These are some tips for making Als gritty mix. I hope people on the forum and others who googled there way here will find it helpful. Screening  I would buy a large 18 gallon rope tub container which is only around $5-10. Then put an insect screening on top of it and use holding clips to secure the screen onto the tub. Make the screen concave down to the tub so the materials wonÂt fly out when screening. I believe all insect screening is 1/16 inch. Hardware cloth  I bought mine at Orchard hardware supply for around $2 bucks a foot. I bought 2 foot each. They fit perfectly on top of the tub with the insect screen right below it (see photo). I use 1/4 inch to screen out the pine barks. Fine bark  leave these laid outside in the sun so they will dry. Mix them around every few hours as the barks underneath will still be wet. Drying the barks will make it easier when removing the dust and powder when screening. Preparing to mix the soil - I would wash the granite really well, I can basically smell the salt coming out of it from the brand I was using (A1 granite grit #10). Mix your batch up first then wash it again really well before moving them into the pot container. Use insect screen to cover the holes inside the containers so the mix wonÂt fall out. Supplies  Use google map to find stores locally and just call the stores to find your supplies. Use "feed stores" for granite grit. (Gran-I-Grit  grower size, is the best). For turface, use this link, http://www.turface.com/distributors/state/. John Deere stores will carry Turface Allsport which is the same as MVP. "Allsport Pro" will be too fine for use in the gritty mix. Gypsum  if you plan on using a lot, just buy a 50 lb bag, I got mine for 6 dollars. Fertilizer  I am using a 9 month slow release fertilizer, brand = Dynamite. Some of these slow release fertilizer will also have the micronutrient you need so you wonÂt have to buy it separately. Remember to buy a few empty buckets to store your supplies.

I limit the organic (bark) component of the gritty mix to 1/3 or less of the o/a volume so there is no chance the organic fraction will decompose and the soil collapse structurally. You don't want the bark breaking up into so many small pieces that they clog the air pores in the soil and create/contribute to the volume of water in the PWT. We don't usually add lime to the gritty mix - using gypsum instead, and the Epsom salts is added a little at a time to the fertilizer solution each time you fertilize. Porous soils allow excellent gas exchange in the rhizosphere. They allow gases generated by the composting process (methane, CO2, sulfurous compounds) to quickly escape the soil while air diffuses back into the soil in the other gasses' stead. Al

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

Well, yesterday I used the gritty mix for the first time. I put a persian lilac seedling in the gritty mix (3-4-2) and a spider plant in 1-1-1. I am a bit scared as to how often to water since within a couple of hours the wick on the bottom was dry. I watered again and this morning dry again, so I watered again. Is this normal? The summer heat is not here yet and I am a bit worried about watering. Also the spider plant does not look too good, it is wilted quite a bit. I plan on putting some vincas in the 5-1-1 and see how that goes. I totally understand the benefits of the gritty mix but...are the plants going to make it if I water once a day? Also when is good time to start fertilizing the new potted plants and how much. I also plan on moving my african violet and the peace lily in the gritty (1-1-1) but they will be inside. Please someone help and build my confidence up...:( Michael