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GENERAL REVEGETATION NOTES <br />~ Time of Seeding: Seeding would be most successful on this site if done between late <br />October and mid-March. The best time for seeding is probably between mid-November and <br />mid-February. Seeding at this time allows freeze-thaw cycles to bury the seed and takes <br />advantage of late winter snows. Spring seeding (mid-March to mid-April) also could be done, <br />but spring seeding often produces very vigorous germination. That would be appropriate for <br />the Lower Zone, but could produce excessive competition in the Upper Zone. An alternative <br />would be to seed the Upper Zone in winter and seed the Lower Zone in spring. <br />Determining the amount of seed.• The seed mixtures are calculated on a pounds of pure <br />live seed per acre basis. The first step is to determine the number of acres to be seeded with <br />each mixture. This can be estimated by measuring the maps. High accuracy in this number is <br />not necessary as the seeding process itself is not very accurate. Because of the inaccuracy in <br />the seeding process it is best to add about 10% to 15% to the amount of seed determined to be <br />right for the area to be seeded. <br />The seed mixture and the amount of pure live seed should be provided to the seed <br />supplier. They will adjust the figwes to take into account the germination and purity of their <br />seed stock. <br />Species substitutions.• Substitutions are permissible for the Base Mixture, but all other <br />mixtures should not be changed or species substituted without careful consideration of the <br />effects. The seed mixes to be used on the invasion areas have been carefully designed to allow <br />for good cover without producing excessive competition, at least under normal climatic <br />conditions. Substituting a more vigorous species for one that will slowly develop could, in <br />time, drastically reduce species diversity on the site. Although the cover would still be <br />excellent, much of the natural character that is developing on the site could be severely <br />damaged or lost. <br />Seeding: Seeding of most of the site will need to be done by hand using a cyclone <br />seeder carried over the shoulder. This should be done by people who are familiar with the site <br />and broadcast seeding methods so the right amount of seed is dispensed. inexperienced people <br />typically seed too heavily -they seed like they are trying to grow a lawn. <br />Mulches and fertilizers: Mulches and fertilizers can be used where the Base Mixture is <br />applied, but no mulch or fertilizer should be applied anywhere in the Upper Zone. Both <br />_,, <br />Deer Creek Quarry Rehabilitation June 1994 Page 12 <br />