“Super grove” of saplings cloned from extra-large redwood trees planted in San Francisco park
A new "super grove" of endangered coast redwood trees has arisen in California, thanks to a nonprofit group that planted 75 saplings at a park in San Francisco.
Since their species is endangered, any new community of coast redwoods would be welcome news. Yet these 75 saplings are also newsworthy for another reason: They're all clones, born of DNA that conservationists retrieved from ancient redwood stumps. Now growing together at the Presidio of San Francisco, they carry on a valuable genetic legacy that dates back thousands of years.