Plant Library

An index of the perennial plants grown and offered at Glenraven.

Achillea 'Walther Funcke'

Achillea 'Walther Funcke'

Yarrow

10365765779767|Achillea 'Walther Funcke'|Yarrow|

An upright yarrow with flat flower heads in warm orange tones that age to soft apricot and buff. Foliage is finely divided and green, forming a compact, steady clump in full sun and freely draining soil. Flowering runs through summer and responds well to a light shear after the first flush.

A reliable choice for borders, meadows, and naturalistic plantings, where its muted colours blend easily with grasses and late perennials. Attractive to bees and tolerant of dry, lean soils once established.

|June-Sept|orange to apricot|green|upright clump|sunny borders; meadows; naturalistic plantings; pollinator gardens|50|50|full sun|average to dry|well-drained; tolerant of poor or sandy soils|low|reblooms when cut back after first flush; colours soften attractively as blooms age|yes|summer bloom; warm colour tones; dried seed heads into autumn|pollinators; beneficial insects|3||compact clump; long flowering season; colour fades gracefully; drought tolerant|//glenravennursery.com/cdn/shop/files/achillea_walther_funcke.jpg?v=1765310204&width=800|
Achillea filipendulina ‘Parker's Variety'

Achillea filipendulina ‘Parker's Variety'

Fernleaf Yarrow

10365853696311||Fernleaf Yarrow|

A tall fernleaf yarrow with broad, flat heads of clear yellow carried on firm stems in midsummer. The foliage is finely divided and grey green, forming a steady clump that holds its shape in open, sunny sites. Flowers last well on the plant and in the vase and the clump responds to division every few years in spring or autumn.

|July|yellow|grey green|upright clump|sunny borders; dry meadows; gravel gardens; cut flower beds|100|50|full sun|average to dry|well-drained; poor to moderately fertile soils|low|long-lived; divide every few years to maintain vigour|yes|summer bloom; persistent winter structure (old stems)|pollinators; beneficial insects|4||clump-forming; upright; long-lived; drought-tolerant once established|//glenravennursery.com/cdn/shop/files/AC909CEA-AD3B-42A5-BAF3-4EACE8AC7685_1_102_o.jpg?v=1767570769&width=800|
Achillea millefolium

Achillea millefolium

Yarrow

10365854023991|Achillea millefolium|Yarrow|

A finely textured yarrow forming low, spreading clumps of aromatic, divided foliage. Flat-topped flower heads appear through much of summer, typically in soft whites or pale blush tones. Plants thrive in full sun and freely draining soils, tolerating lean, sandy, or disturbed ground where they hold their shape well.

The species is a fast grower and can spread steadily in open sites, making it useful for meadows, green roofs, and restoration work. A light shear after the first flush encourages further flowering. Highly attractive to bees, hoverflies, and other beneficial insects, and resilient to drought and foot traffic once established.

|June–Sept|white to pale blush|green to grey green|spreading clump|meadows; green roofs; disturbed site restoration; sunny borders; pollinator plantings|45|45|full sun|average to dry|well-drained; tolerant of poor or sandy soils; suitable for disturbed sites|low|spreads steadily in open sites; reblooms with shearing; divide every few years to maintain vigour|yes|long summer bloom; fine textured foliage; structural seed heads|pollinators; beneficial insects|3||finely divided foliage; spreading clump; drought tolerant; long flowering season; resilient to light foot traffic|//glenravennursery.com/cdn/shop/files/achillea_millefolium_2.jpg?v=1765308385&width=800|
Achillea millefolium ‘Hella Glashoff’

Achillea millefolium ‘Hella Glashoff’

Yarrow

10365854220599|Achillea millefolium ‘Hella Glashoff’|Yarrow|

A compact millefolium yarrow with flattened heads of soft sulphur-yellow flowers held above finely divided green foliage. It forms a steady clump in open, sunny sites and flowers over a long season, with a useful second flush if cut back after the first display. Well suited to borders, meadows, and naturalistic plantings, and valued for its reliability and pollinator appeal.

|June–Sept|sulphur yellow|green|upright clump|sunny borders; meadows; naturalistic plantings; pollinator gardens|60|50|full sun|average to dry|well-drained; tolerant of poor, sandy, or gritty soils|low|responsive to cutting back after first flowering; reliable rebloomer; good cut flower|yes|summer bloom; fine textured foliage; dried seed heads for autumn structure|pollinators; beneficial insects|3||clump-forming; upright; finely divided foliage; non-running millefolium type|//glenravennursery.com/cdn/shop/files/achillea_hella_glashoff.jpg?v=1765307192&width=800|
Achillea millefolium ‘Red Velvet’

Achillea millefolium ‘Red Velvet’

Yarrow

10365765746999|Achillea millefolium ‘Red Velvet’|Yarrow|

A compact yarrow with deep red flower heads that hold their colour well through the season, fading only slightly as they age. Flowers are carried above finely divided green foliage and appear over a long period in summer. Plants form a steady clump in open, sunny sites and benefit from a light shear after the first flush to encourage further bloom.

Suitable for borders, meadows, and naturalistic plantings where its clear red tones combine well with grasses and late perennials. Attractive to bees and other insects, and tolerant of dry, freely draining soils.

|June-Sept|rich crimson-red|green|upright clump|sunny borders; meadows; naturalistic plantings; pollinator gardens|60|50|full sun|average to dry|well-drained; tolerant of poor or sandy soils|low|reblooms with shearing after first flush; colour holds well in heat; forms a stable clump|yes|summer bloom; strong colour; dried seed heads into autumn|pollinators; beneficial insects|3||compact clump; long flowering season; good colour retention; drought tolerant|//glenravennursery.com/cdn/shop/files/282FF9A4-CAAD-4333-A71E-5058CF13CE0D_1_105_c.jpg?v=1767571121&width=800|
Aconitum carmichaelii ‘Barker’s Variety’

Aconitum carmichaelii ‘Barker’s Variety’

Monkshood

10365765845303|Aconitum carmichaelii ‘Barker’s Variety’|Monkshood|

A tall monkshood with strong, upright stems and deep violet-blue hooded flowers carried in late summer to early autumn. Foliage is deeply divided and dark green, forming a substantial clump in moist, fertile soil. Best grown in partial shade or sun where the soil remains cool and evenly moist.

A long-lived perennial that provides height and late-season structure. All parts of the plant are toxic if ingested and may irritate skin.

|Aug–Oct|violet blue|green|upright clump|borders; woodland edge; moist partial shade; late-season structure|150|60|partial shade; full sun in cool, moist soil|moist, well-drained|fertile, humus-rich, moisture-retentive, well-drained|low|all parts toxic; may need staking in exposed sites; avoid dry soils|yes|late summer to autumn bloom; strong vertical form|bumblebees and late-season pollinators|4||upright stems; late-season flowers; deeply divided foliage; long-lived|//glenravennursery.com/cdn/shop/files/aconitum_barkers_variety.jpg?v=1765316820&width=800|
Actaea cordifolia ‘Blickfang’

Actaea cordifolia ‘Blickfang’

Heartleaf Baneberry

10365765878071|Actaea cordifolia ‘Blickfang’|Heartleaf Baneberry|

A vigorous woodland perennial with broad, heart-shaped green leaves and tall, tapering white flower spikes in late summer. Plants form a substantial clump in moist, humus-rich soil and steady shade, though they tolerate morning sun where the ground stays cool. Flower spikes rise well above the foliage, giving clear vertical lines in darker plantings.

Long lived and slow to establish, with good presence once settled.

|July-Oct|cream|green|upright clump|woodland plantings; shaded borders; moist, humus-rich soils|180|90|partial shade to full shade|moist, well-drained|fertile, humus-rich, moisture-retentive soils|low|slow to establish; prefers cool, consistently moist soil; avoid drought|moderate|large foliage; late summer bloom; vertical flower spikes|pollinators (late-season insects)|4||large foliage; tall white spires; shade tolerant; long lived|//glenravennursery.com/cdn/shop/files/actea_blickfang.jpg?v=1765317465&width=800|
Actaea matsumurae 'White Pearl'

Actaea matsumurae 'White Pearl'

Bugbane

10365765910839|Actaea matsumurae 'White Pearl'|Bugbane|

An upright, late flowering bugbane distinguished by its slender white wands that lift above a dense mound of divided green foliage. The flowers are lightly scented and catch the soft light of early autumn, adding a quiet vertical rhythm to shaded borders. Growth is steady rather than fast, settling into a durable clump when given humus-rich soil and consistent moisture. Useful for bringing height and a gentle sense of movement to woodland plantings as other perennials begin to fade.

|Aug-Sept|white|green|upright clump|shaded borders; woodland gardens; moist, humus rich beds|160|60|part shade to full shade|average to moist|moist, humus rich, well drained|medium|benefits from consistent moisture and shelter from strong wind; allow space for tall flower wands|yes|late summer bloom; vertical accents; seed heads into autumn|pollinators; night flying insects|4||tall scented flower spikes; shade tolerant; late flowering; good in woodland plantings|//glenravennursery.com/cdn/shop/files/actaea_white_pearl.jpg?v=1765321395&width=800|