One of the most often asked questions I get is: When I’m planting a budded (or grafted) rose should I bury the bud union?
I don’t care where you live, what your climate is or what your neighbor says. Always bury the bud union on a grafted rose. Why? Two words.
This happens when winds coming blowing through your garden and the tops of your roses start whipping back and forth. Down at the base they are also affected by the winds, and if the bud union is too far out of the ground they start rocking down to their roots. This loosens the soil and could tear the smaller roots.
Loosening the soil means air could get down there and dry the roots out. Tearing small roots can impair the plant’s ability to take up nutrients and water. Worst case scenario the plant itself could completely tip over and rip out of the ground or break off.
Budded roses generally have a long stem between where the roots flare out and where the canes flare out. If you plant the bud union (where the canes flare out) above the ground then the only thing supporting that entire plant is that long stem. It’s too thin and can’t do it.
By burying the bud union, the area where the canes flare out is below the ground. So at soil level the plant has three, five or more canes to anchor it when those winds come howling.
And that prevents wind rock and potential damage to your roses.