Regional Growing Guide: So. California Coastal & Inland Valleys
From the sunny beaches of California to the blistering deserts of the Southwest, this region is marked by nearly year-round sunshine and little rain. Roses bloom from April through December in the more temperate parts, while they take a rest during August and September in the great deserts, where searing temperatures vary little between day and night. There, roses have two seasons: spring and fall, with peak blooming in April and October. Ample irrigation is key. Soils may be alkaline or sand: it's important to amend with plenty of organic matter. The best roses are heat tolerant, and tend to bear darker leaves and bloom in more intensely saturated colors.
Select a season: Spring Early Summer Late Summer Fall
Prepare for New Roses
Now that you've seen roses perform over the summer, consider which ones you want to replace or which new ones you want to add. Prepare the new planting holes by adding some organic matter and either manure or timed-release plant food. This will give transplants a good start this fall and nourish bare-root plants in January.
Propagate Roses from Cuttings
Fall is the perfect time to start roses from cuttings. Select blooming wood, remove the top flower and the bottom leaves, allowing a few leaves to remain to support the young plant. Cover cuttings with plastic to prevent moisture loss, and mist them daily. Place the cuttings in a bright location away from direct sunlight. When new growth starts, wait a few weeks before fertilizing with fish emulsion.
Allow Roses to Form Hips
By not cutting the faded flowers off and allowing rose hips to form, you will signal your plants to go dormant for the winter. Roses that are allowed to rest will be stronger plants. Migrating birds may eat the hips as they pass through the area.
Weed Under Rose Plants
Roses need every bit of air circulation they can get to prevent fungus disease. Remove weeds competing for water and nutrients around the roses.
No Room For Roses?
Roses grow well in containers if garden space is at a premium. Use a 16-inch pot to accommodate roots, and fill with a good grade of commercial potting soil.