OP has delivered!!!!! Here are the pics I promised. I didn't read through all the comments again to see if I ever explained what I had done so I'll just do a quick shake down. I bought seedlings from the Idaho extension acorns from a website called acorno.com. I planted the seedlings in 1 gallon rootmaker pots, 3 gallon rootmaker bags, and some in my garden boxes. I planted the acorns in the little 2.5"x 2.5" rootmaker pots and a few in my raised beds. I planted bur, n. red oak, and a couple pin oak acorns. The seedlings were all bur oak. I build a little potting bench from scrap wood I had lying around and put all of my pots on top of that on the east side of my house. They get good sun until about 1300 hours then shade. The ones I planted in the garden boxes get full sun and there isn't great drainage so the box soil is basically always wet. (Its my first year with those so I have some work to do this fall/spring getting the drainage issues figured out.) We have had the hottest summer on record and have been in the mid 90's basically since the beginning of June. I have tried to water the potted plants every afternoon when I get home from work and have only missed a few days. As you can see, the small potted acorns have all died. I think that the pots were just too small to store moisture during the day heat and dried out before I could get to watering them after work. The 1 and 3 gallon potted oaks look great other than a bit of leaf scorch. The oaks planted in the raised beds seem to be doing just as well. They have some scorch but the little guys are green and have good leaves. I haven't gotten any real growth out of any of them. I'm not sure if its the heat, lack of water/ too much water, or anything else. I am not sure where to go from here. This was totally just an experiment but I need to decide what to do with them before winter. I have a spot in the back south west corner of my yard that is just dirt. I haven't gotten around to doing flowers there yet and have considered planting my oaks in tidy rows there to have them mature a bit and bare root them when they get 4-5 feet tall. I still haven't decided on that though. Here is a link that might be useful: Oak Seedling Album

if i had to do it .... i would get a pot.. and some cactus mix.. and transplant it ASAP ... and get it accustomed to the pot.. before the long drive home. and then i would put the pot in full shade and not plant it in mother earth.. until the leaves fall off ... trees do not like regular high peat media... it can hold too much water .. they like a drink and near total drainage ... even to be dry for a day or two .. before wetting again .... but in a small pot.. dont let the pot get too hot.. nor too dry.. while holding the plant over ... even if you have to stick the pot in the soil.. to temper august heat ... but dont shock it twice.. by digging it up.. then transporting it .. and then immediately replanting it... wait.. thats three shocks... and on the drive home.. no stopping for 12 afternoon drinks.. and leaving your pet tree in a closed car on the parking lot... crikey.. traveling with plants is worse than kids.. you just cant leave them in a closed locked car ... lol ... make sense...?? someone else can ID it for you .. but why not practice regardless... good luck.. let us know how it works out ... ken ps: i was told .. long ago.. its hard to ID oak babes.. as mature leaf form is better for ID ....but it sure does look like a swamper to my untrained eye ....

connie, me too! went to get veggie garden ready for spring...pulling up small weeds...and guess what? Some seedlings attached to acorns! Hadn't seen that before. We did have alot drop from the tree, although it didn't keep the squirrels away from my feeders!

Where are you? That info will be important in deciding ID. Also, IME many oak seedling leaves don't necessarily look exactly like those of more mature plants, so if you have other acorns or can clearly describe size, shape, and color pattern of the acorns or can take a photo of the tree the acorns came from, you may get a more certain ID. Also, simply trimming the original photo doesn't help. We can't see details and there are many, many species of oaks in the US (if that is where you are.) Yours appears to be in the red oak group (pointed leaf tips) though I can't be 100% sure from the photos with the light behind them, but that is still a lot of possibilities, so any additional information you can give will help.