Knock Out® Rose Tree Height:3-4 ft. From December until March

From December until March

then do not exceed this amount

especially when its multi-stalked

apply a 2- to 3-inch deep layer of mulch around the base of the Wintergreen Boxwood

it keeps its foliage year-round

Knock Out® Rose Tree Height:3-4 ft. From December until MarchKnock Out's Color + Carefree Growth in Tree Form Why Knock Out Rose Trees? Rich blooms in abundance with no maintenance needed: Knock Out Roses have set the standard for bloom color, size, and adaptability. Now, horticulturists have bred a tree with the same characteristics. The Knock Out Rose Tree has raised the bar for disease resistance and is as carefree as they come. Hardy and reliable, your rose tree will bloom from early spring to the first