How do you get rid of poison oak or ivy intwined in a wild rose bush,with out killing the bush?

This is just the thing! I find this works wonderfully. You have to cut the poison ivy or oak and then brush this on the top of where you cut it. Bonide

Here's a post that might help - https://chascrazycreations.com/home-made-weed-killers/

Bonide on the stump of where you will be cutting off the poison ivy/oak. Apply the Bonide with a brush, be sure to wear gloves.

Keep digging it up

Hi Vicky, hope this helps you. Cut into the vine and put undiluted white vinegar on each of the cuts you made. this should kill the vine but you bush will be okay.

Hi Vicky: Wear protective clothing and maybe even safety glasses. You can use a product called Ground Clear by Ortho. However, it will kill everything it touches, so put it in a spray bottle, or buy the spray, (the refill is cheaper, $5.97 for 24 oz vs $6.97 for a gallon Search Results for ground clear at The Home Depot) and spray the leaves, top and bottom. Put a tarp on the ground to catch any overflow. Also, and this is what I did, was to cut the plant down to about 6" from the ground, putting the cuttings into a bag. Then, I got a syringe filled with the ground clear and injected the remaining stem in several places, and the top. The plant will take the poison to the roots, killing the plant. You may have to do this a couple of times, but it works.