Tenacity Herbicide can last in the soil up to 30 days if used as a broadcast pre emergent treatment, so you would need to wait at least 30 days after an application before putting in any new seeds.
When using
As long as the initial application of Tenacity Herbicide
When using Tenacity, foliage of treated weeds cease growth after application, then turn white (loss of chlorophyll) and death may take up to three weeks. A repeat application is required after two to three weeks for improved postemergence weed control.
Tenacity that has been mixed with water and a surfactant should be used within 24 hours of mixing and then discarded. If it is in its original container and stored away from extreme temperatures, it will have a three year shelf life unmixed.
Tenacity Herbicide is not labeled safe for use on Floratam species and is only for use on
Broadcast treatments would be recommended if you are needing to actually treat the entire lawn for pre-emergence, if you are only needing to treat small areas or use as a post emergent then you can spot treat. Consult your local Cooperative Extension Service for more specific applications timings for your local area. Their contact information can be found by clicking the link below.
http://www.ahs.org/gardening-resources/master-gardeners
http://www.csrees.usda.gov/index.html
There are certain products that are susceptible to problems with high pH balances in water. If a product label does not specifically address this issue it is because this particular product does not usually have any issues with pH. The product label for Tenacity does not list anything regarding pH levels.
Once mixed with water you should use the product within 24 hours.
Tenacity Herbicide is labeled to be applied and safe for Perennial Ryegrass.
We are not sure if
We see no reason why you cannot apply Weed Be Gone now.