... to keep your plants going as the season progresses ,The fertilizer usually make as base fertilizer before you plant .There are some ... lawn ,for tomatoes ,photoes,roses ,dahlias ,chrysanthemums,or flowers,or before planting shrubs,or seasonal use in spring or in autumn ... 3. we also can make the organic and inorganic fertilizer ,which is put the NPK into the organic fertilizer .The contents of N P K ...