We bought a toaster oven just for this purpose. I might just let it go for an hour next time to be safe.Depends on a lot of things. See this thread though.
Yes, there is such a thing as too long. An oven cycles on and off to keep the temp kinda consistent but you can cook off a lot of good stuff too. I pulled a pan of weed out of my 285 dry oven and it was smoking. Not good...
So if I got this right 5mg of the bud has 1 mg of thc?Sorry. My apologies. There are 1000 mg in a gram so the 3.5 grams you bought is 3500 mg. If your bud tests at 19.9%, that is essentially 20% THC. 20% of 3500 is 700. I saw some charts saying to start with 1 to 2.5 mg. To measure that, you will need a pretty accurate scale like drug dealers use. Personally, I would try to make some brownies or cookies with what you have. I make brownies that I cut up a 13”x9” pan into 120 pieces. Your 700 mg mixed into a batch of brownies that is cut into 120 pieces would have a little under 6 mg of THC in them. I actually only eat a half a brownie usually so in your case, that would be about 3 mg. A quarter would be 1.5 mg. If you go the brownie route and have already decarbed, cook the brownies at 300 deg f instead of the recommended 350 deg or you make cook off some of the cannabinoids. Another option is a tincture. I use everclear but you may not want to give your daughter alcohol. There is another way to make tincture with MCT which is an oil. I have not used it but have had MCT tincture and it is pretty much flavorless and may be a good choice. Again, my apologies. We get some trolls on here from time to time.