Plants that will generally grow to a height that is above 1.2m.
Taller Flowering
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Out of Stock
Vine Reed. Gradually forms imposing mounds of tough leathery evergreen foliage, from which arise tall...
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Forms mounds of relatively bright white centrally banded green foliage during spring from which arise,...
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Distinctive selection forming clumps of bright yellow green variegated leaves during spring, from which come...
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Mounds of green foliage produce masses of strongly vertical flower stems topped with light and...
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Mounds of green foliage produce masses of strongly vertical flower stems topped with light and...
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Out of Stock
This long established selection offers mounds of soft green & white striped leaves during spring...
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This long established selection offers mounds of soft green & white striped leaves during spring...
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Clumps of bright green foliage support masses of tall narrow upright stems with a slightly...
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Clumps of bright green foliage support masses of tall narrow upright stems with a slightly...
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Toe Toe. Perhaps the most graceful of all the pampas with tall elegantly curving, gently...
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Out of Stock
A form of native tufted hair grass selected at Knoll Gardens for its large mounds...
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A form of native tufted hair grass selected at Knoll Gardens for its large mounds...
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Outstanding form making impressive rounded mounds of attractive narrow leaves covered in masses of delicate...
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Outstanding form making impressive rounded mounds of attractive narrow leaves covered in masses of delicate...
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Compact cultivar forming neat mounds of arching foliage and masses of white & beige flowers...
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Rather beautiful Kurt Bluemel selection, possibly having Miscanthus transmorrisonensis as a parent, with its many...
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A Knoll Gardens selection. Relatively compact mounds of fine green foliage topped by many delicately...
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A Knoll Gardens selection. Relatively compact mounds of fine green foliage topped by many delicately...
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Out of Stock
A distinctive form with good red upright flowers during later summer and foliage that is...
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Lovely airy form making relatively compact mounds of attractive narrow leaves covered in masses of...
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Uncommon and rather nice form with attractive loose mounding habit and deep pinky red flowers...
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Superb selection forming mounds of narrow foliage that can offer many shades of bright copper,...
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Superb selection forming mounds of narrow foliage that can offer many shades of bright copper,...
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A long established, and superb selection, with many elegant slightly pendant initially dark pinkish flowers...
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A long established, and superb selection, with many elegant slightly pendant initially dark pinkish flowers...
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Aptly named selection offering compact mounds of narrow foliage which is topped by freely produced...
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Attractive pale pink toned flowers that quickly turn a soft silvery white are produced in...
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An excellent long established selection forming mounds of green foliage and topped by many gently...
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Relatively narrow green foliage forming distinct compact rounded mounds that are topped with many beautiful...
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Relatively narrow green foliage forming distinct compact rounded mounds that are topped with many beautiful...
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An amazing old cultivar; the standard by which others are judged. Forms large striking columns...
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Named for grass nurseryman Ernst Pagels this impressive selection makes large, gradually spreading clumps that...
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Out of Stock
Distinctive and very beautiful, having delicate looking golden flower plumes held high above mounds of...
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Distinctive and very beautiful, having delicate looking golden flower plumes held high above basal mounds...
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Large clumps of relatively wide green leaves are topped with tall heads of light flowers...
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A long established selection forming mounds of broad green leaves from which arise tall, noticeably...
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Out of Stock
Relatively compact mounds of neat green foliage are topped by many slightly pendulous heads of...
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A NEW KNOLL GARDENS SELECTION FOR MAY 2025 A new and rather distinctive selection...
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A most lovely, tall and vigorous selection with elegant Rosi red flowers that turn a...
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Mounds of bright green leaves produce many fairly upright striking deep pinky red to silver...
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A long established selection having tall upright stems of deep green foliage with distinct silver...
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Miscanthus Sunset is a new release for Autumn 2024 from Knoll Gardens and is an...
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A rather lovely selection with graceful habit and many pale vanilla white flowers from high...
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Lovely selection of the native tall purple moor grass, with tidy mounds of foliage topped...
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Selected at Knoll Gardens this beautiful form of native tall purple moor grass has light...
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A long established selection of native tall purple moor grass with outstanding gently pendulous, initially...
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Out of Stock
Distinctive selection of British native tall moor grass, Molinia arundinacea, Skyracer has a noticeably upright...
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Out of Stock
An aptly named form of British native tall purple moor grass, Molinia arundinacea, forming clumps...
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Strongly upright form of British native tall purple moor grass, Molinia arundinacea, with masses of...
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Clump forming mounds of grey green leaves topped by characteristic very narrow delicately arching flowerstems...
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A really tall prairie switch grass selected for its comparatively glaucous blue leaves and later...
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A tall switch grass selection with foliage of an attractive glaucous grey blue colour. Has...
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A most lovely selection of switch grass chosen for its distinctive greyish blue stems, upright...
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A most lovely selection of switch grass chosen for its distinctive greyish blue stems, upright...
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A lovely long established selection forming clumps of very upright grey green foliage topped with...
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Out of Stock
A lovely long established selection forming clumps of very upright grey green foliage topped with...
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A recent Knoll Gardens selection. Produces masses of airy pink red flowers supported by generally...
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An invaluable upright selection having a very distinctive narrow vertical habit and wide greyish green...
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An invaluable upright selection having a very distinctive narrow vertical habit and wide greyish green...
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Most lovely form of red switch grass grown specially for its freely produced, cloud like...
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Most lovely form of red switch grass grown specially for its freely produced, cloud like...
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Sea Mist is a recent Knoll Gardens selection from Panicum amarum, and forms clumps of...
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A long established selection forming relatively lax mounds of green foliage topped by masses of...
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Great recent selection having a nicely upright habit with blueish grey green foliage topped with...
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A rather lovely, tall and elegant selection having a strongly upright habit and greenish grey...
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A rather lovely, tall and elegant selection having a strongly upright habit and greenish grey...
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Out of Stock
A long established selection forming relatively lax mounds of green foliage topped by masses of...
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A long established selection forming relatively lax mounds of green foliage topped by masses of...
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Gradually spreading mounds of green foliage producing many arching stems topped with distinctive elongated, cylindrical...
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The giant oat is amongst the most impressive of grasses, forming clumps of tough foliage...
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Out of Stock
Probably the tallest selection of golden oat grass making clumps of tough foliage and producing...
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A relatively compact selection of golden oat grass from Knoll Gardens. Combining tough green foliage...
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Mounds of soft green divided foliage, from which arise tall stems that are topped with...
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Mounds of soft green divided foliage, from which arise tall stems that are topped with...
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Out of Stock
Gradually spreading clumps of strong purple black stems carrying attractive heads of lilac blue flowers...
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A rather lovely tall selection having a generally upright habit and branches that are covered...
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An imposing plant having a spreading habit and producing many flattened heads of yellow centred...
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Excellent selection of Bidens aurea (synonym; Bidens heterophylla), with masses of lemon yellow, white tipped...
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Tall, elegant and floriferous with upright stems clothed in grey green leaves and topped by...
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Strong basal clumps of large light green divided leaves and rather striking tall wiry stems...
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An elegant compact selection offering upright stems and purple flowers from summer onwards. Popular with...
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Joe Pye Weed, Eupatorium maculatum. Superb plant with tall, often reddish stems which are topped...
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A noticeably more compact form of Joe Pye Weed, Eupatorium maculatum, producing numerous attractive heads...
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This selection of Joe Pye Weed, Eupatorium maculatum, is perhaps a little shorter than most...
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Beautiful selection of Joe Pye Weed, Eupatorium maculatum, with dark stems and large heads of...
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Gradually spreading clumps produce imposing tall stems clothed with vine like foliage and which are...
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A bronze form of fennel having strong upright stems and fine narrow foliage forming hazy...
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An impressive tall yellow daisy forming slowly spreading clumps of stout, generally upright stems that...
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Lovely delicate looking selection forming mounds of wide green leaves topped with relatively tall high...
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Most impressive large, bulky, clump forming feature plant making strong stems covered in large pointed...
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Out of Stock
A lovely selection having mounds of wide green leaves that are topped with many freely...
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Attractive soft white selection whose freely produced flowers create a wonderfully light and airy effect...
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Distinctive and unusual whorls of soft lilac tubular flowers on branching purple stems arising from...
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Distinctive and unusual whorls of soft lilac tubular flowers on branching purple stems arising from...
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A striking and rather lovely tall plant having self supporting upright stems that are clothed...
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A striking and rather lovely tall plant having self supporting upright stems that are clothed...
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Truly wonderful plant with great presence. From large waxy coated blue grey leaves come elegant...
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Forms attractive clumps of pinnate foliage from which arise relatively tall wiry stems which are...
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A lovely selection of Sanguisorba officinalis, having showy pinky red cylindrical flowers that are held...
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Make good clumps of attractive divided foliage from which come generally upright light and fluffy...
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A slightly more compact form than Sanguisorba canadensis, with attractive divided foliage from which come...
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A Knoll Gardens selection. Mounds of attractive green foliage from which arise tall stems that...
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This elegantly tall form of Sanguisorba tenuifolia alba has mounds of finely divided light green...
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A selection form the National Collection that forms clumps of attractive pinnate green leaves which...
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Attractive selection, with a fab name, and many highly attractive cylindrical pink flowers held on...
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Out of Stock
Mounds of finely divided light green foliage support airy spikes of small catkin like white...
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Out of Stock
A tall, airy form producing mounds of divided green foliage that is topped with the...
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A tall, airy form producing mounds of divided green foliage that is topped with the...
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An especially lovely selection of golden rod with an impressive habit and masses of open...
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Excellent form of golden rod with bright yellow flowers held on slightly pendulous spikes that...
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Excellent form of golden rod with bright yellow flowers held on slightly pendulous spikes that...
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Rather lovely form selected for its long very dark nearly black stems topped with fluffy...
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One of the most distinctive and rather elegant selections, with superb purple flushed grey blue...
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Out of Stock
Produces tall stems that are clothed with dainty green foliage and which are topped with...
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Striking tall wiry stems producing purple flowerheads during summer. Hugely popular with gardeners and all...
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Distinct and not often seen plant with tall sturdy stems topped with attractive flattish heads...
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An elegant selection forming clumps of noticeably upright stems which are topped with narrow upright...
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Excellent Oudolf selection offering masses of upright pointing, narrow soft pink spikes of flowers atop...
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A more recent selection having upright stems and attractive foliage that is topped with spikes...
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Beautiful relatively compact selection forming clumps of upright stems that are topped with elongated upright...
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Aptly named selection forming clumps of generally upright stems from which arise freely produced spikes...
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Aptly named selection forming clumps of generally upright stems from which arise freely produced spikes...
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A distinctive and beautiful selection forming clumps of upright stems that are topped with many...
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A distinctive and beautiful selection forming clumps of upright stems that are topped with many...
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Out of Stock
A very lovely selection forming clumps of upright stems that are topped with elongated finger...
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A relatively recent selection forming clumps of upright stems which are topped with elongated finger...
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A relatively recent selection forming clumps of upright stems which are topped with elongated finger...