The length and overall health of the Pennington Annual Ryegrass Market Grass Seed will depend on soil factors such as NPK nutrients and soil ph. We would suggest before seeding to have a soil analysis done by the Master Gardener with the Cooperative Extension Office or with one of our Soil Testing Kits and Soil ph Kits.  A great resource for homeowners is the Master Gardener with the County Extension Office. This division of the local university is available for homeowners to assist with knowing the best time to treat for certain weed control, getting a soil analysis done, what active ingredient or product recommendation is best in that area and also the best time to apply a pre and post emergent for the best lawn care schedule. You can find your Master Gardener at this link : http://npic.orst.edu/mgamlr.htmlhttp://npic.orst.edu/mgamlr.html