As October begins the soil surface temperatures have begun dropping, they have been detected at below 70 degrees at night. This happens to be ideal for the growth of cool season grasses, but it is a sign that colder soil (and air) temperatures are on the way. New growth and turf recovery will significantly slow once temperatures have dropped to and below the 60 degree threshold. In the more northern climes, seeding of any species beside perennial rye-grasses is discouraged as of October 1st.
Cool weather decreases the ability of new seedlings to establish.
If you are still waiting on turf growth or recovery from disease or drought, the time for action is at hand, another two weeks will limit the amount of potential growth for the rest of the year. If little rain has fallen in your area during the month of September, irrigation may be a key factor in encouraging growth and recovery. Proper watering needs to take place now, before daytime temperatures get too cool.
Fall is a great time to fertilize your lawn, if the temperatures and conditions permit. Healthy, lush, green lawns may not require it, but if your grass is yellowing prematurely, endured stress from drought, pests or disease over the growing season, fertilization may be a way to ensure root preservation through the winter and good spring output. Your arborist can help decide whether fall fertilization is necessary, the proper fertilizer formulation and whether additional amendments would be beneficial for your turfgrass. If your turf continues to struggle following the fertilization, talk to your arborist about winterization applications, possible soil amendments, treatments or cultural measures you can take to aid in recovery and growth,
