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} We said in last month's newsletter that choosing the right time to prune Arizona roses is difficult. Ideally, they should be pruned two weeks before the buds swell. Some gardeners simply"sense" when this is about to happen. (One St. David gardener judges it by when the mesquite trees begin to bud.). Jan 17, In the fall, take off about ⅓ of each branch that you cut so your rose bush can grow healthy and tall in the spring.
You can cut your rose bush down even more if you’d like to change its shape or height. Make sure to leave at least 6 inches (15 cm) of branches above the ground so that your rose bush can grow back%(4). Cut at a degree angle, about 1/4-inch above buds that face away from the center of the bush.
Your goal is to open up the center, so the plants get plenty of sunlight and good air circulation. Shrub roses can be pruned with electric hedge trimmers by trimming off about a third of the growth. Sep 21, Trim your roses between mid December and mid January, which is the ideal time if you live in Arizona. If you have shrub roses, floribunda’s, hybrid teas, or grandiflora roses, trim them back to knee height.
Do a light trim after September Trim off only approximately ¼ of the rose bush.