Miracle-Gro 1008591 Shake 'n Feed Continuous Release Rose Plant Food, 4.5-Pound (Slow Release Plant Fertilizer) Miracle-Gro shake'n feed rose plant food Takes the guesswork out of feeding; shakes on in minutes and feeds continuously for up to 3 months. Promotes vibrant, beautiful roses and strong root growth Fertilizer analysis: 9-18-9 Measures 16.7-Inches in length x 12.5-Inches in width x 11.5-Inches in height; weighs 4.5 pounds