April 15 - May 31
Lawns should be green or turning green during this time under normal circumstances. A combination of nutrients such as liquid urea, Iron, and sulfur will be applied. This is done as a broadcast spray and combined with a sedge killing product. This should give growing grass a nice boost in color and jumpstart in growth. Sedge is a perennial weed that is not controlled by pre-emergent products. The success rate of controlling sedge seems to be higher by spraying it during this period while it is in its early growth stages. Dallisgrass, another stubborn perennial will also germinate now. An attempt will be made to control this during this time, but better results are seen when temperatures are much warmer. This is a great time for additional services such as aerations and application of additional soil and fertilizer nutrients. Inquiries for these services may be made through our website or by calling the office line. During this time, certain issues such as spring dead spot becomes noticeable. Spring dead spot is a disease that is active in the fall causing dead circles approximately 1 foot in diameter. Treatment for this is done in the fall as a preventative. If present this will have to repair over time throughout the growing season. Winter damage is also noticeable now and can vary from year to year. Factors that would affect this would be frigid temperatures, snow, and heavy rains. Damage from winter is more common on low lying areas, shade areas, and slopes.
Now is the time to start a regular mowing routine. Mowing weekly would be ideal but during this period 10–14-day intervals would suffice. The most important thing to remember when mowing is to not scalp and remove too much leaf surface. Grass should remain green after cutting and should be cut often enough to not remove more than 1/3 of the leaf surface. For a residential lawn, a cutting height of 2-3 inches is preferred. Depending on the weather irrigation might be required. 1 inch of irrigation every 7 days during the first half of the growing season is appropriate. Most of the time this is acquired by rainfall. If irrigation is needed, water once per week heavily in the early morning. This should total 1 inch of water. Placing an aluminum pie pan in your yard while running sprinklers is a great way to measure. Do not water in the evenings. This will keep the leaf surface wet over night and promote disease.