Washington (CNN) President Donald Trump announced Wednesday that national parks and public lands will be reopening following coronavirus-related closures, but officials underscored that the reopenings will be gradual and tailored to states' varying levels of public health restrictions.

"We're starting to open our country again," Trump said during a White House tree planting ceremony marking Earth Day and Arbor Day. "Thanks to our significant progress against the invisible enemy, I'm pleased to announce that in line with my administration's guidelines for opening up America again, we will begin to reopen our national parks and public lands for the American people to enjoy."

Vice President Mike Pence said during the ceremony that the Trump administration would "work closely with governors" to reopen the parks and public lands, "so that the American people can enjoy the blessings of those extraordinary places."

Interior Secretary David Bernhardt tweeted following the announcement that the administration is "committed to working with governors and local public health officials to gradually reopen our National Parks in a safe manner for the American people to once again enjoy."

The National Parks Service also underscored in a statement to CNN on Thursday that the reopening of parks would be gradual and that they "will continue to work with state and local officials as these changes are implemented."

Read More