13-0-5 30% SCU .15 Dimension Weed Preemergent Lawn Fertilizer13 0 5 30% SCU . 15 Dimension Lawn Fertilizer Control annuals weeds like crabgrass with the 13 0 5 with Dimensions Lawn Fertilizer while also feeding grass. Dimension is a pre emergent weed control with some post emergent properties to help control the germination of unwanted annual weeds. Depending on application rate, grass seed cannot be planted for 3 4 months after application This fertilizer is 13% nitrogen, 0% phosphorus, and 5% potassium with