High RH and soil water retention
Dave
8 years ago
last modified: 8 years ago
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Dave
8 years agoRelated Discussions
Container Soils - Water Movement & Retention XV
Comments (155)Hi, rina. I know wood chips are different than bark, but I saw a nursery that was using these mixed with some alder saw dust. In about a year it turned to this incredible black, rich "soil". The guy as the nursery said it breaks down better and more nutritious for the soil and depletes less nitrogen in the process. The wood chips I was seeking are about the size of medium bark in nurseries. In retrospect, I am glad I didn't try that. Works great outdoors, not sure about containers! The black bark is essentially composted evergreen tree bark. I say evergreen because it could be a mix of a number of different types here in the Pacific NW --- hemlock, fir, ceder, spruce, etc. I didn't screen it, it seemed plenty loose initially; small to medium size in comparison to bagged nursery store bark. It would have been o.k. had I added the peat and perlite per the formulas given here. Screening would have left just the larger pieces, but that would be quite a chore for the volume I was using! I repotted some of the plants using the 5:1:1 formula with my black bark and those are doing much, much, better. A gardening friend said "Think of it...bark is like big saw dust. If you pack it down it gets as hard as a board". That is essentially what happened when I used the black bark alone without the the perlite and moss. ;(...See MoreToo Much Water Retention in Soil
Comments (3)How big are your trees? If they are well established they probably don't care or they wouldn't be there. If you are planting new, in clay you should dig a fairly shallow and wide hole so that the root ball is 1/3 - 1/2 above the ground, and mound soil and mulch around it to cover. This will help with the drainage problem until the tree gets established. If the clay is deep, and it probably is, improving drainage in the first few inches by the addition of gypsum and organic matter is only going to go so far. Once the water gets down past that it will still pool up on the heavy clay beneath. My neighbors have this problem, soggy backyard, and they planted a row of river birch and a cypress tree (which are meant to grow in swamps). Those suck out a good amount of water....See MoreDry Soil with no water retention - Bad soil or peat moss? PLEASE HELP!
Comments (22)The word of the day is "Let the buyer beware" . How many here would call someone and say "I want a new car. Get me one and I will pay you what you want"? Why do we do that with soil? So often we see here someone bought some soil and it was not what they wanted, or expected, because they relied on the seller to give them what they wanted and that happens seldom. Someone wanting to purchase soil needs to determine what they want and go and look for it., same as buying that car. Do not rely on someone's description of soil as "topsoil" (a meaningless term), or "garden soil" (also meaningless), but go and look at what is being sold. Look at the soil, smell the soil, feel the soil, ask for a one cup sample of the soil for testing as described in "Soil test for organic matter" above. A good soil mix for a garden is one with about 45 percent sand, 25 percent silt, 25 percent clay and 5 percent organic matter, soil some maintain is improbable to get. If we all demand that mix it will become available if those selling soil want to stay in business. If we, as buyers, demand quality we will get it. kimmq is kimmsr...See MoreContainer Soils - Water Movement and Retention 4/11/20
Comments (123)Since I am new to Al's gritty mix, I got to start fresh looking for sifting solutions for the Turface. I thought I would share what I found. It may be useful to others, or it may be me doing it wrong and you can let me know. I ordered these screens off of Etsy, https://www.etsy.com/listing/1019347355/18-classifier-sifting-pan-stainless?ref=hp_rv-4 for about $28 each. I got the 1/8 and 1/12 sifter. They stack and are advertised to fit in a 5-gallon bucket. I don't have that but it fit in one of the larger planters I have. It is fairly easy to rock the bucket/sifters and the Turface grades pretty quickly. This is the material sizes you get: Complete dropthrough fines Caught by 1/12 screen Caught by 1/8 screen Because a significant amount falls through as fines, I decided I would use the two larger sizes and just sift with the 1/12 screen to separate the fines. This leaves a mix that looks like this: Hopefully this is not too great a variation in size and I hope you let me know. But if I sift to only use the largest size, then a significant amount of a 50lb bag of Turface is not usable. Here is the breakdown of the amounts I got. For the amount I sifted to both screens, I got a huge amount of fines (on the left). Two pots of the 1/12 sift, and only one pot of the larger 1/8 sift. That is not much useable material unless I accept everything but the fines. I am planning to use the fines in the drainage for another rain garden I am planning as part of an absorbent filter along with maybe a thick layer of peat moss. My theory is the layering of Turface with peat will help excess rain filter more efficiently into the ground. We have pretty heavy clay soil in our area....See MoreDave
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tapla (mid-Michigan, USDA z5b-6a)