How Do Purple Flags Fight Climate Change?

How Do Purple Flags Fight Climate Change?

What we are learning now is that the presence of green growing plants is even more important to building a living soil than the presence of decomposing organic matter. By planting a mixed perennial meadow under our fruit trees instead of constantly disturbing the soil with weeding, we are adding much more carbon to our soil over time than we could by simply mulching. While getting rid of the oxalis weeds is great, getting rid of the carbon dioxide that is driving climate change is much more important.

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Why the Purple Flags?

Why the Purple Flags?

If you had walked through GFE in March five years ago and looked uphill into the orchard, you would have seen a solid sea of yellow flowers foaming around the trunks of our fruit trees. What’s a restorative garden team to do? Of course, as an organic garden where no pesticides have been used for over twenty five years, we didn’t consider spraying roundup on the oxalis. We made a long term plan to change the conditions in the orchard so that they no longer favored the oxalis.

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Yikes! Oxalis!

Yikes! Oxalis!

At GFE, our south orchard is full of Oxalis pes-caprae, otherwise known as sour grass. This horrible weed originated in South Africa in a climate so similar to ours that it has gone crazy in California, invading everywhere. It’s bright yellow flower and clover-like leaves can be found on roadsides, in restored or disturbed natural areas, parks and gardens. It is relentless and it never sleeps. Many a gardener has spent hours weeding this pest, only to come back a week later and find it fully re-established. So what can we do?

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To Prune or Not to Prune, That Is the Question

To Prune or Not to Prune, That Is the Question

During the summer months, this had been a butterfly garden, full of dozens of different pollinators. Now, with late fall turning into winter, it was time to cut back and shape the garden for next year's pleasure. One of the Verbenas needed to be moved out from under the shade thrown by a huge Salvia karwinskii. There was never a better day for a sharp pair of pruners.

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Fall Weed Strategies

Fall Weed Strategies

The new growing season also means an abundance of seedlings in the garden soil. In well-tended old gardens, many or most of these seedlings will be desirable plants, cool season annuals emerging from last year’s seeds. But just as reliable are the weedy seeds. Good gardening calls for an organized strategy to combat the new weed season.

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January Showers Bring January Flowers

January Showers Bring January Flowers

One of my favorite things about our climate is that even in January we get a new generation of bloom arriving in the garden. Some of the fresh January treats are familiar in old San Francisco gardens, such as the tall, sexy calla lilies with their lush curves, and the bright tree aloe, whose dramatic red-orange flowers support hummingbirds through this hungry time of year.

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A New Gardening Year

A New Gardening Year

In the final days of January, the buds were swelling on the purple plum trees that grace San Francisco streets. The tiny new moon heralded the Chinese New Year, marking the beginning of another growing season. By the time this newsletter reaches its readers, the plum trees will be in full bloom, as clouds of pink blossoms assert Mother Nature’s confidence, despite a dry winter in the watershed and in the economy.

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