Union Square Tulips 2025. A temporary field of flowers will be installed in union square on “tulip day” sunday — to mark the 400th anniversary of dutch settlers. San francisco’s union square will transform on saturday for an annual event that bathes the area.

San francisco, ca — more than 100,000 tulips blanketed union square on saturday and residents were invited to pick bouquets for free. Enjoy this unique event by registering ahead of time.