Hill Farm Nursery

Achillea filipendulina – ‘Cloth of Gold’ Fernleaf Yarrow. Hill Farm, July 2014. Image: HFN

Perennial. Zone 2. Compositae. Syn. Achillea eupatorium (obsolete). Eupatorium referred to the plant’s native presence around the city of Eupatoria (Yevpatoria) on the Crimean coast. The species is native to Europe’s Caucasus Mountains, Turkey, Iran, Central Asia, and Afghanistan. There are a number of improved cultivars which are widely grown in gardens. ‘Cloth of Gold’ is a well-known older variety, which received the Royal Horticultural Society’s Award of Garden Merit in 1999.

Poor Fernleaf Yarrow – it seems to be named mainly for its resemblance to other plants! The specific names filipendulina refers to its foliar similarity to Meadowsweet, Filipendula species. The common name “Fernleaf” needs no explanation.

Esteemed horticulturalist William Robinson, in his 1883 masterwork, The English Flower Garden, had this to say:

Achillea eupatorium (sometimes called A. filipendulina) is a tall-growing, vigorous, herbaceous plant, somewhat woody in its lower growth. Its flowering corymbes are flat, bright yellow in colour, and elevated on stout stems to a height of 3 ft. to 4 ft.; they retain their beauty and freshness for at least two months. This is admirably adapted for a shrubbery border, where its brilliant yellow flowers and its erect habit of growth show to wonderful advantage amongst the evergreen foliage. It is native to the shores of the Caspian Sea, and is one of the finest of perennials.

Shining yellow flowers in flattened domes top strong 24-inch or taller stems. In habit, Fernleaf Yarrow is a non-invasive clump-former. Foliage is light sage-green, and warmly aromatic.

This is a superb everlasting and cutflower – heads can reach 5 inches or more across. Some years ago, when I was growing everlastings and making wreaths and arrangements for sale, this was outstanding for its effect and attractive colour.

Close-up of the tightly packed flower head, with 6-legged visitors. Completely pest-free, though frequented by insects of all sorts seeking nectar and pollen. Hill Farm, July 2014. Image: HFN

Fernleaf Yarrow is one of those bombproof plants which just keep on looking good (or at the very least decent) even in challenging conditions. It has times of great beauty – new spring foliage is downy-soft, pleasingly aromatic, and elegantly fern-like, while the huge corymbes of tiny, bright yellow flowers remain gloriously untarnished for an astounding length of time – but even when the gold fades to brown and the leaves get a bit dusty-looking round about the beginning of autumn it remains upright and respectable.

This plant is a star of the xeriscape garden, thriving in sunny and dry locations, though it is appreciative of some supplemental moisture at summer’s peak. However, too rich a soil and too much moisture will cause Fernleaf Yarrow to produce lush foliage at the expense of flowers.

This plant is reputed to be very deer resistant, likely because of its downy foliage and high aromatic oil content.