As we approach the end of August we are starting to get people asking about overseeded turf. When can they overseed or when will out turf be ready? I know most of us are optimistic that the end of August should indicate the end of a hot summer but we’re still a long ways off. The month of September will typically see at least 10-15 days above 100 degrees and night time temperatures will still be in the low 80’s. The last thing you want to do to your lawn is cut the growing season a month short and pay for it in the spring by having weak turf.

For those of you who follow my blog monthly you know how important it is to have a minimum of 100 days of growth for your summer lawn without any competition from ryegrass. One thing you need to keep in mind with that statement is that even though many of us think all of the ryegrass has been eliminated by June, it is doubtful unless you chemically transitioned your lawn like most golf courses do. Today’s ryegrass varieties are so strong that it takes a few days with high temperatures and high humidity to completely remove them. Have you ever gone on vacation in the month of July with a perfect lawn and returned to a lawn rich in ugly brown hues? The humidity is the final straw for ryegrass so once it hits it will eliminate your grass stand overnight if you’re not treating it with a fungicide. Many of us will try and hold on to ryegrass under a shade tree as long as we can but once the monsoon’s arrive you can say goodbye to your pretty lawn. My point being that you really need to start your 100 day count around July 1st, not June 1st because the ryegrass sticks around a lot longer than you think.
Read the rest of this entry »

Comments Off on Transition and Overseeding