"When I was just up there, she was chopping up plants with a machete on a wood block and adding it to the soil immediately," Eanes says. "I love seeing her because she's always wearing these crazy patterns with a great big hat. She's from another world."

Eanes actually met more than 70 urban farmers but couldn't include them all in the book, so she started a blog to continue the journey. Ultimately, she hopes the project will get people thinking about all the neat things they can grow in their own backyards or outdoor spaces, even if it's just a window ledge.

"The whole book is about being inspired and getting ideas," she says. "I just wanted this book to give some hope and show here's what you can do without a lot of money and it's really fun."

It's not too late to still take advantage of the Bay Area's 10-month growing season, says Birgitt Evans, an Alameda County master gardener spotlighted in Eanes' book and co-owner of Pollinate Farm & Garden in Oakland.

Between now and August, we can still plant many summer crops, such as zucchini, cucumber, beans, winter squash, basil, tomatoes (determinate tomatoes that take less time to produce), corn and all the root crops, including carrots, beets, parsnips and turnips, Evans says. In early August, she recommends starting seedlings for crops such as cauliflower, broccoli and kale, all of which can be transplanted into the ground in September.

Evans, a master gardener, recommends talking to neighbors to find out what grows well in your neighborhood. Photo credit: Lori Eanes — Evans recommends talking to neighbors to find out what grows well in your neighborhood. Photo credit: Lori Eanes

You don't have to have the ambition of an urban farmer to grow simple edibles for your table, Evans and Eanes say. We asked both, along with Heidi Kooy, a San Francisco urban farmer in "Backyard Roots," for advice to help people get started.

1. Start small

You don't need to invest a lot of money to get your garden off the ground. If you take on too much, you might get overwhelmed. Perhaps start with a couple quick wins, such as herbs and lettuces, before you begin experimenting and expanding.

2. Take advantage of your available light and soil

Pick the brightest spot in your outdoor space for most crops, but you can also take advantage of crops that grow well in partial sun, such as leafy greens. Kooy recommends doing an analysis of your soil to get an idea of any heavy metals that might be present. Build up the soil with compost mixed into the top soil before planting, or as a side dressing around crops already planted. Consider adding nitrogen and phosphorus fertilizers since most California soils are deficient in these nutrients, Evans says.

"Soil is the basis for everything in your garden," Evans says. "That soil is going to help you get healthy plants, and healthy plants will resist diseases much better than unhealthy plants."

3. Grow things you like to eat

Eanes grows snow peas, greens and tomatoes in her backyard -- all things she loves to to eat, therefore ensuring nothing goes to waste.

Eanes showing off tomatoes planted in her rooftop garden in Bernal Heights. Photo: Tilde Herrera — Eanes grows tomato plants on her rooftop garden in Bernal Heights.

"People are forever asking what they should plant," Evans says. "My answer is always: What do you like to eat? There's nothing sadder than growing something in your garden and have it end up in the compost pile. I say this from a personal experience."

4. Grow things that grow well in your area

Kooy knows she doesn't get much heat in her San Francisco backyard so she avoids tomatoes.

"I know I can grow kale, lettuce and peas like nobody's business," Kooy says.

Heidi Kooy tends to produce and livestock in her Excelsior district backyard farm in San Francisco. Photo: Lori Eanes

Evans recommends talking with your neighbors who already grow edibles to find out what works well in your area.

5. Work out how much you can eat

It sounds like common sense, but once you harvest your crops, you have to eat them, Eanes says. Work out how much of a crop you can eat and plan accordingly. Give away or trade what you can't consume.

"Crop swaps are becoming very popular," Evans says. "I don't have chickens in my yard, but I know a lady who's got 25 chickens, so I trade various things with her in exchange for eggs."

6. Just keep trying

Many people think they have brown thumbs, but everyone, even accomplished urban farmers, feel the brown thumb syndrome at some point.

"You have to realize that failure is inevitable for every gardener," Kooy says.

The biggest challenge for aspiring gardeners is the fear of failing, Evans says.

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Urban Farmers Offer 6 Tips for Turning Brown Thumbs Green