PT - JOURNAL ARTICLE AU - David A Nelson TI - Evaluation of <em>Penstemon</em> as a host for <em>Castilleja</em> in garden or landscape AID - 10.2979/NPJ.2005.6.3.254 DP - 2005 Sep 21 TA - Native Plants Journal PG - 254--262 VI - 6 IP - 3 4099 - http://npj.uwpress.org/content/6/3/254.short 4100 - http://npj.uwpress.org/content/6/3/254.full SO - NATIVE PLANTS JOURNAL2005 Sep 21; 6 AB - Castilleja Mutis ex L.f. (Scrophulariaceae), or paintbrush, is seldom used in gardens or landscapes because of confusion about hosts and growing conditions. Pairing annual and perennial Castilleja with various Penstemon Schmidel (Scrophulariaceae) species, however, was shown to be successful over a 2-y period. The most effective host was P. strictus Benth., particularly with C. integra Gray and C. indivisa Engelm. Such pairings now allow horticulturalists a way to incorporate paintbrush into a variety of growing areas. For best results, the microenvironment may need to be balanced to satisfy the growth requirements of both plants.