TREE WALK ... An arborist will lead a free tree walk through Barron Park on Saturday, Jan. 8, from 10 a.m. to noon. The meeting place is Cornelis Bol Park, near the intersection of Laguna Avenue and Laguna Court. The walk ends with a visit to the Bol Park donkeys. Information: www.canopy.org.
ROSE CARE ... Filoli, at 86 Canada Road, Woodside, is offering a couple of classes in its Rose Care Series on Wednesday, Jan. 12: "Pruning and Care: Climbers, Ramblers & Scramblers," from 10:30 a.m. to 12:30 p.m. and "Pruning and Care: Hybrid Tea Roses," from 1:30 to 3:30 p.m. Cost for each class is $40 for nonmembers, $35 for members. Information: 650-364-8300 or www.filoli.org.
CAMELLIA FAVES ... Nurseryman and hybridizer Tom Nuccio will talk about "Camellia Favorites: Old and New" at the San Francisco Peninsula Camellia Society meeting on Monday, Jan. 10, at 7 p.m., at the Veterans Memorial Senior Center, Redwood Room, 1455 Madison Ave., Redwood City. Nuccio will discuss rare and recently introduced camellias at the public meeting, which will be followed by a raffle and plant sale. Information: Linda Kancev at 650-574-1220.