It's really tough in FL, Sharon. I've tried to find granite or cherrystone with no luck. There are some companies that sell various sizes of graded gravel used in filtering that work well, but at the moment, I'm unable to access old files on a new puter. I'll be back if a search of the forums turns up anything, as I know for certain that I offered addresses & phone numbers of places in FL that sell suitable product. You can always use coarse, screened, rinsed perlite as a sub in a pinch, too. Al

If shopping, Turface MVP can be bought at Horizon Landscaping and irrigation, Dublin; Close Feed has Dry Stall (crushed pumice) NOT TO BE confused with Stall-dry. There is also a stone yard out in Dublin with small (3/8") lava rock in bulk; sorry, forgot the name....google can help with that,

You can try Plant Products Co. Ltd., 314 Orenda Road, Brampton ON L6T 1G1 http://www.plantprod.com/horticulture-en/ProductDetails.aspx?ProductID=1496&CatID=0 I have purchased from them before but that was 3 years ago. Another place is Gro Bark that was mentioned in this post: http://forums.gardenweb.com/forums/load/fig/msg1020281118447.html I have not bought Turface from them but have bought pine bark fines. Hope that helps.

It might not matter to you but I've gotten away from using granite chips in my gritty mixes. It's fine for small to medium sized pots but when you have a 7-10 gallon pot 1/3 of which is granite it becomes backbreaking work to move them around. I have everything on rollers once they are inside but getting them inside at the end of the season is a painful experience (even with a dolly). I use appropriately sized perlite, charcoal, or a combination of the 2 to take the place of granite chips. There was some talk of fluoride toxicity with too much perlite but I've not had any problems with my citrus trees. There is an advantage to the weight - the trees in the granite never tip over even in high winds. It's a tradeoff I suppose.... protect the trees against the wind and save your back - or be lazy about possible wind tipping and break your back once a year.