When/how should you remove then transplant some very established rosebushes?

We'd like to remove then transplant some very established rosebushes and are wondering how to even begin. These plants will be removed and replanted within the same zone (San Francisco Peninsula area).We've heard this should be done when the plants are dormant, which I believe is later in the year, though the possibility of actually being able to do is pretty slim. (the home they're located at is going on the market within a few months).

Where do we begin and what materials (burlap,soil , etc.) will we need to even begin this endeavor? Also are there any written resources that you could recommend?

Thank you in advance!

Answers:
It really needs to be done it the fall. But if you are short on time there are some things you can do. The most important concept of transplanting roses especially at other times then the ideal season, is to have more root than plant. When you dig, and that depends on what size of transplant you can handle, prune prune prune!!You want alot of ROOT, and quite lesser rose bush. This helps the roots to take care of the bush itself while it also has enough energy to root itself. Roses have a long and large tap root, very similar to a tree.It is in the center and when you dig ...go a deep as practical for you to handle, trying to keep as much of the root ball as possible. Have your new hole ready to go so they will be right back in the ground. It would be a good idea to have very good soil standing by to replace the old. Plant the bush at the same level it came from....no deeper no higher. When you plant water it in VERY well and very SLOW adding a root stimulant
keep it moist for several weeks not wet but moist, do not feed it for about 2-3 weeks or you might burn it. You may need to prune as it gets established, if you see leafs turning brown, prune them.
Good potting soil,
a container to carry your transplant(wheel barrow would be fine)
Root stimulater (fertilome makes a good one)
Pruners, sharp shovel, garden hose
The sooner you begin the better, the hotter it is the more stress your rose will have.
I wish you the best of luck with your roses, and the sale of your home.
God Bless Grandma

Other answers:
i have always been told to only transplant in the months ending in (R,)old wives tale? maybe
i have always been told to only transplant in the months ending in (R,)old wives tale? maybe
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