King Charles III has appeared on a new episode of the podcast, Unearthed, with actress Cate Blanchett. The episode, recorded in July at Windsor Castle, aired on Sunday, October 19. The conversation focused on the king’s long-standing support for nature and his role as patron of Kew Gardens.
During the discussion, King Charles talked about his work in creating the Millennium Seed Bank, which opened in 2000. The project is part of the Royal Botanic Gardens in Kew, England. It is the world’s largest seed bank, helping to protect plant species and biodiversity around the world.
The king, now 76, spoke with Blanchett and Dr. Elinor Breman, a senior research leader in seed conservation. Blanchett, 56, serves as Kew’s ambassador for a nature reserve in Wakehurst, England. The conversation gave listeners a rare look into the king’s thoughts about protecting the natural world.
King Charles on his role in conservation

King Charles shared that his work with Kew began more than two decades ago. He explained that his first step was to save traditional crops and plants.
I started by rescuing all the heritage vegetables … and fruit and plants and everything,” he said. The effort later expanded into larger projects to preserve plant life for future generations.
He said he saw the Millennium Seed Bank as an essential project.
“I just felt it was critical to keep the balance always … because we may need them at a later stage, don’t throw them away,” the king explained. He added that the work was challenging, saying, “It was quite difficult.”
The Millennium Seed Bank has since stored 85 percent of the United Kingdom’s threatened plant species. According to the podcast, the current goal is to increase the diversity of the plants being collected. King Charles said he continues to support these efforts because he believes nature must be protected and restored.
A conversation about Windsor and the future
Blanchett asked the king about his work in the private gardens at Windsor Castle. He replied that caring for the area has become one of his main projects.
“I keep trying to provide homes for lots of these sorts of things,” he said, referring to the plants and trees he grows there.
Blanchett called it “a real labor of love,” to which the king responded, “Thanks, I’ve been making more beds, I’ve marked them all out … and more trees. Trying to keep them going is the problem.”
His comments showed his hands-on involvement in maintaining the gardens and his focus on sustainability.
The king’s interest in the environment will also be explored further in an upcoming Prime Video documentary titled Finding Harmony: A King’s Vision, set for release in early 2026. Announcing the project earlier this month, King Charles said,
“Nature is our sustainer — we are part of nature. Therefore, what we do to her, we do to ourselves.” He added that his lifelong mission has been to “restore balance to our planet which is under such stress.”
Read More: Why Are Police Investigating Prince Andrew’s Alleged Request About Virginia Giuffre?