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Minnesota Nursery and Landscape Association (MNLA) Foundation
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2. PLANT MATERIALS LESSON 13
Herbaceous plants

3. Herbaceous Perennials
Perennials – Herbaceous plants that persist for more than two years and usually for many growing seasons, and typically flower and set seed each year; the top portion of the plant dies back each winter and regrows the following spring from the same root system.
Herbaceous Perennials
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4. Black-Eyed Susans & Cone Flowers – Rudbeckia spp.
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5. Chrysanthemum/Mums – Chrysanthemum morifolium
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6. Daylilies – Hermerocallis spp.
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7. Coral Bells – Heuchera spp.
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8. Plantain Lilies/Hosta – Hosta spp.
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9. Stonecrops/Sedum – Hylotelephium spp.
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Irises – Iris spp.
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11. Gayfeathers/Blazing Star – Liatris spp.
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Peonies – Paeonia spp.
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Annuals - Plants that perform their entire life cycle from seed to flower to seed within a single growing season. All roots, stems and leaves of the plant die annually.
Annuals
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14. Snapdragon – Antirrhinum majus
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Begonias –Begonia spp.
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16. Geranium – Pelargoniun x hortorum
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17. Petunia – Petunia x hybrida
Photo courtesy of Plant Finder
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18. Coleus – Plectranthus scutellarioides
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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Marigold – Tagetes spp.
Photo courtesy of Plant Finder
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20. Pansy – Viola x wittrockiana
Photo courtesy Dr. James Calkins
Photo courtesy Dr. James Calkins
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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Hardy bulbs – Herbaceous Perennials that produce underground food storage and nesting structures (“Bulbs”) for future growth after a dormant period (winter in Minnesota); they require a period of cold in order to resume growth and bloom; hardy bulbs are planted in the fall and bloom in spring or summer. You can force hardy bulbs to bloom most any time by chilling them for 2-4 months, which fools them into thinking they’ve experienced a winter.
Hardy Bulbs
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Crocuses – Crocus spp.
Photo courtesy of MNLA
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23. Hyacinth – Hyacinthus orientalis
Photo courtesy of MNLA Library
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24. Garden Lilies – Lilium spp.
Photo courtesy of MNLA
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25. Daffodils – Narcissus spp.
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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Tulips – Tulipa spp.
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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Tender bulbs - Herbaceous Perennials that produce underground food storage and resting structures (Bulbs”) for future growth after a dormant period (a dry season); tender bulbs are not cold hardy in Minnesota and must be dug up and stored indoors for the winter; Tender bulbs are usually planted in the spring after danger to frost to bloom in summer or fall; They can be given a head start by potting them indoors in early spring.
Tender Bulbs
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Dahlias – Dahlia spp.
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29. Tuberous Begonia – Begonia x tuberhybrida
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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30. Canna – Canna x generalis
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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Landscape grasses – Herbaceous plants in the grass family that are grown in designers landscapes; Landscape grasses may be annual or herbaceous perennials and include turf (lawn) grasses like Kentucky Bluegrass and showier grasses that are used in gardens and landscape beds where they are valued for their easy care, dramatic appearance and the wide variety of colors, textures, and sizes available.
Landscape Grasses
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32. Big Bluestem – Andropogon gerardii
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33. Feather Reed Grass – Calamagrostis x acutiflora
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34. Prairie Dropseed – Sporobolus heterolepis
Photo courtesy of
Photos courtesy of University of Minnesota Extension Plant Elements of Design Database
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35. Switchgrass – Panicum virginicum
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36. Little Bluestem – Schizachyrium scoparium
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Herbaceous Vines - Herbaceous plants with weak, non-woody stems and strong apical dominance; as a result of their weak stems, vines ramble over the ground or have the ability to climb a support; herbaceous vines may be annuals, tender perennials, or cold hardy perennials.
Herbaceous Vines
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38. Morning Glories - Ipomoea spp.
Photo courtesy of MNLA
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39. Hyacinth Bean – Lablab purpureaus
Photo courtesy
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40. Black-Eyed Susan Vine – Thunbergia alata
Photo courtesy of University of Minnesota Extension Plant Elements of Design Database
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41. Connect with horticulture and landscaping resources.
Thank you for using the Pathways through Horticulture Curriculum, provided to Minnesota teachers free-of-charge, courtesy of the Minnesota Nursery & Landscape Association and the MNLA Foundation.
For more information or to inquire about other resources offered by the MNLA Foundation, please contact:
MNLA Foundation
Office:
Connect with horticulture and landscaping resources.
Your resource for careers in the green industry.  
These lessons were obtained through a purchase agreement between the Minnesota Nursery and Landscape Association (MNLA) and the Pennsylvania Landscape and Nursery Association (PLNA) and have been modified by the MNLA. The Pennsylvania Landscape and Nursery Association retains all original ownership rights and all copyrights. © 2005, Pennsylvania Landscape and Nursery Association. All Rights Reserved.
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