Housing and Development Newsletter To improve public safety and allow for new tree plantings, 40 dead redwoods, one dead coral tree, and numerous dead pittosporum trees will be removed. Further maintenance in the redwood grove will include updating the irrigation system and spreading mulch to improve water availability for the hundreds of mature redwoods originally planted in the 1930s. As part of the long-term maintenance plan for the grove, the city will also be planting about 75 young coastal redwoods and 25 incense cedars. In addition to the work planned for the redwood grove, some 40 trees along the eastern and southern perimeter of Stow Grove Park will be trimmed to remove dead branches and ivy.