Spring is a colorful time when the plants bloom and are putting their energies into ensuring the success of next generation. San Francisco Botanical Gardens has a large collection of plants to keep a Photographer with a macro lens happy for hours. Visiting the gardens early in the morning is rewarding when you can see the dew drops on the flowers which add a unique dimension to the flowers.
Another place to visit is the Conservatory of Flowers which is near Botanical Gardens in Golden Gate Park. It has a large collection of tropical flowers and I love their collection of Orchids and Pitcher Plants.
If you would like to visit these places, here is a link to the location.