Shrub roses are a loose grouping of roses that includes old-fashioned varieties and new hybrids. Due to the large variety of roses that fall under the shrub rose category, there is a large variation in mature sizing between different cultivars. As you plan to plant shrub roses in a growing area, consider the landscape design you desire and the specific cultivars you will plant. Plan your shrub rose spacing according to your desires.
Determine the mature width of your shrub rose varieties by consulting the information that accompanies each shrub rose or inquiring when you purchase the plants. Generally, shrub roses range in width from 3 feet to 13 feet, with 4 to 6 feet being an average width for a mature shrub rose. Also, decide what landscape design you desire. If you want individual specimen shrubs, space the shrub roses just slightly further apart than the mature width of the rose bushes. If you desire a hedge of shrub roses, space the shrub roses closer together.
Measure along the ground with a tape measure to designate a planting plan according to the mature width and landscape design you determined in Step 1. Make a mark with the shovel at the point you will dig each hole.
Dig the holes for the shrub roses. Make each hole 1.5 to 2 times deeper and wider than the root system of each shrub rose. Amend the soil with one part compost or peat moss and four parts soil as you plant the shrub roses.