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<br />to retain moisture in the top 1 to 3 inches of soil and prevents <br />excessive seeding depths. <br />SEEDING TIME: The seeding time with the greatest success is a <br />dormant seeding for areas that cannot be irrigated. A dormant <br />seeding is defined as when the soil temperature is cool enough to <br />prevent seed germination until the following spring. Grass seed <br />starts germinating when the soil temperature reaches 40 to 42 <br />degrees F. The dormant seeding benefits from snowfall as well as <br />early spring rains and has the opportunity to become established <br />much earlier in the spring than spring seeding. <br />Spring can be successful if rainfall is above the historical <br />average. Historical weather data shows that the rainfall pattern <br />is fairly minimal through the spring months with June being hot and <br />dry. In most cases, very early spring seedings (March) are <br />difficult due to snow cover or wet conditions which prevents proper <br />seedbed preparation. If seeded in late spring, the seedlings <br />generally cannot become established adequately to withstand the <br />historically hot/dry month of June. <br />Late summer seedings (late July to mid August) have shown success <br />in some areas since August and September have historically been the <br />highest rainfall months. However, in other areas the late summer <br />seeding date has been marginal with regards to successful plant <br />establishment. In addition (depending on location), a freeze is <br />highly possible starting by mid September and could .severely injure <br />or kill young seedlings before they become well established. <br />Therefore, spring and late summer grass seedings are times that are <br />exposed to the greatest risks for adequate grass stand <br />establishment when supplemental water is not available. Dormant <br />grass seedings after the soil temperature has dropped and remains <br />below 40 degrees F has provided the most consistent results to <br />date. <br />attached map. <br />MLRA 35 -(generally less than 6000 ft elevation) <br />Dormant Season - November 1-30 <br />Spring Seeding - not recommended <br />Late Summer Seeding - not recommended <br />MLRA 34B (6000-7500 ft elevation) <br />Dormant Season - October 15 - November 15 <br />Spring Seeding (marginal) - April 1-30 <br />Late Summer Seeding - August 15 - September 1 <br />MLRA 48A&B (7500-9500 ft elevation) <br />Dormant Season - September 15 - October 15 <br />Spring Seeding - not recommended <br />Late Summer - August 1-31 <br />