A daunting one-third of plant species in the United States are at risk of extinction. This staggering figure includes the San Diego ambrosia, a tenacious little perennial herb that clings by its ...

Teri Silver / lawnlove.com San Diego is known for beautiful scenery, a stunning coastline, and professional sports teams, but "America's Finest City" has its share of attractive native plants, too.

Some of the world’s most exotic succulents and cacti will be on full display at Balboa Park this weekend. There will also be many plants for sale.