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Richard G. Hawke

Richard Hawke
Plant Evaluation Manager
Associate Scientist
E-mail: 
Phone: 
(847) 835-8251
Curriculum Vitae: 
Research Interests: 
  • Ornamental plant evaluation
  • Invasive species testing of wild-collected and ornamental plants
  • Evaluation of native and cultivated plants for green roofs

My main research is the comparative evaluation of ornamental plants, predominantly herbaceous perennials, to determine the best garden plants for the Upper Midwest and areas with similar climatic conditions. The herbaceous plants under evaluation are grown outdoors in side-by-side trials for a minimum of four years; vines and shrubs are evaluated for a minimum of six years. Plants are monitored regularly to assess their ornamental traits; cultural adaptability to the soil and environmental conditions of the test site; disease and pest problems; and winter injury.

Among the 20 comparative genera currently in trials are Andropogon (bluestem), Asclepias (milkweed), Baptisia (false indigo), Chrysanthemum (hardy mum), Coreopsis (tickseed), Filipendula (meadow sweet), Hamamelis (witch hazel), Heliopsis (heliopsis), Hibiscus (rose mallow), Hydrangea paniculata (panicle hydrangea), Hydrangea serrata (Japanese hydrangea), Lespedeza (bush clover), Molinia (purple moor grass), Perovskia (Russian sage), Persicaria (smartweed), Potentilla (perennial cinquefoil), Rosa (English shrub roses), Salvia (hardy and non-hardy sage), Schizachyrium (little bluestem) and Weigela.

 

Plant Evaluation Program

Plant Evaluation Notes podcast

Selected Publications: 

2016. Coreopsis You Can Count On! Fine Gardening,September/October, No. 171: 44-51.

2016. The Best of the Best Hostas: Most Beautiful Blue Variety. Fine Gardening,September/October, No. 171: 31.

2016. Woodland Wonders. Nursery Management,May.

2016. Salvias That Won’t Let You Down. Fine Gardening,May/June, No. 169: 36-43.

2015. A Comparative Study of Lady Ferns and Japanese Painted Ferns (Athyrium spp.), Plant Evaluation Notes, Issue 39.

2015. An Evaluation Study of Plants for Use on Green Roofs. Perennials Plants, Fall, pp. 29-62.

2015. Awesome Asters. Fine Gardening, September/October, No. 165: 30-37.

2015. Beyond the Basic Butterfly Bush. Fine Gardening,July/August, No. 164: 30-36.

2015. Up on the Roof, American Nurseryman, July, pp. 10-15.

2015. An Evaluation Study of Plants for Use on Green Roofs, Plant Evaluation Notes, Issue 38.

2015. Kick Off the Season With This Shady Star. Fine Gardening,March/April, No. 162: 50-55.

2014 A Comparative Study of Joe Pye Weeds (Eutrochium spp.) and Their Relatives. Perennials Plants, Summer, pp. 48-63.

2014. Garden Phlox That Don’t Disappoint. Fine Gardening,July/August, No. 158: 28-35.

2014. Campanulas You Can’t Live Without. Fine Gardening,May/June, No. 157: 30-37.

2014. A Comparative Study of Cultivated Asters. Perennials Plants, Winter, pp. 14-39.

2014. Shared Wisdom: 8 Perennial Picks from a Pro. Garden Gate, February, No. 115: 8-11

2014. A Comparative Study of Joe Pye Weeds (Eutrochium spp.) and Their Relatives, Plant Evaluation Notes, Issue 37.

2013. Fabulous Phlox. Greenhouse Management, November, 33(2):44-47.

2013. Battle of the grasses. Fine Gardening,November/December, No. 154: 48-55.

2013. A Study of Phlox paniculata Cultivars. Perennial Plants, Autumn, pp. 16-41.

2013. Catmint. Fine Gardening,August, No. 152: 56-62.

2013. Which Ligularia will make your shade shine? Fine Gardening,March/April, No. 150: 44-49.

2013. A Comparative Study of Cultivated Asters, Plant Evaluation Notes, Issue 36.

2012. Big Blooming Clematis, Fine Gardening,August, No. 146: 44-51.

2012. Geraniums, The best of the best, Fine Gardening,June, No. 145: 38-45.

2012. Phlox paniculata, Nursery Management, 28(1):67-69.

2012. If you’re not growing Geums, you’re missing out, Fine Gardening,April, No. 144: 46-51.

2011. A Comparative Study of Phlox paniculata Cultivars, Plant Evaluation Notes, Issue 35.

2011. Hydrangeas, Fine Gardening, September/October, No. 141: 32-37.

2011. Bugbanes for American Gardens, The American Gardener 90 (4):26-31.

2011. Meadow Rues, Fine Gardening, May/June, No. 139: 30-35.

2011. Tradescantia, Nursery Management, 27(2):66-71.

2010. A Comparative Study of Tradescantia Cultivars, Perennial Plants, Autumn, pp. 53-62.

2010. Veronica spp., Nursery Management, 26(11):50-54.

2010. A Comparative Study of Tradescantia Cultivars, Plant Evaluation Notes, Issue 34.

2010. Sizing up Stonecrops, The American Gardener 89(5):18-23.

2010. Stachys spp., NMPro, July, Vol. 26, No. 7, p. 10.

2010. Comparative Studies of Veronica and Veronicastrum, Perennial Plants, Spring, pp. 6-22.

2010. American Beauties: Baptisias, The American Gardener 89(2):24-29.

2010. Comparative Studies of Veronica and Veronicastrum, Plant Evaluation Notes, Issue 33.

2009. A Comparative Study of Platycodon grandiflorus Cultivars, Perennial Plants, Fall, pp. 36-42.

2009. A Heavy-blooming Clematis, Fine Gardening, December, No. 130, p. 23

2009. Platycodon grandiflorus is a good companion to other summer-blooming perennials. NMPro, August, pp. 53-57.

2009. A Comparative Study of Platycodon grandiflorus Cultivars, Plant Evaluation Notes, No. 32.

2009. A Performance Appraisal of Hardy Bellflowers, Perennial Plants, Winter, pp. 11-23.

2008. A Performance Appraisal of Hardy Bellflowers, Plant Evaluation Notes, No. 31.

2008. Bold Rodgersias. Chicagoland Gardening, November/December, pp.12-13.

2008. Trial Rates Shasta Daisy Cultivars. NMPro, May 2008, pp. 34-38.

2008. 20 Great Plants Worth Knowing and Growing. Quarterly Northwest, Vol. 1, No. 2, pp. 54-57 and p. 123.

2008. Carefree Cranesbills. The American Gardener, May/June, Vol. 87, No. 3, pp. 16-21.

2008. Flowering Perennials for Sun, Midwest Regional Report, Fine Gardening, May/June, No. 121, p. 62.

2008. A Report on Leucanthemum ×superbum and Related Daisies, Perennial Plants, Winter, pp. 7-22.

2007. A Report on Leucanthemum ×superbum and Related Daisies, Plant Evaluation Notes, No. 30.

2007: Versatile Switch Grass. Chicagoland Gardening, November/December 2007, pp.10-11.

2007. Trial Rates Catmint Cultivars. Nursery Management & Production, November, pp.42-46.

2007 Bugbanes: Made for Shade. Chicagoland Gardening, September/October 2007, pp.16-17.

2007. Thalictrum: a study of Meadow Rue. Perennial Plants, Spring, pp. 9-21.

2007. Lofty Balloon Flower. Chicagoland Gardening, July/August, pp.16-17.

2007. A Comparative Study of Cultivated Catmints. Plant Evaluation Notes, No. 29.

2007. Geranium macrorrhizum (Bigroot Geranium). Horticulture, Vol. 104, No. 4, p. A8.

2007. Comparative Evaluation of Commercially Available Tradescantia Cultivars. Perennial Plants, Winter, pp. 17-25.

2007. Spiky Speedwells. Chicagoland Gardening, May/June, pp.24-25.

2007. Lady’s Mantles are the Perfect Foil. Chicagoland Gardening, March/April, pp.16-17.

2007. An Evaluation Report of Meadow Rues for Full-SunGardens. Plant Evaluation Notes, No. 28.

2007. A Tale of Two Vines. Chicagoland Gardening, January/February, p. 11.

2006. Hardy Euphorbias. Chicagoland Gardening, November/December, p. 9.

2006. Autumn’s Asters. Chicagoland Gardening, September/October, p. 15.

2006. Shasta Daisies Brighten MidsummerGardens. Chicagoland Gardening, July/August, p. 16-17.

2006. A Kindle of Catmints. Chicagoland Gardening, May/June, p. 17-18.

2006. ‘Gold Heart’ Bleeding Heart. Horticulture, May, Volume 103, Number 4, p. A3.

2006. Evaluation of Stachys. Perennial Plants, Number 2, pp. 54-62.

2006. Extolling the Virtues of Bellflowers. Chicagoland Gardening, March/April, p. 18-19.

2006. Proven Perennials. Chicagoland Gardening, January/February, p. 10.

2005. A Comparative Study of Cultivated Stachys. Plant Evaluation Notes, No. 27.

2005. Proven Perennials. Chicagoland Gardening, January/February, p. 10.

2005. A Garden Study of Sundrops and Evening Primroses. Perennial Plants, Number 3, pp. 47-57.

2005. The Glow of Winterberry. Chicagoland Gardening, November/December, pp. 10-11.

2005. Sundrops and Evening Primroses. Chicagoland Gardening, September/October, pp. 18-19.

2005. Capable Coreopsis. Chicagoland Gardening, July/August, pp. 20-21.

2005. Evaluation of Alchemilla mollis: Perennial Plants, Number 2, pp. 32-38.

2005. Herbaceous Clematis. Chicagoland Gardening, May/June, pp.

2005. Saruma henryi: A fetching woodland perennial. Fine Gardening, May/June, No. 103, p. 18.

2005. A Look at Lady’s-mantles. Nursery Management & Production, Vol. 21, No. 1, pp.84-86.

2005. A Wealth of Meadow Rues. Chicagoland Gardening, March/April, pp. 20-21.

2005. Hot Perennials. American Nurseryman, February 15, Issue 4, Volume 201, pp. 34-39.

2005. Clematis ‘Evisix’: a noteworthy nonvining clematis. Fine Gardening, January-February, p. 24.

2005. Lamium Earns Its Stripes. Chicagoland Gardening, January/February, p. 10.

2005. A Garden Study of Sundrops and Evening Primrose. Plant Evaluation Notes, No. 26.

2004. Hardy Geraniums for Northern Gardens. Perennial Plants, Fall, pp. 7-34.

2004. An Evaluation Study of Alchemilla. Plant Evaluation Notes, No. 24.

2004. Summersweet Clethra. Chicagoland Gardening, November/December, pp. 14-15.

2004. Plant Evaluations at the ChicagoBotanic Garden. Proceedings of the 2002 Perennial Plant       Association Symposium, pp. 25-26.

2004. Leucanthemum ´superbum ‘Becky’: 2003 Perennial Plant of the Year. Proceedings of the 2002 Perennial Plant Association Symposium, pp. 27-28.

2004. Fall-blooming Anemones. Chicagoland Gardening, September/October, pp. 14-15.

2004. Hardy Geraniums for Northern Gardens. Plant Evaluation Notes, No. 22.

2004. Blazing Stars Brighten the MidsummerGarden. Chicagoland Gardening, July/August, p. 13.

2004. Echinacea tennesseensis. Field Notes. American Nurseryman, June 1, Issue 11, Volume 199, p. 86.

2004. Hardy Geraniums. Chicagoland Gardening, May/June, p. 20.

2004. An Evaluation Study of Coral Bells. Perennial Plants, Spring, pp. 20-32.

2004. False Indigos Test True in Perennial Beds. Chicagoland Gardening, March/April, p. 14.

2004. Garden-Worthy Artemisias. Chicagoland Gardening, January/February, p. 12.

2003. An Evaluation Study of Coral Bells. Plant Evaluation Notes, No. 21.

2003. Lamb’s Ears and Betonies (Stachys). Chicagoland Gardening, November/December, pp. 14-15.

2003. Hardy Sages. Chicagoland Gardening, September/October, pp. 14-15.

2003. Garden-Worthy Artemisias. Perennial Plants, Spring, pp.7-19.

2003. Monarda for the SummerGarden. Chicagoland Gardening, July/August, p. 16.

2003. What Color is Your Yarrow? Chicagoland Gardening, May/June, p. 20.

2003. Garden-worthy Artemisias. Plant Evaluation Notes, No. 19.

2003. Colorful Coral Bells. Chicagoland Gardening, March/April, p. 14.

2003. Spring-blooming Barrenworts for the ShadeGarden. Chicagoland Gardening, Jan/Feb, p. 27.

2002. Blue Star Shines in Trials in the Midwest. The American Gardener, Vol. 81, No. 5, p. 14.

2002. An Appraisal of Pulmonaria for the Garden, Part 2. Pulmonaria Newsletter, November, pp. 12-14.

2002. Plant Evaluations at the ChicagoBotanic Garden. Perennial Plants, Autumn, pp. 11-14.

2002. Boxwoods for Northern Gardens. Chicagoland Gardening, November/December, p. 12.

2002. Hardy Amsonia. Perennial Plants, Summer, pp. 29-41.

2002. Pulmonaria. Perennial Plants, Spring, pp. 33-42.

2002. Coneflowers: Anything but Ordinary. Chicagoland Gardening, September/October, p. 12.

2002. A Flock of Phlox for the Garden. Chicagoland Gardening, July/August, p. 13.

2002. Clematis for Northern Gardens. Chicagoland Gardening, May/June, p. 36.

2002. An Appraisal of Pulmonaria for the Garden, Part 1. Pulmonaria Newsletter, March, pp. 9-15.

2002. Bluestars for Northern Gardens. Chicagoland Gardening, March/April, p. 41.

2002. An Evaluation Study of Hardy Amsonia. Plant Evaluation Notes, Issue 18.

2002. Garden-worthy Pulmonarias. Chicagoland Gardening, January/February, p. 11.

2001. An Appraisal of Pulmonaria for the Garden. Plant Evaluation Notes, Issue 17.

2001. Addressing Powdery Mildew on Phlox. Fine Gardening, November-December, pp. 80-81.

2001. Autumn-blooming Toad Lilies. Chicagoland Gardening, November/December, p. 11.

2001. Bay Laurel. Garden Talk, Vol. 16, No. 6, p. 2.

2001. An Evaluation Study of Tricyrtis. Plant Evaluation Notes, Issue 16.

2001. Tops in Toad Lilies. NMPro, September, pp. 51-54.

2001. Goldenrods. The Gardener, Vol. 1, No. 3, p. 7.

2001. Great Goldenrods for the Garden. Chicagoland Gardening, September/October, p. 35.

2001. Which Goldenrods Rule. NMPro, August, pp. 59-63.

2001. ChicagoBotanic Garden Evaluates Goldenrod. Plant Propagator, Vol. 13, No. 2, pp11-12.

2001. An Evaluation Report of Goldenrods for the Garden. Perennial Plants, Spring, pp. 11-24.

2001. Grading Goldenrods. The American Gardener, Vol. 80, No. 2, p. 13.

2001. ChicagoBotanic Garden Identifies Hardy Goldenrod. American Nurseryman, Vol. 193, pp. 12.

2000. Breeding and Evaluation of Perennials at ChicagoBotanic Garden. Combined Proceedings International Plant Propagators’ Society, Vol. 50.

2000. An Evaluation Report of Goldenrods for the Garden. Plant Evaluation Notes, Issue 15.

2000. A Performance Appraisal of Hardy Sages. Plant Evaluation Notes, Issue 14.

1999. An Evaluation Report of Selected Phlox Species and Hybrids. Plant Evaluation Notes, Issue 13.

1999. Clematis: The Queen of Vines. Flowering Vines. BrooklynBotanic Garden Gardening Series.

1998. Monarda and Powdery Mildew Resistance. Plant Evaluation Notes, Issue 12.

1997. An Evaluation Report of Shrub Roses. Plant Evaluation Notes, Issue 11.

1997. Clematis for Northern Gardens. Plant Evaluation Notes, Issue 10.

1997. Climbing to the Top. American Nurseryman. Volume 186, Issue 7, pp. 44-67.

1997. Pullman Evaluation Garden symbolizes history. Garden Talk. Volume 12, Number 6, p. 6.

1996. A Performance report of Cultivated Blazing Stars. Plant Evaluation Notes, Issue 9.

1995. Rudbeckia for Cultivated Landscapes. Plant Evaluation Notes, Issue 8.

1994. Boxwoods for Northern Midwest Landscapes. Plant Evaluation Notes, Issue 6.

1994. A Performance Report of Cultivated Yarrows (Achillea). Plant Evaluation Notes, Issue 5.

1994. Annual Vines. Hybrid. Volume 23, Number 2, p. 4.

1993. Hibiscus moscheutos Cultivars and Horticultural Hybrids. Plant Evaluation Notes, Issue 4.

1992. A Bamboo Performance Report. Plant Evaluation Notes, Issue 3.

1991. The Evaluation/Introduction of a Unique DwarfRiver Birch. Plant Evaluation Notes, Issue 2.

1991. Performance Appraisal of Selected Small-leaved Rhododendrons. Plant Evaluation Notes, Issue 1.