Maestro Rose Glo is the premier organic rose fertilizer on the market, with the highest nutrient content. Rose Glo contains a wide variety of high nutrient materials – including humates, feather meal, bone meal, worm castings, alfalfa meal, compost – for more colorful blooms, rich green foliage. Timing: Every 8-10 weeks, beginning March Packaging: 30 lb bag, [...] ...