The best time to feed these and other woody shrubs is as soon as the ground thaws and can be worked in spring. If you use Espoma’s Holly-tone or Flower-tone youe could feed againg 8 to 10 weeks later. Feeding is pretty much done for the season by early summer except for annuals that can be fed as long as the weather is warm. Other than on the lawn, I don’t suggest fall feeding. Shrubs, trees and perennials need to wind down with the season and late feeding can stimulate fresh growth that is more easily damaged by frost. Your last feeding for the woody shrubs you mention should be no later than the end of June.