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  • Planting to Control Slope Erosion
  • Planting to Control Slope Erosion
    From "Grounds for Improvement"
    episode DGFI-210


    The reconstruction of Sybille and Scott Fleming's eroding hillside is starting to take shape. The hillside has been partially cleared and the large rock groupings are in place to redirect the flow of rainwater (figure A). And to accent the new look, Sybille has started work on the decorative 6"x6" posts that will stand in the garden, with hand-lettered German greetings (figure B). Now it's time to begin planting.
    Photo

    Figure A

    Photo

    Figure B


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    Dean has found one plant on the property that will have a new life on the freshly placed boulders (figure C). Premoistened moss, which already exists in small amounts on some of the boulders, is broken up in small pieces and placed in moistened crevices of the rocks after first placing a small amount of dirt in each crevice (figure D). In direct sun, the rocks could not sustain the moss, but these rocks are in shade, making it possible for the moss to grow and spread over larger portions of the rock surface, creating a look that is natural and timeless.
    Photo

    Figure C

    Photo

    Figure D


    Plants are next spotted over the slope, ensuring proper placement before planting. Chrysanthemums, which provide annual color, and crape myrtles, which bloom in the summer and are available in a variety of colors, are planted at the top of the driveway. Crape myrtles are easy to maintain and bloom on new wood, so they should be pruned as needed in early spring.

    Ground cover and daylilies, which have a fibrous root system, will also help prevent soil from sliding down the slope. Both are low-maintenance perennials and should be cut back at the end of the season when they begin to turn brown. Adding texture to the landscape are ornamental grasses, which should be cut back at ground level at the end of April or May. Scotch broom and "Mop" Chamaecyparis pisifera add height and color between the steps and the large boulders. All plants are planted just to the soil line of the flowerpot, since a 2" layer of mulch will be added as a finishing touch. Fertilizer is added to each planting site before the plants go in the ground (figure E). The existing roses are pruned to remove broken, dead or diseased canes, and bothersome branches are pruned back to a bud or stem to avoid leaving pruning marks (figure F).
    Photo

    Figure E

    Photo

    Figure F



    RESOURCES :

    Black and Decker tools
    Website: www.blackanddecker.com
    Black & Decker, Inc. (Corporate)
    Website: www.bdk.com/main_bd.htm

    Porter-Cable Tools
    Porter-Cable Corporation
    Website: www.deltaportercable.com

    Irwin Industrial Tool Company
    Website: www.irwin.com

    Ames True Temper Tools
    Ames-True Temper
    Website: www.ames-truetemper.com

    American Society of Landscape Architects

    Delta Tools
    Deltak Power Tools
    Website: www.deltamachinery.com

    Plants provided by Hancock Horticultural Services
    Hancock Horticultural Services Inc.
    Phone: 865-933-3200

    Garden gnomes
    Kimmel Gnomes
    Website: www.kimmelgnomes.com

  • ALSO IN THIS EPISODE: