I've never fertilized bush sages before. My own improved sandy soil is already too rich as it is. But the long hedge I planted in early May is in very barren sandy soil. Some of the plant types like Hot Lip, microphylla neurepia, and greggii Navaho Bright Red are growing and blooming well, but other types are still small and growing very slowly. Now that they are established should I consider giving them a light feeding of low number organic fertilizer or am I just being impatient? The hedge is in a rather prominent place with lots of traffic going by and I'd like it to look its best.