A new and distinctly salt and boron tolerant poplar tree cultivar named “RRR Yellow,” is particularly distinguishable by its ability to tolerate and grow in soil with high concentrations of salt, boron and selenium. The cultivar was originally discovered as a sport through stringent selection of cultivated poplar trees, and potentially from isolation of a single unique sapling or sport that exhibited high levels of salt and boron tolerance necessary for survival, and then propagated into the “RRR Yellow” cultivar.
