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Invasive ferns

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DomesticLaura photos
Joined: 5/13/2008
Location: Suburban, Massachusetts
Posts: 77
Posted: May/13/2008 12:56 PM PST

My yard is bordered on 2 sides by woods and wetlands and the ferns are encroaching on my yard. Specifically, they are growing into the azaleas that the previous owner had planted along the edge of the woods. I pulled out as many as I could last spring, but they just keep coming. Is there anything I can do about them? I pretty much assume they'll spread into the shady parts of the lawn where they'll get mown over, but what can I do about them invading the azaleas?
Aurora blog photos
Joined: 4/24/2008
Location: Chesapeake VA
Posts: 1954
Posted: May/13/2008 2:31 PM PST

Pretty much you'll have to keep pulling them up- getting as much of the roots as possible. Try edging the Azalea bed on the side of the woods pretty deep- that should help keep the fern runners from encroaching.
Unless you don't mind using an herbicide. I don't know how well that will work since I don't use herbicides.
fozbot3 blog photos
Joined: 1/18/2005
Location: Michigan
Posts: 7891
Posted: May/17/2008 12:34 PM PST

i've got the same problem with a small bed of ferns i've had for years. about two years ago they started working their way out into my lawn. the darn things are impossible to dig up completely and i know they'll just do it again. i've got a bottle of Ortho Season Long Weed and Grass Killer that i use on the cracks in my sidewalk. i'm considering giving these ferns a little squirt of the stuff and see if that discourages them from leaving their boundries. i'll let you know how well it works. i'm assuming i'll lose some grass in the process but i'm willing to take that chance.
ga_girl photos
Joined: 8/02/2008
Location: Georgia
Posts: 494
Posted: Aug/02/2008 12:02 PM PST

I suspect what you have are Ostrich ferns which can be very aggressive in the northern areas of the US (it's too hot for them down here in Georgia and they don't do well unless the area is wet).

If it is Ostrich fern, it is the fern prized for tender fiddleheads in the spring which people like to eat. You could offer to give them away or trade them; just dig them up and wrap them in damp newspaper for shipping.
TeskePetAndGarden
Joined: 8/23/2009
Location: Moline
Posts: 16
Posted: Aug/23/2009 10:51 AM PST

I agree with the Georgia Peach. It sounds like Ostrich Ferns. Those guys eat Round Up for breakfast. They are one tough customer. Try getting rid of what you can with Glysophate (Round Up or Kilz All) using two applications four or five days apart. Or pull what you can. Then cover the area with heavy landscape plastic and top with mulch. You may still get a few poking through the plastic years later. Good luck. Gemma
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