Do you have lights on at night? Sometimes they don't do what you want or expect them to because you're adding things to their enviroment that would otherwise hinder their normal cycles in the wild.

It is set to go off every night for ten minutes and I only have it turned on when we're not getting rain. From what you're saying, could this be a lot of my problem? Ding, we have a winner! It certainly isn't all of the issue, but it's causing some of it. Watering like that encourages weeds to sprout because seeds like to be damped down daily. This year, try playing it more by ear. Water the grass for an hour or so (set out a tuna can to measure the actual amount of watering) only when it starts to wilt. That'll discourage weeds and encourage good strong roots on the grass. What would happen if I spray all the dandelions down with vinegar? Would I have a kazillion brown spots in my lawn? Forever? Temporarily, yes. What happens over the long term depends on the lawn. Fescue and ryegrass don't spread very much, so the hole should be reseeded. Kentucky bluegrass can spread about the size of a baseball per season so it takes care of its own small holes (it goes faster if well-fed). Right now I must have a thousand small brown dead holes in the lawn. The old dead stuff will drop off and disappear in a week or three, and the bluegrass will fill it in by the end of May with no trouble.

Much to my dismay, the lilies I received from a friend turned out to be ditch lilies. Those suckers are everyWHERE! I'm getting out roundup. I can't believe it! ARRRRUUUGH. I have decided where to grow gooseneck loosestrife and I am willing to put up with it to keep it in check. Problem is, there are two areas I need to eradicate it from and that's not going to be easy. PLUS, I have a ton of dandelions and henbit this year - worse than last year. I'm out there spraying and pulling.

Try the Liquid Fence. It does work quite well for me. As long as I spray well about once a month, and go back weekly and spot spray around the edges of any thing deer or rabbits might be attracted to, they do not eat those things.