2019 Landscape Calendar – Arizona
March
• Finalize your lawn care and plant healthcare programs
• Prune most evergreen trees and shrubs
• Last chance to prune citrus, ficus and other sun-sensitive trees
• Spray olive trees
April
• Adjust your irrigation timer
• Increase duration, not just frequency, of tree watering cycles
• Spray olive trees
• Fertilize and mulch trees
May
• Prune to help prevent damage in monsoon winds, especially eucalyptus and mesquite trees
• Trim date palms after May 15th
• 2nd application of citrus fertilizer
June
• Watch closely for signs of pests and diseases—schedule treatments as needed
• Adjust or install staking on young trees
• Plant and transplant palm trees in summer heat
• Prune queen palms after June 1st and Mexican fan palms after June 15th
July
• Prune California fan palms after July 15th
• Treat plants stressed by summer heat with ArborKelp®
August
• 3rd application of citrus fertilizer