Well, I've got raised beds that total about 200 sq feet. If I were watering using my 1 gallon watering can, I wouldn't be wondering, because I know how much to add to a gallon of water. The problem is that this attaches to the hose, so if I put 10 oz of liquid emulsion in, how do I know it's not applying 4 oz per gallon at the start and 1 oz per gallon at the end? Maybe the lady is right and the attachment really does "take care of it". If that's the case, I do see where you're going. My square footage would calculate out to about 16 oz of fish emulsion. I put that much in the basin, assume the sprayer is making sure the right amount is getting mixed with the water and apply it evenly around my beds until the basin runs clear. Here's a follow-up question: If you all aren't using this hose attachment, how do you apply fish emulsion fertilizer? I suppose filling up my gallon watering can 8 times isn't all that much work. But I wonder what people do when they have twice as much space as I do? I think I'd get carpal tunnel after a while. LOL

You might want to review the attached link. There is a great deal of mythology associated with foliar fertilizing. Generally I recommend against it - not a reliable or very efficient method for plants to obtain necessary nutrients and will often lead to increased disease issues.......like most other overhead or foliar water will do. As far as the quality of the product is concerned, fish/kelp/seaweed emulsion is one of the very few soluble or liquid organic fertilizers. And is therefore a great organic product to use with containers, as granular or powdered organics are not very effective under those conditions. Also fine for any inground plants as well. And the stuff has a fair amount of micronutrients, which is also above average for most other organic fertilizers. So all in all, a pretty decent product to use, just not ideal if used solely as a foliar application. Here is a link that might be useful: the myth of foliar feeding

I personally like to use fish/seaweed emulsion and blend in neem oil with an emulsifier (cheap soap). Neptune's harvest - which I personally prefer as it is a cold process type (retaining the moist micro/macros) and the least offensive smell. It's 2-3-1, but the thing is, you'll be applying it more often. It's also (supposedly) absorbed more effectively. I, personally, once a week mix up a tablespoon of neem oil with an emulsifier (I use dr. bronner's soap unscented), I generally use a tablespoon or less. I then mix in an 1/8 cup of fish/sea weed emulsion. This is then mixed into a gallon of water and I use it as a soak/spray for all my plants once a week. Usually late in the day towards sunset or first thing in the morning. I don't advise doing in the morning because the risk of photo-toxicity. I like the effect of neem mixed with it because it provides a harmful insecticidal defense as well as a pathogen defense and seems to keep the critters away from the otherwise tempting scent of fish emulsion. Here is a link that might be useful: more info than you can shake a stick at on the full nutrient profile of fish emulsion

I think spraying plain water at relatively high pressure, I would use a pressure washer with one of the larger nozzles. I have a cheap home style electric pressure washer that would do a good job on the mildew without damaging the foliage. This time of year, I would not want to fertilize my cheery trees. Al