I agree with Tom, ....I wouldn't fertilize them now.........besides causing a "growth spurt" at the wrong time, most of you fertilizer $ will just leach away ,over the winter. The best time , IMHO, is as soon as new growth stars ,in the spring. A *small* side dressing, about 2 weeks after bloom is over will also do you some good. If you are growing Re's, they can stand a bigger "dose" at that 'post spring bloom" time.
