The last one looks like Wild Strawberry (Fragaria virginiana).

Susan

+1 on the wild strawberry. I pulled two empty mulch bags of this stuff out of my lysimachia and creeping phlox this morning.

Without being able to see a closeup of the leaf formation and on the bush, I'll have to go with 1) a wild plum, don't know which species, or possibly, but not probably 2) one of the hawthorn species. That's my best guess with the pics.

Marcy

I think the first is wild plum which is in bloom now. Don't believe the second is wild strawberry--it's definitely not poison ivy or oak. Can't tell for sure but think it might be wild blackberry, as you said canes. Do the canes have prickers? If it is blackberry it will have white blooms soon.

My first thought on the first one was a plum tree, but I wasn't sure. I believe the fourth one is wild strawberry. My flower beds were filled with those when I moved in.

My guess is wild plum on the first and blackberry on the second - will be interesting to see what they turn out to be.

I looked up Fragaria virginiana on gardenweb and ended up on Missouriplants.com looking at a very good photo of what I recognized as wild strawberry as it grows here in our area. I am still not convinced your picture is of that. I don't know how to link or I would just link the photo, but perhaps you can find it and make a comparison.

Dorothy - Go to the web page that has the picture you want to link. Highlight the web page address at the top of the page that starts http://

Once it is highlighted, stay in the block and right click your mouse button and choose "copy".

Now go back to the GardenWeb message that you are typing and go to the block that says "Optional Link URL" at the bottom of the message screen. Get inside the block and click your mouse and you will see a line to let you know it is ready. Now "right click" your mouse again, but this time choose, "paste". The URL should appear in the block. Now in the box below that says "Name of the Link", give it a name of YOUR choice. Then preview just like normal, but also check the link and make sure it is working before you submit.

After going back and reading more of Megan's descriptions, I think Dorothy is right about the second set of pictures being wild blackberry or "brambles", as I talk ugly about them in the fence rows.

The pic taken from the top lead me to believe it was a plant growing closely to the ground, thus wild strawberry. Good job, girls!

But I still hate wild strawberry. And wild blackberry. Dig it up, Megan, regularly! And leave the wild plum if you like it where it is.

Marcy

Ok, after you guys assured me that it wasn't poison ivy (I should have known, but I'm really paranoid about it!), I went out and took a closer look and some better photos. The leaves look a lot like the wild strawberry photos that I saw online. The vines are reddish and woody with tiny thorns. They are basically sprawling all over the fence and the ground nearby. It looks like they have a lot of buds that are close to opening, so maybe I'll be able to tell more after it flowers?
Here is a link to an album with photos of the plant.

I hope that the tree is a wild plum! I'd love to have a fruit tree. It is very, very close to the base of another tree, but still fairly small--about 2-2.5 feet tall. Is it safe to dig it up and move it now? Or should I wait for a better time--warmer/cooler?
Here is a link to an album with photos of the tree.

Thanks again for your help! I've been going around our yard trying to identify flowers, vines and trees so that I know what to keep (and keep from mowing over) and what needs to go.

I'm still thinking wild plum for the little tree. You might be able to transplant it now, but would probably have better luck if you wait until next November when it is dormant. That will give it the winter to settle in.

Wild strawberries don't have stickers and they don't make vines or canes. They make runners like domestic strawberries, and start new small plants which root at the end of the runner, so I still think blackberry. However you may have to wait for fruit to know for sure as the flowers of both blackberry and strawberry are white with only a few petals.

Waiting until November sounds fine by me with all of the other things I'm trying to get done this month. I'll need to put some thought into where we should move it anyway.

If the vines could be wild blackberries, I think I will leave the ones along the fence for now and take Marcy's advice and get rid of all the rest. If they turn out to be something else, I may just dig them all up later on. They aren't hurting anything along the fence line, but they are definitely spreading. I've found similar plants 10-15 feet in all directions.

If they are wild blackberries, will that affect the new blackberry plants that I just bought to put in? I've read that wild ones can spread disease to the varieties that I'm planting, but they will be going on the other side of the 1/2 acre backyard. Is that far enough apart?

-Megan

I don't know about the wild blackberry/disease connection but I forgot to tell you that you probably won't get much fruit from a wild plum. I don't anyway and I have a dozen or so scattered around the place. The plums are very small and the pits rather large in proportion.