Get your hydrangea shrubs and other garden plants in great shape for the growing season by applying Espoma Plant-tone organic fertilizer! This all-purpose fertilizer is ideal for application early in the spring and fall or for use once a month during the growing season. While applying fertilizer is not necessary, it can often provide plants with a boost when they are struggling to bloom. It’s made in the U.S. using solar power and is an all-organic granular fertilizer.