@greenman28 "I pre-water my containers first, then I slowly add the fertilizer solution until I see water exiting the bottom" I am assuming that you wait until the soil is more or less dry all throughout (checking with a wooden dowel)? For large pots, this method seems to takes a long while. I feel like I'm wasting wasting good fertilizer in the process. I pre-water until I start seeing water coming out of the drain hole (the pot is a few inches raised above a drain plate), then I immediately add the fertilizer... but I never know how much, especially in very large pots where I hold my citrus. 0.5 gal? 0.25 gal? I can't seem to find anything about this. It often seems I'm wasting a lot and making a 4-5 1-gallon batches just to fertilize a couple plants. I do collect the effluent in the drain plates I have my containers in, if the pot isn't way too heavy to pick up.

Here's a list of all the FL dealers/stores that carry Dyna-gro not all of them carry Foliage Pro 9-3-6, you'll have to call and ask... I bought mine in Orlando(Tropical Plant Products), I happen to be in that area, so that's were I got mine a few months ago. I will need more soon... Shipping would have been $12-15 for a gallon. Click on Dyna gro dealers, then click on FL state... Here is a link that might be useful: Dyna-Gro Fertilizers

I use a product called Dynamite 18-6-8 (green) which also has micronutrients. I use for all my ferns - I purchased ratty looking ferns from Walmart last year, used some of this fertilizer and the lush new growth was awesome. I think I've seen the product at Walmart, Hawks Nursery, and Minor's Garden Center. I know this isn't the product you are asking about, but an alternative if you can't find what you are looking for. Good luck.

Dave- I haven't used it yet. CoriAnn uses it. I'll ask her. I'll let everyone know if I see any improvement to anthracnose after I foliar spray since I don't have much blackspot. I'll also see if it helps with aphids since I have these too. Patty- funny in a not funny, haha, way! I think "ironic" might be the better word. Is anthracnose as bad a disease as black spot? My roses look awful but they still have their leaves unlike with bs. And some of the Kordes are fine as is Julia and my DA Windermere and Queen of Sweden. I'm still learning. Since it doesn't cause complete defoliation I'm thinking (hoping) it might be the lesser of two evils. I haven't sprayed yet, partly out of laziness but mostly out of concern for the environment. So many of these products are harmful to aquatic life. Our property abuts a designated swamp. I'd hate to cause damage to the eco-system there. My hydrangeas and hostas look fine so it doesn't seem as bad as yours. I'll let you know when I use the Pro-tekt. With luck it just might do what it says it does. Wouldn't that be great :-) Kelp4Less has silica powder available for hydroponics. According to the info it has recently been approved asa plant nutrient recognized by science. It's helpful for those who especially grow in raised beds or pots which CoriAnn does. I have bought from Kelp4Less. They're a bit pricy but have great service and organic products. The video is a bit long but here's the link if anyone is interested- https://www.youtube.com/watch?v=YB5pBCdnMTE Dave- it seems according to the Kelp4Less is used as a drench not a foliar spray. It might be because they are geared more to hydroponics though. Their's is neutral ph. There are 9 reviews by buyers that say they see improvement in stem strength, leaf strength and disease resistance. I don't think CoriAnn gets much disease in CA where she gardens but she does get extreme heat and uses Pro-tekt for heat and drought stress. Sharon