Right, it won't be hot when you spread it out, but it will still be hot in the sense that is killing your plants. Did you check for live stock and feed stores? I am going to suggest my top product for browns. Master Black Forest Compost. I use it as a brown in my bins. It is expensive, but it is compressed, so one bag can go further then the small size uncompressed bag. It is woody, but the wood is finely ground. There are no big pieces of wood that will slow you down. If I can't find this I use Kellogs Amend that you can get at home depot. But Master Black Forest Compost is better and makes better compost. I think the last bag I used of Kelloggs amend that dandelions seeds in it. I used it on plants without composting it one time, and I got millions of dandelions. But, if I compost it first with the coffee, I don't get an many dandelions. But, if you use a mulch with big pieces you have to keep screening them out, so it is just more time consuming. A microbark will work. The pieces need to be really small, but not as small as saw dust. There is probably also a time frame you need to discover before you can use this compost. If you are not adding browns it won't be processing itself on the way to becoming cooler. A year would be safe, I guess, like Lloyd says. He would know. Here is a link that might be useful: Master Black Forest Compost

Your plants look fine now based on your fertilizer addition, but one concern I have is that you mention "layers"... Peat moss and bagged "garden soil" can add a organic matter, increase water retention, and improve drainage - assuming that it is mixed in well (and deeply as missourigardener1 mentioned) with your native soil (or delivered top soil in some cases). As far as not seeing any worms, I wouldn't worry too much about that. If it's been dry at all lately (and by your pics it looks dry), the worms will go deeper into the soil and you may not find them very easily. It's nice to see them, but a lack of them at certain times isn't great cause for concern. Adding more organic matter and a little mulch will encourage them to work closer to the surface and closer to your plants - And I would definitly look into adding mulch if your concerned about high temps and / or the soil drying out too quick. My garden is usually covered in worms, but when we had a drought about a year or so ago, I went almost the whole summer without seeing one.

Went to see my mango plant today and saw the leaves looking bad. Is this a sign of excess nitrogen in the soil?

Went to see my mango plant today and saw the leaves looking bad. Is this a sign of excess nitrogen in the soil? Is this salt burn