Problem! Clay + sand = concrere
Tristan
6 years ago
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Comments (23)
glib
6 years agoJon Biddenback
6 years agoRelated Discussions
sharp/coarse sand to amend clay
Comments (22)Kimmsr, this is essentially a composting forum, and EVERYONE here recognizes, nay, advocates the use of copious amounts of compost. I don't think anyone here is suggesting sand or silt can take the place of compost for amending clay. So you can stop beating us with that stick. It's not an either-or proposition, as illustrated beautifully by Albion's post. This is basically what I've done, although with less sand. I've added tons of organic matter to my clay over the years, and occasionally a bag of sand I come across or a wheelbarrow of river silt. I don't have concrete, I have raised beds with great soil. Either the high organic matter mitigates the 'concrete' effect, or I never added enough pure sand to get into the concrete zone, or I also added enough silt (or it was there in the silty clay to begin with), that I now have loam and not sandy clay. I never went out to buy sand for the specific purpose of amending the clay, and I wouldn't necessarily advocate that, but there are some success stories right here. I would say that if you add enough compost to eventually fluff the beds into raised beds, that mitigates many of the problems with clay, so you don't really need massive amounts of sand....See MoreClay, silt, and sand layers - failure
Comments (33)No offense taken. I won't get the clay/silt/sand percentages until tomorrow (Tuesday) morning. ==== My first post-retirement "project" was to re-do my 400 sq. ft. garden. It contained about 20 hybrid-tea and grandiflora roses; a holly bush; a 4-year-old flowering plum tree; a small pineapple guava; several other shrubs; gazanias; and billions of ever-recurring weeds (primarily black medic and common groundsel) The holly, plum tree, guava and other shrubs are in good shape. Most of the roses are growing wonderfully but some are barely hanging on. The many-years-old gazanias flowers sparsely and it has a lot of long runners (most of which are dead). My original “plan” (in mid-January) was to: Order 6 bareroot roses Remove the gazanias Pull the weeds Apply Preen pre-emergent weed preventer Plant 6 bareroot roses Cover the soil with cardboard/newspaper (to deter new weeds) Finish with 4 inches of bark mulch. But the new roses arrived early so I quickly pulled the gazanias and weeds and planted the roses. I then contacted the Preen Company and they said to wait until the bareroot roses had “become established” before applying the Preen. But four of the new roses never grew any shoots or leaves and their canes are now black. I then got wondering about whether using cardboard/newspaper was such a good idea. Many gardenweb members say that, although it would prevent light from reaching new weeds, it would also prevent air, water and nutrients from reaching the roots of the desirable plants. So, I’ve decided not to use cardboard/newspaper and to just apply 4-inches of bark mulch. Then I got concerned about the condition of the soil (due to the presence of the black medic and common groundsel and the problems with the bareroot roses and some of the existing roses) so I’ve had the soil tested by UMASS. Until I get those results back, I don’t know if I need to add organic matter, decrease the pH, add nitrogen and/or take other actions. The recommendation about adding boron is in EarthCo's report so I applied borax (as prescribed) to my garden in 2002. UMASS's analysis in 2015 contained no recommendation about boron. Of course, new weeds have re-appeared since mid-January so I’ll have to re-weed before I apply the bark mulch....See Moreroses on clay vs sand in hot climates and cold climates
Comments (51)Came back to this thread to check on Comte de Chambord, yes, Val grows it, and I agree that needs loamy soil, lots of rain, and healthier if alkaline. Comte is rooting easily in my wet baggie, and rooted easily in heavy out-door rain, while other cuttings rot. Comte has aggressive root and can root easily in alkaline sand, but I need to make my rooting-medium more acidic for the cuttings which are harder to root. Pink Pet definitely likes dry/loamy soil and warmer climate (Val's pic. is awesome). But died in my soaking wet clay last winter....See MoreCan I purchase clay soil or sand to help with a yard drainage problem?
Comments (4)If the basic grading around your how wasn't done correctly at the build or over the years has settled badly... the best option would be to get it graded again.... but this is also the most costly and destructive to any existing landscaping you have in place. Since no one else has jumped in… here’s my take. I am not a pro… so take that into consideration. But if I had a similar problem.. This is what I might do. Adding porous soil on top won’t help. This would include sand, many “topsoils” you can buy at big box stores, or most likely any “dirt” you can buy at a big box store. Many times these aremade from organic materials which will break down over time and you will end up in the same spot. They typically don’t have much mineral content which won’t degrade. Assuming you have clay soil… you would want to add more clay soil to match the clay soil below your top soil. The dense clay is what will direct your water in any directiong. So you could scrape back the decent top soil you have until you get to the subsoil and then add the new clay soil….. Increasing the slope. Then pull the decent top soil back. You could find a source for “clean fill dirt” or just find some cruddy clean dirt from construction site to get the “clay” that you need. Or you can get it delivered. It’s a lot of work. Another option would be to add a french drain of some sort. There’s many youtube videos on this process. It’s a lot of work too! You have any pictures to give a better idea of your issue?...See Morewaynedanielson
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6 years agolast modified: 6 years agoTristan
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6 years agoTristan
6 years agoUser
6 years agokimmq
6 years agoJon Biddenback
6 years agoTristan
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6 years agoJon Biddenback
6 years agoTristan
6 years agoJon Biddenback
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