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Cardboard instead of weed cloth?
+5
buttaflie143
timwardell
Theresa
Patty from Yorktown
lisaphoto
9 posters
Page 1 of 1
Cardboard instead of weed cloth?
I have seen a couple of people on here say they put down cardboard or newspaper instead of the weed cloth. I have a couple of questions:
1)can you do that directly over existing grass
2) Does it have to be one large piece, or can it be multiple pieces overlapping
3) Will this really keep the weeds out for ever?
1)can you do that directly over existing grass
2) Does it have to be one large piece, or can it be multiple pieces overlapping
3) Will this really keep the weeds out for ever?
Re: Cardboard instead of weed cloth?
Hi,
I have used both weed cloth and cardboard/newspaper. All three options work and over time all three options will get weeds. I find the weeds easier to remove from newspaper or cardboard. Yes you can put cardboard and newspaper over grass. It will kill the grass. No it does not need to be a single sheet. I wet a small stack of newspaper and spread it, before I put down mulch. It lasts about two years You can use printed newspaper, just not the glossy stuff. I put the cardboard printed side down. It turns into compost eventually. Hope this helps.
Patty from Yorktown
I have used both weed cloth and cardboard/newspaper. All three options work and over time all three options will get weeds. I find the weeds easier to remove from newspaper or cardboard. Yes you can put cardboard and newspaper over grass. It will kill the grass. No it does not need to be a single sheet. I wet a small stack of newspaper and spread it, before I put down mulch. It lasts about two years You can use printed newspaper, just not the glossy stuff. I put the cardboard printed side down. It turns into compost eventually. Hope this helps.
Patty from Yorktown
Patty from Yorktown- Posts : 350
Join date : 2010-03-05
Location : Yorktown, Virginia
Re: Cardboard instead of weed cloth?
I used several layers of wet newspapers on top of the grass where I put my SFGs. I had my husband take the weed eater and cut the grass very low to the ground before I put the wet newspapers down. I've not had any weeds come up from under the SFG, once in a while one may pop up from a seed that has blown over into the garden.
I did read where someone used a heavy cardboard, and it didn't allow for proper drainage so they had to poke holes into the cardboard for drainage.
I'm sure the weed barrier works well, but just never used it myself.
I did read where someone used a heavy cardboard, and it didn't allow for proper drainage so they had to poke holes into the cardboard for drainage.
I'm sure the weed barrier works well, but just never used it myself.
Theresa
FOUNDER SFG forum 2009
certified SFG instructor-
Posts : 211
Join date : 2010-02-26
Age : 69
Location : Illinois Z6
Re: Cardboard instead of weed cloth?
1) Yes, you can do it directly over the grass. Though, as has already been suggested, it helps to mow it very low first or scalp it with a weedeater, or - even better - do it in late winter or early spring while the grass is still dormant (if it's the dormant type).lisaphoto wrote:I have seen a couple of people on here say they put down cardboard or newspaper instead of the weed cloth. I have a couple of questions:
1)can you do that directly over existing grass
2) Does it have to be one large piece, or can it be multiple pieces overlapping
3) Will this really keep the weeds out for ever?
2) I can be multiple pieces of cardboard and/or newspaper overlapping.
3) Yes, it will keep the weeds out if you put it on thick enough. One or two pages of newspaper won't cut it. By the time the newspaper and/or cardboard rots it will have smothered and killed the grass. The material then becomes compost - as does the now dead weeds & grass.
I'm in Texas and the lawn was sodded with bermuda grass - very invasive stuff. I put down newspaper 20 pages thick then covered that with weed cloth stapled to the inside of my boxes. This was the only option as I've seen bermuda grass send runners up, through, and around weed barriers in the past. By using newspaper in late winter I greatly increased my chances of taking out the grass. It worked and I haven't had any grass or weeds in those beds except what has blown in on the wind.
Re: Cardboard instead of weed cloth?
[quote="Theresa"]
I did read where someone used a heavy cardboard, and it didn't allow for proper drainage so they had to poke holes into the cardboard for drainage. [quote]
Uh oh
...I used cardboard moving boxes (is this considered to be heavy cardboard?). Should I have poked holes in them? How will I know if I am not getting proper drainage?
I did read where someone used a heavy cardboard, and it didn't allow for proper drainage so they had to poke holes into the cardboard for drainage. [quote]
Uh oh

buttaflie143- Posts : 356
Join date : 2011-04-07
Location : Raleigh, NC - EST
Re: Cardboard instead of weed cloth?
Buttaflie, I have never worried about drainage with cardboard or newspaper. It just rots and composts. If it has a plastic or vinyl coating on it, that is a different story. But even waxed cardboard decomposes beautifully. It just takes a bit longer than regular cardboard.
Gwynn
Gwynn
Old Hippie- Regional Hosts
-
Posts : 1156
Join date : 2010-08-12
Age : 72
Location : Canada 3b
Re: Cardboard instead of weed cloth?
buttaflie143 wrote:
Uh oh...I used cardboard moving boxes (is this considered to be heavy cardboard?). Should I have poked holes in them? How will I know if I am not getting proper drainage?
I've used a couple of layers of moving boxes without any drainage problems (in addition to weedblock). I bet you'll be fine.
elliephant-
Posts : 842
Join date : 2010-04-09
Age : 48
Location : southern tip of Texas zone 9
Re: Cardboard instead of weed cloth?
LOL You've really been gravedigging, buttaflie!
Learning to hydrate your MM properly is a matter of experience. Every box set-up is a little different. If you put water in the top and see it coming out the bottom somewhere, that is a good thing. It doesn't mean you've watered properly, it means you have good drainage. Having good drainage means that you don't have to worry about over-watering.
If you feel like you are watering and watering but no water is escaping out the bottom, then your weed barrier (whatever type you're using) has created a dam, or you have very sandy soil.
See if this can fit in with your planting plan: Leave a square empty for a while; water it just like you do your other squares that are planted. Every few days, use that square to reach to the bottom of the box to see how thoroughly you are watering. (The ol' finger test in the top one or two inches of MM doesn't help much.) The bottom shouldn't be soggy.
Learning to hydrate your MM properly is a matter of experience. Every box set-up is a little different. If you put water in the top and see it coming out the bottom somewhere, that is a good thing. It doesn't mean you've watered properly, it means you have good drainage. Having good drainage means that you don't have to worry about over-watering.
If you feel like you are watering and watering but no water is escaping out the bottom, then your weed barrier (whatever type you're using) has created a dam, or you have very sandy soil.
See if this can fit in with your planting plan: Leave a square empty for a while; water it just like you do your other squares that are planted. Every few days, use that square to reach to the bottom of the box to see how thoroughly you are watering. (The ol' finger test in the top one or two inches of MM doesn't help much.) The bottom shouldn't be soggy.
Re: Cardboard instead of weed cloth?
Buttaflie wrote:Uh oh...I used cardboard moving boxes (is this considered to be heavy cardboard?). Should I have poked holes in them? How will I know if I am not getting proper drainage?
If you find that the Mel's Mix is not draining properly, you could always take a philips head screw driver (kind of star shaped pointy screwdriver ) and poke holes through the Mels' Mix then through the cardboard into the dirt underneath your SFG bed. I think you said that you had dug up the weeds from an exisiting bed, then placed your SFG on top of that bed.
Furbalsmom-
Posts : 3141
Join date : 2010-06-10
Age : 76
Location : Coastal Oregon, Zone 9a, Heat Zone 2 :(
Re: Cardboard instead of weed cloth?
Yes, I dug it up and turned the soil over. But I still wanted to make sure the existing soil was weed free so I covered it. Overkill?
buttaflie143- Posts : 356
Join date : 2011-04-07
Location : Raleigh, NC - EST
Re: Cardboard instead of weed cloth?
Not overkill at all. I had such a problem with weeds in my old style amended soil garden, I ended up losing a lot of produce to the weeds because I could not keep up. I would do whatever it takes to keep out the weeds.
Furbalsmom-
Posts : 3141
Join date : 2010-06-10
Age : 76
Location : Coastal Oregon, Zone 9a, Heat Zone 2 :(

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