Category Archives: drought tolerant

Coast Live Oak Update

It doesn’t take an oak seedling forever to turn into a tree. The 2 photos above are the same tree, the photo on the left was taken in  March of 2016.  The one on the right was taken March 24th 2020. The stake is 34 inches tall so the little tree grew from about 3 feet to over 7 feet in just 4 years.

I planted this little guy at the bottom of a weedy slope near my house and watered it monthly  during the dry summers and fall for only the first 2 years. It’s grown anywhere from 4 to 12 inches every spring since. An oak tree’s size will depend on where you plant it. The bottom of a hill where the rain drains should turn this tree into a giant.  This oak has got a very strong, deep root system, it’s easy to see by looking how at it’s trunk.
Coast Live Oaks generally grow the most in March after the winter rains. This photo shows 6-8 inches of growth this year, and it we’ve had a pretty dry winter. I’ve noticed sometimes this tree has more than one growth spurt a year.

Oaks are keystone trees, they’re so important for habitat restoration. A bushtit is already using its dense foliage to hide its nest. Coast Live Oaks support a diversity of insects, birds and mammals. They sequester much more carbon than non-natives. They stabilize soil on slopes, and can withstand fires and droughts.

And watching them grow is pretty amazing. Just don’t get in the way!

 

The 18th + Rhode Island Street Permaculture Garden In San Francisco

 

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Dominique Piccinino teaches kids about bugs at the 18th and Rhode Island Street Permaculture Garden.

I recently read in SF Gate that San Francisco has just taken the first step into giving landowners a tax incentive to letting their empty lots be used for agricultural and educational purposes. The bill still has to be approved by the Board of Supervisors but is expected to pass as early as mid-July. Only empty lots would be eligible and properties would have to remain undeveloped for a minimum of five years. The hope is the bill would be to prevent urban blight and increase green spaces. Lots could even be used for bees and livestock– think of the farming possibilities!

To see what can be done with an empty lot, I visited an amazing  permaculture garden at 18th and Rhode Island Streets on Potrero Hill. It got its start back in 2008 when the owner, Aaron Roland, read a story in the SF Chronicle about using vacant lots to grow food. The writer wrote about Kevin Bayuk who had found over a thousand vacant lots even in the dense city of San Francisco. His idea was to try to find owners willing to let their land be used for urban agriculture.  When Aaron read the story he contacted Kevin and offered the space to be grown for food.

Since then, the sloping property has become a community garden developed with the principles of permaculture with help by project developer David Cody, permaculture students and the community. A good history of the project can be read in The Potrero View. The design works with nature but faster: building up the soil and catching and retaining rainwater in swales. The lot doesn’t look like your typical  vegetable garden with rows of vegetables in square beds. Instead paths follow the contours of the hill with recycled concrete retaining walls The plots are planted heavily with fruit trees and many perennial vegetables  that require less water. I noticed dwarf varieties of fig trees, apple trees, plums, pears and more. The front of the garden has cob benches that overlook downtown San Francisco and the far end of the property has a greenhouse/shed made of recycled doors. The newest addition is a pond and fish.

The garden is open to anyone and the day I visited, Branch, an educational program for kids was having a summer camp there. Kids were learning about bugs, picking fruit and making sun tea. It’s a great way to get kids into nature and there’s still two weeks left of summer camp with Branch and spots are available. Look here for more info.

It goes to show you there’s plenty of potential in an empty lot. Visit the garden and find out how to get involved on their Facebook page.

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Kids work on artwork in a Branch summer camp at the 18th + Rhode Island Street Permaculture Garden in San Francisco.

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The front of the garden has cob benches overlooking the San Francisco skyline.

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Paths through the garden are mulched, beds have recycled concrete retaining walls.

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A greenhouse/shed made from recycled doors.

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