After years of talking about it, I finally have started installing a rain garden! When it rains for any period of time at my house the water from the down spouts runs into my lawn and pools there for an hour or two. The dogs get muddy and the lawn erodes. Its gone down about an inch a year since we’ve moved in, and there’s almost no grass in certain spots because my dogs are constantly running on it. This rain garden is designed to help capture anywhere from 80-95% of the rain water coming off of my patio cover (1/3 of the rain water that’s been going into my lawn) and filter it/ slow it down so that it goes back into the earth instead of running out into the street. Rain gardens take native, water loving plants, and utilize their ability to grow in wet conditions to help reduce water run off and erosion. They tend to be around 100 sq feet, but can be larger or smaller depending on the area you’re working with. Generally the larger they are the better they’ll filter the water out.
Here are some pictures of what I did on the 4th of July yesterday!
I did most of the digging a week or two in advance, but the compost was hauled in yesterday because yesterday was the only day I had off/time to do it. I’ve only hauled in about 3/4 of a yard, but I’ll need another yard and a half before I’m finished. The trench that you see in the middle of the dirt is where water will pool/flow, and the raised edges allow the water level to raise up about 4 inches before it overflows into the lawn. There will be a larger ponding area in the wide side of the garden, and I’ll be hauling a 6 ft mock orange tree over from the other side of the yard. It will provide shade and its larger roots will help filter the water as it soaks deeper into the ground.
Other plants in the garden include several species of fern, iris, strawberries, sedges, bleeding hearts, common camas, lily of the valley, and either an oregon grape or a nine bark.
If you’re interested in learning more about rain gardens I highly advise you look into them! Here’s a link to a local project to increase the number of rain gardens in my watershed!