Chicago Area Rain Gardens?

DLM2000May 13, 2010

Has anyone planted a rain garden and if so, what plants have you used successfully? I have a low spot in my yard that holds water in the spring with the snow melt and after heavy rain - like now!!! - but will dry out in the summer. Obviously I can water in dry weather for plants that need moisture but there's no way to drain the area so need plants that prefer, or at least don't mind having wet feet at times.

Ideally there would be taller shrubs or small trees in the back and coming forward to tall perennials then smaller ones. Color preference is white, pink, blue since that's the basis of 90% of my gardens but I don't know if that's going to be possible here. I have astilbe in a few locations and know they like moisture but can they tolerate the wet feet?

I'd appreciate any plant suggestions for this wet, typical Chicago clay soil part of my yard.

Thanks -

Deb

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artdeco

I currently have Pumilla Dogwood, Itea, Witchhazel, Birch, Black Walnut, Ninebark and a native blue Iris, maybe virginia?.
I tried Aronia & a variegated dogwood, but a local critter kept chewing them down to a stub so I moved them into our fenced yard.
Also tried Pussy Willow but it died. I had it in a spot that alternates between flooded & bone-dry, and at the drip-line of a Black Walnut tree - not sure why it died.
Tried acorus/Sweet Flag, but it got so huge very fast, and didn't bloom so I removed it.

If you fertilize your lawn, try very hard not to get the fertilizer anywhere near standing water - the nitrogen will cause algae bloom, and you'll have green water & rocks which the birds & ducks will avoid. (I've got maybe 4 sq. ft area that rarely drains completely, and there's 2 ducks that both squeeze themselves into the water, so we call this 'ditch' the 'duck pond'.) Later in the summer when it dries out, everything will then be covered w/ dead algae brown crust.

And if you see a cattail growing, don't say "Oh cool! It's a cattail!" - Remove it immediately or you'll be sorry... like I was.

Hope this helps! Good luck!

    Bookmark   May 15, 2010 at 2:46AM
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motria(z6 Chicago)

I put a grey birch and american hazelnut in my raingarden. Both are native to the Midwest and can tolerate wet and variable conditions. You might just Google "rain garden" and "plant list" to see what you find - I found some links from Wisconsin DNR and there are other Midwest community projects going up all the time. Good luck!

    Bookmark   May 15, 2010 at 10:07PM
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DLM2000

Thanks for all those suggestions. I have googled but wanted personal experience - like the tip about the cattails! The Ninebark surprises me - they can tolerate standing water? The water isn't standing long enough to grow algae (unless we keep getting these torrential rains). It lasts a day or so, maybe puddles longer in a few spots but largely drains in 24 - 48 hours as long as the ground is thawed. A garden center last year suggested Japanese anemone so I bought several and planted them about mid summer when we generally don't have standing water anymore - they did well then, but not one came back - expensive and aggravating.

    Bookmark   May 17, 2010 at 5:32PM
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artdeco

The Ninebark isn't in a low spot. It's up higher on a slope where it gets flooded maybe 2 - 3 times a year. Otherwise it's dry cuz rain water just runs off. This is the 2nd summer it's been in this spot, and had it's roots submerged 2 times, for no longer than 6 hours.
Alot of this area looks bone-dry most of the summer. There's alot of clay, and the top layer gets cracked & dead-looking, but when I dig down past 8" I find very moist clay.

    Bookmark   May 20, 2010 at 12:21AM
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