Each type of roses requires different handling when you plant them and have different planting period in order to establish well. Plant bare-root roses just before or at the beginning of their dormant period, in late autumn or early winter. This way you lessen the shock of transplanting. In areas that suffer from bad winters it is best to wait until early spring to plant them. Plant bare-root roses as soon as possible after you bought them. If the weather is not suitable for planting or any other delay occur, heel them into a spare piece of ground, with the roots buried in a shallow trench or you could store them in a cool and frost-free place and keep the roots moist.
Container-grown roses may be planted at any time of the year as long as the weather is suitable for planting. Unlike bare-root roses, container-grown ones may be left outdoors in their containers for three weeks or even more while awaiting planting. Over this period they need to be kept properly watered. Even these roses are frost hardy, do not expose them to prolonged frost as the roots in the containers may suffer some damage in very cold conditions.
When you plant roses you should consider the correct spacing between them according to their growth habit. When planting bedding roses avoid placing them too close as over-close planting makes mulching, spraying and pruning more difficult and may create stagnant air conditions which will allow a rapid spread of mildew and black spot. A narrow, upright cultivar needs less space to grow healthy than a spreading cultivar. Plant rose bushes at 45-60 cm apart and about 30 cm from the edge of the rosebed. If you are underplanting some modern roses or very large species you should allow more space. Plant these roses at about 75-120 cm apart according to their final size and growth habit. For miniature roses you should consider a space of about 30 cm apart.
If you are going to plant a rose hedge you should consider the size and growth habit of the chosen cultivars. They will dictate the position of planting in forming your rose hedge. To obtain a uniformly dense growth you should plant tall hedging roses, which reach 1.2 m or more across, in a single line, 1-1.2 m apart, so that, when mature, the branches intermingle to form an effective screen; and modern bush roses in two rows, 45-60 cm apart, in a staggered formation.