How to build planting beds in flood area?

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  • Alan Holloway Alan Holloway on Jun 06, 2017
    If this is an area that stays consistently damp, you could plant a bog garden. There are a number of plants that thrive in very wet conditions. Google or Bing "bog garden plants". You'll find a good selection that will grow in that condition for the planting zone where you are located. If you have your eyes on plants that don't like the wet conditions then your beds most definitely should be raised using pressure treated landscape timbers or, better, using landscape blocks. After you've thoroughly tilled the area, remove about 4" of soil below the lowest point of the surrounding grade and fill the bed with 4" of #57 stone (gravel). Cover with landscaping fabric, lapping the edges a minimum of 12". The fabric will keep the soil you put back into the raised bed from getting down into the drainage layer of gravel and clogging it up. Build up your raised bed about 12" or higher. Here, you should place the same landscaping cloth as on the gravel and lay it up against the inside of the raised bed walls. Lap one side of it over the top of the fabric which is on top of the gravel. Let the top of the cloth lap over the top of the bed wall. Next, fill in the bed with soil. Once you infill with soil, the soil will hold the fabric in place on the inside of the wall. After the soil is in, you can trim off the top of the fabric even with the top of the wall so you can't see it from outside of the bed. Your mulch will cover up any of the cloth above the soil in the raised bed.

  • Nancy Turner Nancy Turner on Jun 06, 2017
    Make sure if the raised garden is going to have edibles in them to make sure the treated lumber you use is safe, some use chemicals that will leech into what you plant.

  • Rachel Rachel on Jun 06, 2017
    thanks for the tips. We have been flooded over this ground about 3 times in 14 years and just didn't know exlactly how to put up raised beds so that they didn't get washed away if we got a really big flood.

  • Janis K Harrison Janis K Harrison on Jun 06, 2017
    Have you considered those rigid kiddie pools with pool noodles zip-tied around the rim so they'll stay upright when they float?