They should do fine. Some specialty roses are only available own root and they may live 100 years. None of this may matter to a newbie. I probably would not order from J & P anymore, but I started with mailorder there late childhood. Everyone has to start somewhere and you will feel your way along.

There are pros & cons to both - grafted roses have strong roots & the rose will take off more quickly than an own root rose. Plant them, see how they do & how you like them, and then adjust from there. And, enjoy them!

I have grown grafted roses for decades, and in my current home, all but two of my roses are grafted. They outperform and out bloom the two own root roses that I grow. For example, I have grown two Julia Child roses since 2006. I grow an own root Julia that is four years old. Its blooms are smaller and not as abundant as the grafted roses' blooms. I love all my grafted Austin roses, too. Diane

I just want to let you know that when you talk about grafted roses, there are many "different rootstock". You may already be aware of that, but when I started out it was not something I knew about. I bought roses that were grafted but the rootstock was on something that did not do well in my area.... I need to use roses that are either own root or rooted on fortuniana rootstock.... you will need something that will do well in you zone 7.... There are some that are made for that area, and others for colder zones..... but since I am not in either of those zones, I hope someone can help you pick the right rootstock for your area..... and this might be a moot point, because you may already know this, but I just wanted to share, because many of my roses grew backwards (meaning after I planted them in the ground they started to do poorer and poorer until they died) because I used the wrong rootstock.

Good luck

I wouldn't say grafted roses are a mistake, especially in your zone!

The main rootstocks used in the US are 'Dr. Huey', multiflora, or 'Fortuniana'. Fortuniana is cold sensitive, but nematode resistant and goes gangbusters in the South. Multiflora doesn't like alkaline soil, but as it's usually seed-grown is free of most rose viruses (more a concern for cold zones where winter is already enough of a hit on our roses) and is very cold-hardy. The good Doc is nigh-unkillable in most of the country which makes him a great rootstock but a real nuisance if he starts suckering or if you loose the graft. 'Huey' will likely be perfectly fine in your region, and that's what J&P most likely has your roses on.

You're also in a warm enough zone you shouldn't have to worry about deep planting to protect the graft like cold-zoners do. And even cold-zoners get grafted roses - some Old Garden Roses are notorious for suckering enough to eat entire flowerbeds with ease (ex. 'Charles de Mills') unless you keep the graft above ground.

I'm a cold-zoner, and I avoid grafted roses because I either have to bury them deep enough they go own-root anyway (and I'd eventually lose the 'oomph' the rootstock provides) or I have to plant with the bud union exposed to our harsh, yo-yo winters and risk loosing the graft and then having to deal with 'Dr. Huey' forever. Some roses need that 'oomph' to well in any zone. But they get bigger faster so you get to the 'more blooms' stage faster than most own-root plants do.

No one right answer for any zone, or any gardener - it all depends on your yard and what roses you want!