My dad once had a tree rose, a bush grafted onto a two- to three-foot stem so it looked like a covered lollipop in bloom. But once it got cold, that tree rose, particularly the graft union, had to be ...

Hybrid teas, grandifloras, and floribundas are descended from roses native to regions that do not frost at all and are not naturally resistant to cold. The guarantee of a rose bush’s survival through ...

It is probably best to winterize your hybrid roses after you return from your vacation. Chicago Botanic Garden staff waits until there has been a hard freeze of around 18 degrees Fahrenheit or three ...