Last week, we watched as Donald Trump and Emmanuel Macron took Twin Peaks-reminiscent golden shovels in hand to plant a small tree together, a gift from Macron to his new B.F.F. Today, we learned the tree has vanished from the spot.

One small patch of yellowed grass is all that remains of the sapling, a Reuters photographer noticed on Saturday. The tree was a European sessile oak, taken from the site of the Battle of Belleau Wood, which took place in summer 1918 during World War I. It was brought over by Macron for his White House visit and was meant to symbolize the strength of Franco-American friendship.

Before we suspect any foul play, though, there may be a less troubling and more botanical reason for the tree’s departure. The French Huffington Post spoke to a source at Élyseé Palace, who told the publication that the tree was likely in quarantine, as it is not a native species and must go through U.S. customs checks. Not even the descendants of Great War-era oak trees can get special treatment. The U.S. Customs and Border Patrol Web site declares “certain plants and ANY plant parts intended for growing (propagative) require a foreign phytosanitary certificate in advance.”

It’s also better to plant oak trees in the fall, not the spring, so the gift may very well be back on the lawn in a few months.

According to the HuffPost’s source, the tree is doing very well. Wherever it is.