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Poppy Corners Farm

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Walnut Creek, California
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Walnut Creek, California

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Poppy Corners Farm

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Freezer Salsa

October 1, 2023 Elizabeth Boegel

I decided to make salsa with the rest of my school-garden-tomato-haul. I recently replanted our raised beds at home with winter crops, so the last of our summer pepper harvest was also used for this purpose along with our own garlic, and onions from a neighbor’s CSA share (she had so many onions that she begged me to take some!). I very roughly followed this recipe, omitting the cumin and using only hot peppers rather than a combination of hot and sweet.

Smell-o-vision would be good right about now

Since there are only two of us in the house at the moment, I don’t need to worry about having enough freezer space - there’s plenty of room. So instead of canning this salsa, I’ll just freeze it. The recipe reflects that, having less acid than usual, and I used jarred lime juice rather than fresh, and our own homemade apple cider vinegar, since I didn’t need to worry about food-safety-acidity-%. This made for a very casual salsa-making endeavor, especially with no water-bath canning to be done. I enjoyed the process a lot more, I must say!

I didn’t remove any of the pepper seeds or ribs, so this salsa has turned out a bit spicy! That’s ok - I’m the only wimp in the family, everyone else likes it that way. I used mostly 1/2 pint jars for this, so that we don’t have a huge jar of salsa sitting in the fridge for too long (and letting it go bad, therefore wasting it). They’re also the perfect size to share. Hooray for tomato season!

Tags seasonal recipes, tomatoes, peppers
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My Favorite Tomato Recipe

September 28, 2023 Elizabeth Boegel

Last year, one of my students gave us a new genius idea to ripen tomatoes. It was time to cut down the vines to make room for the winter garden, and she instructed us to hang the vines, fruits and all, on the fence that rings the school garden. There, they ripened slowly in the sun, and (extremely surprisingly) did not seem to attract any wildlife; in fact, we had tomatoes available through October. So, this year’s class did the same thing.

The last two days, the tomatoes have been ripening like crazy with a burst of late-season heat. So I picked two buckets-full to bring home and process. I decided to make a batch of roasted tomato sauce, and a batch of salsa (we have a lot of peppers in the home garden right now). This afternoon, I worked on the sauce. I know I’ve written about this sauce here before, but I have a lot of new subscribers and it’s worth sharing again. It’s extremely simple and delicious, and can be used on pasta, on fish or meat, as a base for shakshuka (just add some spicy peppers), or as a topping for grilled bread. I also like it on homemade pizza.

No exact amounts needed, just use what you have on hand. I make this with plenty of olive oil and sea salt, using tomatoes, garlic, and basil from the garden. Preheat your oven to 350-375 degrees (you want these to slow-roast for a longer time). Slick your sheet pan with olive oil. Roughly chop the tomatoes and put on the sheet pan. Chiffonade your basil (or just chop it, whatever) and sprinkle it on top of the tomatoes. Mince plenty of garlic and add that. Drizzle more olive oil on top of everything and salt generously. I tend to roast for about an hour, but you’ll want to check frequently - you don’t want the garlic to burn or the tomatoes to scorch - your mileage may vary. It’s a good idea to stir the mixture a couple of times during the baking process. You want your sauce to be well-roasted but still saucy and jammy. We tend to like it just like this, but you can blend it using an immersion blender if you want a smooth sauce. I always make enough to eat the night that I make it, but with plenty of extra to freeze in quart jars for deep winter.

Tags tomatoes, seasonal recipes
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Out the Window

September 14, 2023 Elizabeth Boegel

Each morning, I am lucky to have a half hour where I can sit and have my coffee and start my day, often with journaling or the newspaper. In warm months, I throw the doors wide open, letting the cool morning air inside. Even when it starts to get a little chilly at night (like now - autumn is on the way, no matter how warm the days feel!), I still like to open the doors and snuggle under one of the quilts Tom’s mom made for us, so many years ago. The cat often sits in my lap and keeps me warm.

I noticed this morning how often I gaze out the windows as I’m drinking my coffee, and what’s so great (and we are so privileged to have) is that outside every window, there is a view of the garden. We can see green from every part of the house, whether I’m sitting on the couch, washing dishes in the kitchen, getting in to bed at night, or hopping into the shower. What a blessing.

I remember reading an article years ago from A Way to Garden, in which the author, Margaret Roach, calls this Garden Design 101. “Look out the window if you want to make a garden,” she writes. After all, when we’re out in the garden, we’re often digging or hauling or planting and don’t really notice how lovely it is. Oh sure, we may have family dinner out there, or tea with friends, but those events are not daily and only in clement weather. Whereas sitting happens more often inside the house. That’s when we really notice the garden.

As I was sitting there this morning, I thought surely there must some research about the positive effects of these window views. And indeed, there is. The Center for the Built Environment at UC Berkeley has published a study titled ‘The impact of a view from a window on thermal comfort, emotion, and cognitive performance.’ In it, the authors state, “visual connection to nature has been demonstrated to have a positive impact on attention restoration, stress reduction, and overall health and well-being. Inside buildings, windows are the primary means of providing a connection to the outdoors, and nature views even through a window may have similar effects on the occupants.” The study concludes that people had an increase in positive emotions in rooms with a window view, which was no surprise. But working memory and concentration were also higher, and folks actually felt cooler, even though the study controlled for temperature.

Another study from the Royal College of Physicians in the UK titled, ‘Gardening for health,’ details all the ways that being in green spaces increases health outcomes for patients. We gardeners and hikers already know that being outdoors in nature is beneficial, but this article states that “several trials have revealed the beneficial effects on mood and mental health of simply observing nature.” They study concludes with “health professionals should try to influence the design of new buildings by insisting that there are views of outside nature from every patient and staff room, and by placing internal plants in atria, communal areas, surgeries, clinics, and staff rooms.”

It’s also been well-documented that plants can reduce both air and noise pollution from the surrounding areas, which is especially helpful in urban areas.

Green spaces in cities is an equity issue; studies show that as income rises, the amount of green space also rises. This just isn’t right. Everyone needs access to green space, and everyone deserves the health benefits that come from having it, and we need to do all we can to provide it.

I know that I’m lucky to have these views from my home, but I’m also among the fortunate few whose workplace also benefits from green views. My desk sits right next to our office back door, and as I work at my computer, I get a slice of the beauty. Now I can also bask in the knowledge that the view is improving my cognitive skills, too!

Tags urban agroecology
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Edible East Bay article

August 18, 2023 Elizabeth Boegel

Edible East Bay is a wonderful local magazine that celebrates everything “food” in the East Bay Area (and it’s free, although they do take subscriptions). Last fall, I was fortunate to engage Cheryl Koehler, the editor, as a guest lecturer for my ‘Bay Area Food Culture’ class at Merritt College. My students were enthralled; the magazine has a bit of a cult following among foodies, and many of them had her sign back issues that they had kept for years.

A few months afterward, a local writer contacted me, saying that Cheryl thought our program at the college would make an interesting piece for the magazine. The writer, Rachel Trachten, interviewed me and several of my students for the article. A former student, Kerstin Firmin, who was also my first garden intern at the college, was hired to take the photographs. I wasn’t really sure anything would come of it, but the fall issue of the magazine has just been released, and sure enough, there’s an article about the Urban Agroecology program at Merritt. I’m absolutely thrilled; mostly to read what the students have said and are doing out in the world, but also because it might be a good advertisement for the program, which is still new and finding its footing. I am very proud of our program and of my students, and am looking forward to beginning a new semester this coming Monday. I hope to build some momentum and excitement about our program and the certificates that our students can earn, which will help them find new careers in farming or food systems.

If you’re interested, you can read the article here. Many thanks to Cheryl, Rachel, and Kerstin for this honor.

Tags teaching, urban agroecology, urban farming
6 Comments

Climate Zones

August 7, 2023 Elizabeth Boegel

Poppy Corners in August (the South Side) - Walnut Creek

Environmental Center in August - Oakland

It’s a great privilege to work and farm two gardens; my own garden on my own home property, Poppy Corners, in Walnut Creek, and my school garden, behind the Environmental Center at Merritt College, in Oakland.

In some ways, these two gardens are very much the same. They were both conceived and begun by the same gardener - me. I have a certain gardening aesthetic, which you’ll find reflected in both spaces; I have a certain way of doing things that works well for me, and I use those methods in both gardens.

However, there are a lot of differences, too. I’ve been working in my home garden for nearly 19 years, while the school garden was started in January 2022. My home garden’s design, planting, and maintenance are largely done by me, with a little assist from Tom once in awhile, while the school garden is designed, planted, and maintained by a whole host of folks, mainly students, a new group of which arrives each semester. Each garden has been built using what materials could be found or purchased at the time, and the landscapes reflect that. The soils are different: In Walnut Creek, we have 100% clay, because this land was under water a long time ago; the school garden is on top of a hill which is uplifted volcanic matter that has greatly eroded, which gives it a rocky, sandy texture. (*Note - in both gardens I grow annual vegetables in soil that is brought in, because neither original soil is great for growing veg.) The goals for my home garden are to provide food for my family, habitat for wildlife, and beauty for the neighborhood. The goals for the school garden are to provide a safe learning space and a lovely place for students to gather; this forms community, which our program is determined to provide.

But another main difference between the two spaces is climate.

Walnut Creek is about 20 miles inland from San Francisco and its bay. It has mountains surrounding it to the east and west, while to the north and south are long valleys. Oakland is directly on the bay, about 10 miles east of San Francisco. Oakland runs from the flats in the west, up into the hills to the east; this divides the city in many negative ways, while also dividing it climatically. My school, as I mentioned, is in the hills.

Why does this matter, you might ask? We all have climate differences depending on where we live, but here in the Bay Area, we have far more differences than most, thanks to the influence of the San Francisco Bay and the Pacific Ocean. We call these ‘microclimates.’ I’ll get to those in a minute.

But first, this is the USDA Plant Hardiness Map. This map was developed primarily as a tool for farmers, but gardeners use it frequently as well. These zones are divided by the lowest temperatures rather than the highest; for instance you can see that the central northern part of our country gets quite cold in winter, while the southern part of the country stays warm (or at least temperate) in winter. If you look at this map, and the close-up below, it looks like the Bay Area (about a third of the way down the state from Oregon) is generally homogenous. That is, that the coldest temperatures in San Francisco are about the same as the coldest temperatures in Antioch. There are some slight differences, but it’s not markedly different. According to the USDA, Poppy Corners is in Zone 9b, which gets down to a low of 25 degrees, while the Environmental Center is in Zone 10a, which can get down to 30 degrees.

Not a lot of difference, according to the lowest temps.

Those lows are extreme examples, of course - they are what ‘might’ happen, while the lows over time are not nearly that low. I have found that wintertime in Walnut Creek includes a few nights under 30, while most of the time we are in the upper 30s to low 40s. In Oakland, the low rarely gets below 50, as is more usually around 55 at night.

The USDA doesn’t take in to account the high temperatures during the day, which are also quite different. For instance, summers at Poppy Corners generally involve regular daytime temps in the 90s, with many days over 100. Summers at the Environmental Center are much more temperate, and generally stay in the high 60s to the mid 70s.

Here’s another difference: The humidity in each place varies greatly. Walnut Creek rarely gets summer fog from the bay - we’re just too far inland and the fog has to make its way over the Berkeley hills to get to us. But we do tend to get ‘tule’ fog in winter, which is moisture creeping in from the Sacramento/San Joaquin river delta to our east. However, Oakland regularly gets fog in the summer, as it’s much closer to the bay. In fact there are many mornings when I arrive at work in the summer to find the path soaked by fog drip. And in winter, Oakland does not get the tule fog. All of these things determine what and how you grow plants, and the differences can get a little frustrating.

Long ago, it became clear that Bay Area gardeners needed some guidance; growing things in San Francisco was obviously not the same as growing them in San Jose, or Mill Valley, or Richmond, or Vacaville. Gardeners clamored for more specific zones, and in 1954, a local magazine called Sunset published a book called The Western Garden Book, which redefined the climate zones and in turn, local horticulture. The Western Garden Book was, and still is, considered the bible of western gardening. Many gardeners use solely the Sunset zones (17 of them across the west) to plan and plant their gardens.

The Sunset climate zones take in to account all of the things I mentioned above: Not just the wintertime low temps, but also the summertime highs, and the humidity, and even the elevation. On this map, you can see that my garden in Oakland is in zone 16, while my garden in Walnut Creek is in zone 14. The descriptions Sunset gives for each zone is great, but here’s what I think is the most salient point: The coastal climate of Oakland is dominated by the ocean weather about 85% of the time, and by inland weather about 15% of the time, while the inland valleys in Walnut Creek are the opposite.

On top of that, as an observant person, I have discovered that there are micro-climates within microclimates. Poppy Corners, being in the deep valley on the west side of Mount Diablo, tends to get even more extreme temperatures, because the air is trapped by the mountain. Our winter temps are lower, and our summer temps are higher, than other cities in zone 14. We know this because we have recorded it for several years on our weather station. Here’s another interesting and salient fact: In the Bay Area, it cools down at night. It very rarely stays warm, no matter how high the temperature gets during the day.

“Ok,” you might be asking, “so what does all this have to do with actual growing in each garden? What’s your point, Elizabeth?” Why am I obsessively pondering this climate-zone stuff?

Here’s why: Everything in the school garden grows better.

Now, the school garden is not as mature; the perennials haven’t been there as long, and haven’t had as much time to grow. The space is changing all the time, as we determine what the needs of our classes/desires of all the instructors are. These things are reflected in the appearance of the garden. But even still - I look at the vegetables and flowers and herbs and natives and fruit trees and I think, damn. Oakland’s got it going on.

This is counter-intuitive. You’d think that the higher heat of my inland garden would be better for summer veg, at least. Tomatoes and peppers like it hot, right? And you’d think that the inland winter chill would be better for fruit, right? And at one time, maybe that was true - maybe the differences wouldn’t have been so marked, 50 years ago. Just little things, little tweaks here and there, would help the gardeners in different zones to make subtle changes that gave them success.

But in our changing climate, we already know that the extremes are getting more extreme. In my Walnut Creek garden in the summer, I either have full sun which bakes everything to an absolute crisp, or I have partially shady conditions that sure, don’t burn the plants, but also don’t allow for maximum production. In the Oakland garden in the summer, there is full sun nearly all day - but the plants don’t burn, and the fruit and veg ripens spectacularly. Take this example of the tomatoes in each garden:

Poppy Corners - spindly and not a lot of fruits

Environmental Center - chubby and huge, and full of large as-of-yet-unripe fruits

Why is this? Here’s my theory: It’s all about the range of temperatures. In Walnut Creek, in the course of a year, we range from 25 degrees to 115. That’s not too different than many places in the United States. But, over the course of a summer day, we often range from 50 degrees to 100. A difference of 50 degrees is not unusual here. That’s a HUGE daily change. In Oakland? Over the course of a year, it ranges from about 40-80 degrees. Much less of a range than most places in the United States. And over the course of a summer day? Mainly about 65-75 degrees. Not a very large daily change.

And this, my friends, is the big difference in my two gardens. In a study on Elsevier called “Ambient Temperature Signalling in Plants,” the introduction states, “Plants are exposed to daily and seasonal fluctuations in temperature. Within the ‘ambient’ temperature range… temperature differences have large effects on plant growth and development, disease resistance pathways and the circadian clock without activating temperature stress pathways.”

Plants are adapted to yearly, monthly, daily, and hourly temperature ranges. What they are NOT adapted to is increased temperature stress. And it is extremely clear to me that we are experiencing increased temperature stress at Poppy Corners. What I could grow easily 15 years ago, or even 10 years ago, I cannot grow now. And for now, at least, Oakland’s extremes are mostly mitigated by the beautiful San Francisco Bay. THAT is why everything grows better at the Environmental Center. And it’s why we, as gardeners, have to be aware of what’s happening in our own plots in our own cities, and why we have to learn to adapt to how conditions are now, not how they were when we started.

Tags climate
2 Comments
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