Peaceful Valley Farm Supply has a website titled Groworganic.com offering everything from trees to bulbs to native plants to fruits and vegetables. They also have a forum and reference library for your planting questions. The company is located in Grass Valley California and has a retail location there.
I stumbled across Heirloom Seeds website today. They offer seeds for vegetables, flowers and herbs. Heirloom Seeds sells garden supplies, non-toxic pest control and books. They also have a garden tips page that's pretty interesting. One tip I really enjoyed: Grow your tomatoes upside down! ...no staking, no slugs, and diseases are reduced. I may just have to try that one.
Thanks to Andrew Stenning who contributed the photograph for our masthead