I love the climate of the Bay Area and San Francisco in particular. It's easy and moderate but there's rich greenery all year round, often with blooms twelve months of the year.
Many of the plants here are familiar from the UK where I grew up. Like Nasturtia, for instance, which love it here. Roses, poppies, geraniums, they're all here too... and seemingly all year round.
Some plants which are common here are to me other-wordly, though, particularly succulents. Look at this crazy thing: