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Patio interlock and moss between stones - what to do

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  • Jun 29th, 2011 7:04 pm
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Deal Addict
Apr 2, 2007
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Patio interlock and moss between stones - what to do

So what do people do with moss between patio stones?

Do you leave it, spray with wipeout or what.
15 replies
Deal Guru
Dec 31, 2005
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GTT1 wrote:
Jun 27th, 2011 8:17 pm
So what do people do with moss between patio stones?

Do you leave it, spray with wipeout or what.

Nothing. It adds character.
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Sep 7, 2007
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I use moss out. Works good.

I also heard the cheap Tide laundry soap works as well. Just sprinkle it on and wet it a bit and let it sit overnight and then wash it away.
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nalababe wrote:
Jun 27th, 2011 8:59 pm
Nothing. It adds character.

Thats what the wife says but can it become a major problem?
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GTT1 wrote:
Jun 28th, 2011 2:24 pm
Thats what the wife says but can it become a major problem?

What problem?
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Oct 12, 2007
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I'm in the process of killing our moss and will remove it, blast out the sand, and replace it with a good polymeric sand - only way to keep it from coming back.
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nalababe wrote:
Jun 28th, 2011 5:30 pm
What problem?

Don't know thats why I am asking!!

Why is the Captain getting rid of his. I cannot perceive of any problem other than becoming unsightly if it gets outside of the joints.
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CaptSmethwick wrote:
Jun 28th, 2011 6:43 pm
I'm in the process of killing our moss and will remove it, blast out the sand, and replace it with a good polymeric sand - only way to keep it from coming back.

What will good polymeric sand have to do with it? Does it have an active ingredient that kills or prevents moss from growing.

We did our patio last May and used Techniseal RG+ Polymeric Jointing Sand. Patio gets filtered sunlight until 4 p.m. I thought Techniseal was one of the better polymeric sands. Techniseals spec sheet says it inhibits weed growth, to me that is like saying stuff is going to grow. Eliminates would be a word to count on and moss and weeds are probably not considered the same.

I am inclined to believe moss will grow anywhere it has optimum conditions. Heck it grows on fairly smooth granite rocks in cottage country.

My guess is it may be controlled with chemicals but not eliminated. I will live with it or use a killing agent but certainly not going to blast out the existing sand and replace it because I am sure it will come back.
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GTT1 wrote:
Jun 28th, 2011 7:51 pm
What will good polymeric sand have to do with it? Does it have an active ingredient that kills or prevents moss from growing.

We did our patio last May and used Techniseal RG+ Polymeric Jointing Sand. Patio gets filtered sunlight until 4 p.m. I thought Techniseal was one of the better polymeric sands. Techniseals spec sheet says it inhibits weed growth, to me that is like saying stuff is going to grow. Eliminates would be a word to count on and moss and weeds are probably not considered the same.

I am inclined to believe moss will grow anywhere it has optimum conditions. Heck it grows on fairly smooth granite rocks in cottage country.

My guess is it may be controlled with chemicals but not eliminated. I will live with it or use a killing agent but certainly not going to blast out the existing sand and replace it because I am sure it will come back.

If you like moss between stones, then go for it. When it comes to bare footing on the patio around the pool, I don't like the feel of moss and I particularly don't like how it retains moisture (like dew). I also don't like the look in that application (am okay with it in other settings). Therefore, I want it gone around our pool. Keep in mind that moss requires moisture and a growing medium - IOW, like virtually any plant. A good polymeric does not provide a growing medium and moss just will not grow until the polymeric has failed. Once upon a time, that would take 1-2 years but nowadays a good polymeric should last at least 5 years - during that time, moss absolutely should not grow.
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Mar 6, 2007
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CaptSmethwick wrote:
Jun 28th, 2011 8:41 pm
If you like moss between stones, then go for it. When it comes to bare footing on the patio around the pool, I don't like the feel of moss and I particularly don't like how it retains moisture (like dew). I also don't like the look in that application (am okay with it in other settings). Therefore, I want it gone around our pool. Keep in mind that moss requires moisture and a growing medium - IOW, like virtually any plant. A good polymeric does not provide a growing medium and moss just will not grow until the polymeric has failed. Once upon a time, that would take 1-2 years but nowadays a good polymeric should last at least 5 years - during that time, moss absolutely should not grow.

ok. I don't know how you can make the assertion that moss won't grow - they just need a firm surface and tightly locked sand seems like a good enough surface to me. Oh, and they break down the rock below them to sustain themselves. So I guess the sand won't have much nutrients (just silica), but once other things (dust?) gets trapped in the sand, they will have something to feed on and grow!
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PhuFighter wrote:
Jun 28th, 2011 9:14 pm
ok. I don't know how you can make the assertion that moss won't grow - they just need a firm surface and tightly locked sand seems like a good enough surface to me. Oh, and they break down the rock below them to sustain themselves. So I guess the sand won't have much nutrients (just silica), but once other things (dust?) gets trapped in the sand, they will have something to feed on and grow!

I would recommend that you read up on what polymeric sand is. I'm sure there are conditions where moss will grow on a well-drained, well-lit polymeric sand joint but I have yet to encounter them.

Also, I found your reference to moss as "they" to be interesting and even a tad anthropomorphic...
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CaptSmethwick wrote:
Jun 29th, 2011 6:50 am
I would recommend that you read up on what polymeric sand is. I'm sure there are conditions where moss will grow on a well-drained, well-lit polymeric sand joint but I have yet to encounter them.

Also, I found your reference to moss as "they" to be interesting and even a tad anthropomorphic...

Polymeric sand as in the tough angular sand that "locks"? A relative has used it and has fuzzy green growth that appears to be some sort of moss: it's only in the area that is permanently shaded by a privacy fence and not the rest of the patio. There is also moss growing on the grass adjacent to the patio stones as well. The area gets wet and doesn't try out.

As for anthropomorphic? From dictionary.com:
they
   /ðeɪ/ Show Spelled[they] Show IPA
–plural pronoun, possessive their or theirs, objective them.
1.
nominative plural of he, she, and it.
it
1   /ɪt/ Show Spelled [it] Show IPA pronoun, nominative it, possessive its or (Obsolete or Dialect) it, objective it; plural nominative they, possessive their or theirs, objective them; noun
–pronoun
1.
(used to represent an inanimate thing understood, previously mentioned, about to be mentioned, or present in the immediate context): It has whitewall tires and red upholstery. you can't tell a book by its cover.

Seems correct usage to me.
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Mar 23, 2009
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Moss between interlock looks great. In fact, I'm trying hard to protect my moss and encourage it too grow, but on my driveway it's too sunny and dry. So instead, I get ugly weeds. :(

Unfortunately, those weeds also grow in the polymeric sand, although nowhere near as well as in soil. Moss doesn't seem to like that polymeric sand at all though.
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Interesting comments. Thanks all

I guess I will just leave it be.

Should have done a poll,

1-Who likes it
2-Who wants it gone
3-Couldn't care less
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PhuFighter wrote:
Jun 29th, 2011 8:17 am
Polymeric sand as in the tough angular sand that "locks"? A relative has used it and has fuzzy green growth that appears to be some sort of moss: it's only in the area that is permanently shaded by a privacy fence and not the rest of the patio. There is also moss growing on the grass adjacent to the patio stones as well. The area gets wet and doesn't try out.

As for anthropomorphic? From dictionary.com:Seems correct usage to me.

Your experience with polymeric is rather narrow - the newer and better versions are tough and very grout-like. Trust me, moss will only grow on that stuff if it's constantly in the shade and frequenly wet - and even then it won't have a good hold because there'll be no real crevice for it to root into. Heck, I live in the forest and am absolutely surrounded by moss, lichen, etc. and the only moss I get between patio stones is where there's true sand. Where I've used the most recent polymeric formulations, I get neither weeds nor moss - even in the shade.

And please don't take the anthropomorphic comment too seriously - your post abruptly went from moss in general to pluralizing individual plants in a manner that struck me as amusing. It was wrong of me to comment on it.
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