT - whatplantisthis.io

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  8. Achillea (Yarrow) How to Plant, Grow and Care for …

    Achillea. A dependable hardy perennial, with excellent architectural qualities. Varies in height and form, from low spreading mat forming plants too large tall specimens. It has a long flowering period from mid-summer onwards and will …

  9. Achillea &Petra& | yarrow &Petra& Herbaceous …

    yarrow 'Petra' A clump-forming perennial to 60cm tall with finely-divided, greyish-green foliage. Dense, flattened clusters of tiny dark red flowers with white eyes are borne form summer into autumn; the deep red colour of this cultivar's …

  10. Achillea ‘Petra’ - Urban Jungle

    Deciduous clump-forming perennial with finely-divided greyish-green foliage. Dense, flattened clusters of tiny dark red flowers with white eyes are borne form summer into autumn. Does not tend to fade with age. Attractive to …