PT - JOURNAL ARTICLE AU - Thomas C McDonough AU - Donald J Regan AU - Andrew S Nelson TI - Propagation protocol for blue elderberry (<em>Sambucus nigra</em> L. ssp. <em>cerulea</em> (Raf.) Bolli) AID - 10.3368/npj.19.3.254 DP - 2018 Sep 21 TA - Native Plants Journal PG - 254--259 VI - 19 IP - 3 4099 - http://npj.uwpress.org/content/19/3/254.short 4100 - http://npj.uwpress.org/content/19/3/254.full SO - NATIVE PLANTS JOURNAL2018 Sep 21; 19 AB - We present our techniques for producing blue elderberry (Sambucus nigra L. ssp. cerulea (Raf.) Bolli [Adoxaceae]) from seeds at a container nursery in northern Idaho. By applying a gibberellic acid treatment combined with a cold, moist stratification we are able to re liably break seed dormancy and produce an annual crop of seedlings that are 30 cm (12 in) tall with a root collar diameter &gt; 4 mm (0.16 in).