Ornamental grasses for Minnesota 1 © 2011 Regents of the University of Minnesota. All rights reserved. 2 FEATURES OF ORNAMENTAL GRASSES Few insect of disease problems Require little or no supplemental fertilizer Little maintenance except spring cut-back More than one season of interest Fast growing Wide variation in texture, height and foliage color Movement: audio and visual 3 © 2011 Regents of the University of Minnesota. All rights reserved. blue oatgrass 4 hakone grass 5 feather reedgrass 6 feather reedgrass 7 red switchgrass 8 miscanthus Graziella 9 miscanthus Graziella 10 miscanthus Graziella 11 red flame miscanthus 12 switchgrass 13 giant miscanthus 14 15 color variation 16 autumn light miscanthus 17 MISCONCEPTIONS ABOUT ORNAMENTAL GRASSES Lack of cold hardiness | many different kinds are hardy in USDA Zone 4 Invasive roots make these plants difficult to contain | 95% are bunch grasses and form dense clumps 18 © 2011 Regents of the University of Minnesota. All rights reserved. feather reedgrass 19 20 21 silver spikegrass 22 fall blooming reedgrass 23 windplay moorgrass 24 molinia 25 little bluestem 26 prairie dropseed 27 crimson fountaingrass 28 fountain grass 29 30 31 32 big bluestem 33 34 little bluestem 35 switch grass 36 37 38 sedges 39 carex flava 40 mace sedge 41 palm sedge 42 palm sedge 43 black sedge 44 tufted hairgrass 45 46 hakone grass 47 cordgrass 48 aureomarginata 49 GRASSES WITH INVASIVE RHIZOMES Miscanthus sacchariflorus – miscanthus Leymus (Elymus) – blue rye Phalaris – ribbon grass Spartina – prairie cordgrass 50 © 2011 Regents of the University of Minnesota. All rights reserved. blue lyme grass 51 ribbon grass 52 miscanthus 53 miscanthus sacchariflorus 54 55 MISCANTHUS M. sinensis M. sacchariflorus Bunch grass Hairs = spikelet Awns on florets Many flower colors Many foliage colors Aug-Oct flowering Invasive rhizomes Hairs 2x spikelet No awns White fluffy flowers Green foliage Aug flowering 56 © 2011 Regents of the University of Minnesota. All rights reserved. red flame miscanthus 57 silver feather miscanthus 58 miscanthus sinensis ‘variegatus’ 59 ‘malpartus’ miscanthus 60 ‘autumn light’ miscanthus 61 ‘zebrinus’ 62 CULTURE AND MAINTENANCE Spring planting Mature height = spacing Divide as necessary Spring cut back Winter protection for group 2 63 © 2011 Regents of the University of Minnesota. All rights reserved. spring cut back 64 burning 65 shop.extension.umn.edu 66 67 68 69 70 71 72 Written by Mary Meyer, Extension horticulturist Discover more at extension.umn.edu © 2011 Regents of the University of Minnesota. All rights reserved. The University of Minnesota is an equal opportunity educator and employer. In accordance with the Americans with Disabilities Act, this PowerPoint is available in alternative formats upon request. Direct requests to the Extension Store at 800-876-8636. 73