well most roses dont get as large here, but this is crazy. ☹ if I lose bloom it's not worth having as it's only blooming a few weeks per year.

I would leave it and go through the rose tunnel. Don't cut it. It will turn into a romantic spot. Those other roses below might get smothered.Maybe it could head up the tree behind it.

Just what I was thinking! If that tree is close enough (hard to tell from pic angle) it would go way up into it.

Under the right conditions, and given enough time, this rose can cover 9000 sq ft:
https://www.npr.org/2014/04/16/303634602/unique-rose-bush-graces-arizona-desert-town

Lesli, here in California, Banksiae are often sheered as you would any "shrub" to maintain their shape and size. When that is done, the plant paves itself all over the surface with flowers. Instead of 12' plus of canes with little clusters of flowers spread along their lengths, the whole surface of the plant is completely covered with blooms. If you have it in the wrong place and want to keep it there, consider simply sheering it to shape it into whatever shape you desire, then keep sheering the "wild shoots" as they form. Otherwise, moving it where it can be permitted to do as it wants is the better choice, if possible.

That tree is actually too far away. I doubt my husband would be game even if it were closer. It would sure be a bugger to dig out. I think the shearing might be doable!!

I agree with roseseek - there is a grocery store parking lot in our town where they have built little (very strong metal) screens at the front of every parking spot facing the street - they are about 3 feet wide by 2 1/2 feet high. There is a small patch of dirt underneath each screen. Every one of them has a banksia lutea planted on it, which has the same growth habit as the white banksia you have. They sheer the plants, and believe it or not, each screen is covered in blossoms in the Spring, and the roses appear to be happy, despite being thwarted of each ones desire (and ability) to eat the entire parking lot and all of the cars in it!

I have seen them there for the past 20 years, and they are still blooming very well for a long time in the Spring. So, if I had your plant where it is, I would follow roseseek's advice.

Jackie

It's really surprising they would perform that way so well for so long, isn't it? Remarkable!

I just found a pic I took a few years ago of one of the screens I was talking about - I mis-remembered the exact size, and you can see that the rose is beyond its full bloom, but this is it. There are at least a two dozen of these lined up along the street frontage of the parking lot!

I also mis-remembered that the roses on these screens are NOT banksia lutea (yellow), but actually the same one that the OP has - the white banksia!

Jackie

I had never seen it before either, and when I first noticed all of the screens with the banksia roses, they were blooming, and I could not believe my eyes. The screens are only as far apart as two parking spaces are, and all I could think of was that if left to their own, that was an amazing amount of rose potential to take over everything!

Jackie

We have sheared banksia by our whole foods. Nice as they are thornless.

Be careful expecting all Banksiae to be thornless. Some are NOT. The double white at the old Encino house had vicious prickles. It caught me by surprise when I tried to prune it back out from between the floor boards of the rear deck. So, while most are smooth, be aware that isn't guaranteed!

thanks, actually I have tons of grass in my beds, and am gone to my son's house 3/4 days each week so may of my smaller roses will be moving to 20-22 inch terracotta pots on drip. Then I can add annuals to soil at base of each rose in the pot. I'll be giving many-not all- of my flower beds. that is a huge old Live Oak tree. 10+ years ago I measured the circumference 3 ft up from the ground, it measured 14.5 feet around.

that should be-- getting rid of many, but not all of my flower beds.