So they are slimy and rotting? Mushroom compost is expensive and you are getting it for free. :) I love seeing mushrooms; it means my soil is alive. Yes, fungi it a good sign. You will also at various times have critters and other kinds of seemingly odd visitors and residents. Relax and enjoy the show. Takes pictures and document their comings and goings and how your garden does before, during and after they arrive. Unless you can specifically show that something living in your garden is causing appreciable damage (like squash bugs, for example), leave it be. Gardens are spaces which are alive and attracting biodiversity is good. Even something which causes only a little bit of damage should be monitored but ignored, because the predators that will solve the problem for you always show up later and need something to eat. However, it doesn't sound like your garden gets much sun. 5 hours might be okay in OK, but some sun-lovers like tomatoes might under-perform. If so, next year choose a smaller tomato or a grape tomato. They need less sun than their larger-fruiting cousins. You might be okay, though -- 5 hours of direct afternoon sun is marginal but sufficient here.

Mushrooms are the fruiting bodies of a large underground web. Various mushrooms fruit at various times of the year, most often when the soil is wet -- if it has rained a lot in your area in the past week or two that may be a factor. Many fruit in the late summer and fall after the summer drought. Most mushrooms fruit for only a short time. It is hard ot get rid of them as you need to destroy the underground network which can cover several city lots and it will require chemicals which are likely to more toxic to your pets than the mushrooms are. If you don't like them, pick them and add to the compost pile. To identify most mushrooms you need a good field guide, a magnifying glass and an expert by your side. Dogs and cats are unlikely to eat mushrooms unless they have been fried in butter first.

I have both of these in my yard this summer and I have never had them before. Did you ever find out what they are, if they are connected to each other and what did you do to get rid of them. My lawncare company has never seen them before either.

I have heard of some trees having defenses that inhibit growth of nearby competiton. I dont know which species, sorry. No tree will grow to its potential in a pot, and they will grow slower potted. So I would say that they both need pots. You could use a five gallon bucket found where pro painters are working for free, just wash it clean. Just put a bunch of 1/4" holes in it on the bottom and some on the sides down low for drainage. Your mango should grow quickly in warm conditions. But remember they are tropical and have other needs than other trees. It may grow happily in a cheap colander, which promotes good roots for bonsai or before going in the ground. They make overwatering very hard to do in a gritty mix. Mangos have long leaves that are too big for bonsai. I didnt see where you live but mangos can grow but never fruit in some places. I live in Costa Rica at 1300 meters, and the trees grow great but fruit very little or dont fruit at all. A few hundred meters lower they fruit like crazy. I dont want to discourage you at all, but some other species may be better for you, so you enjoy the hobby. I would say ficus are a good tree to start with as they can be awesome bonsai and are not too expensive. Other people may have more advice. If you really like bonsai, join a local club. Your surely starting at a good age, bonsai is a life long journey of learning. I hope you stick with it. I like your energy and that you want to learn! Enjoy your journey and always ask questions...