Saturday, April 18, 2015. Plant Sale 10:00 am-3:00 pm. Friends only sale 9:00-10:00 am. Friends of Regional Parks Botanic Garden memberships can be purchased at the door starting 8:30 am on April 18. (admission is free). Celebrate the Regional Parks Botanic Garden’s 75th anniversary on Wildcat Canyon Road (between Anza View Road and South Park Drive) near the Brazil Building in Tilden Regional Park in Berkeley. First 100 kids will receive free plant (annuals donated by Bob Case). Please bring boxes or a small wagon to carry your purchases home. Our Email : . Peek at the plant list posted on .