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planted aze Blue Flax, Rocky Mountain Penstemon, Palmer Penstemon, Blue Lupine, Gaillardia, <br />and Fleabane. <br />The first wildflower seeding in 1995 used a wide variety of species. Seeds were distributed in a <br />range of microenvironments that included planting in established grass communities as well as on <br />freshly distributed sod. A dry spell during the two prime months for germination resulted in <br />drought kill of a number of seedlings. Nonetheless, observations from the first wildflower <br />seeding that could be made included the following: <br />1. PLurting into established grass results in sparse success with regard to creating <br />showy patches of wildflower growth, but is successful enough to establish a <br />significant gain in species diversity. <br />2. Planting in freshly spread soil works far better, but only on sites where grass <br />growth is not expected to be extremely favorable, e.g. north facing slopes. <br />3. Many of the species thought to be capable of growing on the site do not do well <br />in any of the wide variety of environments encountered. This is probably due to <br />the specific habitat requirements for those species. (Heffner, 1998) <br />Two different planting methods were used in 1998. For the first method, wildflower seeds were <br />hand planted in hundreds of small "gazdens" where there were openings in the grass cover. The <br />soil was raked, the seeds planted on slopes with aspects other than north facing and then raked <br />agam. <br />The other method was to distribute seeds onto freshly spread topsoil. Blue Flax was distributed <br />over the entire area to be seeded, and Gaillazdia and Rocky Mountain and Palmer Penstemon <br />were distributed in lazge patches. Immediately after the wildflower seed was distributed, the <br />grass seed, primarily Blue Grama and various wheatgrasses, was distributed in a separate <br />operation. The seeding rate for the grass was about 50% of the normal rate to reduce competition <br />for the wildflowers. <br />As of this writing it is too early to determine what the long term results will be for the two <br />seeding methods. A vegetaticn survey was wnducted in the fall of 1998 and, generally, the early <br />results are what one would expect. Where the wildflower seeding rate was high, the wildflowers <br />were more abundant relative to the grass. Where the wildflower seeding rate was lower, the grass <br />is more abundant. In 1998 it was reported drat Rocky Mountain Penstemon and Blue Flax were <br />doing the best. It was also noted that where tall weeds dominate (Ragweed and Lambsquarters), <br />there was not much wildflower growth, even where wildflowers were heavily planted. Grass <br />growth in these areas was more evident. This suggests that wildflowers are not able to compete <br />with the vigorous growth of the weeds. A recommendation from the 1998 vegetation survey is <br />that the wildflower plantings should be on freshly distributed soils. The planting should be done <br />first in marked zones followed by grasses at a rate of about 50% of the normal rates. <br />Weed invasion in disturbed areas is always a concern. In the case of Queens Canyon the problem <br />was compounded because of the importing of soil and other organic material from a variety of <br />locations within the county. In particulaz, Canada Thistle, Spotted Knapweed and Diffuse <br />ICnapweed have become a problem. Based on the distribution of the Spotted Knapweed and the <br />Diffuse ICnapweed, it appears the Spotted Knapweed was introduced in topsoil and the Diffuse <br />ICnapweed via longdistance dispersal, most likely from vehicles. Canada Thistle appeazs to be <br />(12) <br />