The tall grasses you may have seen growing in Gregg's Gardens recently are not weeds.
Winter rye grass was planted with the wildflower seeds to provide cover, to suppress cool season weed growth and to improve erosion control while the native vegetation becomes established. The grass is at or near its maximum height right now. In July the grass will begin to die off. It will not grow again next year.
Once dead, the grass will be mowed to allow sunlight to reach the growing native vegetation. Mowing when the grass has dried will minimize the cut vegetation left on native seedlings. Mowing live vegetation now would be detrimental to the native vegetation establishment by smothering the young plants.
We've received many comments about the rye grass these past couple of weeks. Most of it has been positive, but to those who do not like it, we ask for patience as it is a necessary step in creating a beautiful and healthy wildflower garden.
-- Dennis Blank, Gregg's Gardens