Our first round lawn treatment contains our special fertilizer blend to promote healthy spring growth, a pre-emergent weed barrier to prevent weed-seed emergence (including crabgrass and spurge) and post-emergent weed killer to control weeds which have already sprouted. This treatment will become active once it’s watered in. We realize most sprinkler systems are not turned on until as late as mid-April. Nightly frost and light precipitation will be enough to water in this treatment. We recommend waiting until daily temperatures reach 80 degrees before turning on your sprinkling system. Begin watering well one day each week until daytime temperatures reach 90 degrees, then increase watering to a good soaking twice each week. Infrequent, deep watering encourages deeper root growth which will make your lawn tougher and more drought tolerant this summer – saving you money!