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 struck out on finding the gypsum at Lowes : ( I felt fairly certain I could find it there. How annoying. I might be able to find it at this florist/small garden center, but I think that is unlikely. I'll try looking there anyway, since I have to run errands in that general area tomorrow. I did go ahead and use some gritty mix sans gypsum for some succulent cuttings, just to get them into something for now. Hopefully that won't be a terrible thing, but I figured succulents could tough it out for a while.

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