This mix also provides roots with good drainage, plenty of air space and still retains needed moisture. A good rose mix should also be bulky enough to anchor roots without toppling. If planting a bare-root rose, form a small mound of moistened potting mix in the bottom of the pot Place the rose on the mound, fanning the roots out in a circle to cover it Add soil to fill in around the roots Level the rose so the crown is one to two inches below the rim of the pot Fill the pot with mix up to the rose's crown Water thoroughly but gently to settle the soil Watering Water thoroughly after planting. The ideal time to plant is in the late winter or early spring, while roses are dormant or semi-dormant. This gives them time to become established before the summer heat.
Pots can be heavy and hard to move after they are full of soil.
Work in or near the spot where your roses will rest. Cover the drainage hole in the pot with a square of window screen to help keep soil from washing out. Mulch with a one to two-inch layer of compost or bark to conserve moisture and keep weeds from sprouting in the container. Mulch also helps insulate roots from extreme weather. Depending upon its size, a rose may be top-heavy when it is first planted and require a stake for support in the container.