What is this Al's gritty mix?
14 years ago
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- 14 years ago
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Welcome back Al, questions about Al's mix and gritty mix
Comments (2)"Did you later start using the gritty mix and abandon the basic mix?" No. I use the gritty mix for plants that will be in the same soil for more than a single growth cycle. I use the 5:1:1 mix for all my veggies and display containers for the decks & gardens. I usually turn the 5:1:1 mix into the gardens, beds, or the compost pile at the end of the season. You got the gritty mix right, but The 5:1:1 mix is 5 parts partially composted pine bark fines 1 part sphagnum peat 1 part perlite garden lime The granite for the gritty mix is usually found at rural elevators/feed stores under the name "Gran-I-Grit" (grower size) or Cherry Stone (#2 size). Al...See Moremodified Al's Gritty Mix and 5.1.1 mix
Comments (12)Around here the pine bark mix at Home Depot that works is the #302 Golden Trophy bags. I've been using this for the last 4 or 5 years. The only problem is that the #302 bags vary significantly from pallet to pallet. You need to check an open bag and make sure. If the chunks are small then the entire pallet is probably OK. If not the bags in the entire pallet is not usable. I got burned this year in my first buy and had to unload all the bags to someone's in ground garden (after a harsh winter I wasn't thinking straight :-). The bags were wet and the chunks seemed small after a quick inspection but after getting them home they stunk (which I heard was not good) and had a lot of sticks and bigger chunks hidden in them. A week later I went to a different Home Depot and found a pallet of perfect #302 pine bark and loaded up as many bags that will fit into the van. A couple of years ago the good pallet of #302 was behind a bad pallet which required me to climb over the bad pallet to get to the good pallet. The employees at Home Depot must have thought I was nuts. Last year I found #302 Golden Trophy at Menards with the same pallet to pallet differences but this year Menards doesn't seem to carry it....See MoreAlternates for Al's Gritty Mix and 5:1:1 Mix
Comments (9)I'm just musing here & not being snippy, but I think that the 5:1:1 mix performs significantly better than peat based soils, and remains structurally sound much longer (4-5 times longer, based on all other cultural conditions being equal). The gritty mix is even better, providing greater aeration and lasting indefinitely. I'm not saying that to promote what others refer to as 'Al's Soils', only to illustrate that soils that are highly aerated and structurally stable are much preferred to peat/coir/compost-based soils for the results oriented crowd. I'm able to say this based on the hundreds of people at GW and other sites that are using these soils and some fertilizer recommendations with a degree of success that has them saying they left soils like MG or other peat-based soils and will never look back. There is a crowd that wants to make things easier (these soils are much more forgiving and easier to grow in) and appreciates the idea that their plants are growing at closer to their genetic potential. Then, there is the group that feels that what they are using is 'good enough'. I have no quarrel with how folks establish their priorities, but what I usually hear, and what I'm hearing above is 'it's too much bother'. I never try to coax anyone to use "my" soils. I only point out the considerable benefits of higher aeration and greater durability and let others decide. I respect your decisions, but at the same time I can point to the fact that what's easier for the grower and what's better for the plant are often mutually exclusive. In this case, there is an inverse relationship between effort and results, but it's not as great as it seems. Yes, there is some effort involved in finding the ingredients and making the soil, but part of that effort is negated in the fact that healthier roots make healthier plants and healthy plants are less susceptible to insects and disease, and are more productive or prolific. Include the fact that root rot and soluble salts accumulation (especially for houseplants) is something you would have to work at to achieve, and you've got a pretty good case for abandoning the heavy soils. In the end, it always almost always distills to an individual decision. Is the perceived gain worth the perceived effort. Some answer with a resounding yes, and others are not so sure or unwilling to go through the trouble. I respect any one's decision because my part in trying to help folks ends with trying to provide the best science I can so they can make up their own minds. However, if the soils didn't work considerably better than conventional soils, I'd have been handed my head long ago. ;o) Take care. Al...See MoreAl's 5:1:1 Mix vs. Al's Gritty Mix for Tropical Fruit
Comments (5)Yes you can, and in the short run 5-1-1 in may actually perfom better than the Gritty mix. But it will wear out quicker (break down) than the gritty mix. I tend to think of annuals going in the 5-1-1 mix, and perinnials in gritty mix. If you are going to be up-potting in a couple of years go with what you have. Either are a better choice than most anything you can find in most garden centers. Gritty mix makes future repots a dream, tip the pot over and you have bare roots.. Grading the pine bark is not fun, I hate it! A major concept of the gritty mix is based on particle size, larger particles have less surface area (by volume) and thus less water retention. 1/4 to 1/8 inch seems to be the optimal size, although due the screening process of pine bark and the thin strips I will let most 1/2 and under get in the mix (under 1/8 is not good either). If you are looking for Turface MVP check a local irrigation supply house, the stuff was designed for baseball diamonds so look in that direction. The dust is not good for the mix (particle size) The gran-i-grit is intended for chickens to help them digest grains. There are many other products other than gran-i-grit that will perform just as well. Look to a local farm supply house for the rock. Rock dust is not good for the mix (particle size) Gypsum is available at the big box home improvements stores. Gritty does dry out quicker than potting soil so you do need to water a bit more often. It is extremely difficult to overwater with gritty mix, that includes mother nature overwatering. Root rot is probably the number one killer of potted plants. After water, air is the most important thing you can give roots (most plants), more important than fertilizer. Gritty mix excels at this without drying out the root system. Gritty mix is heavy stuff, an advantage of heavy is the pot is less likely to tip from heavy winds. Al is a smart guy, it is such a simple concept....See More- 14 years ago
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