Slow-release fertilizers can be applied at this time. We suggest Scott's Osmocote with minors. It's time to begin fertilizing with a well-balanced fertilizer. Also, this is the time to check carefully for disease and insects. This is a good time to apply magnesium and calcium to your bushes.
Essential elements are very important to the plants' growth.
May - Again, using a complete fertilizer, whether liquid or dry, is your choice. A complete fertilizer is one where all the ratios are the same. You should establish some sort of schedule, whether it is once a month, or twice a month. For example, on some of our maintenance accounts, on the first, we use 1 oz. By using this method, we can keep promoting new growth.