This little apartment garden in our neighborhood is one of my favorite examples of an edible landscape. Its main, perhaps only, feature is an enormous chayote (Sechium edule) vine that snakes across the (north!) facade of the building.
If you’re interested in growing chayote, here’s an old Mother Earth News article.
I’ve got a backlog of random photos that, somehow, never made it into full blown blog posts. Here’s some of those pics starting with our modest passion fruit harvest. Beautiful flowers and tasty fruit.
Kelly accidentally planted some potatoes amongst her sweet potato patch. We got a few potatoes and some pretty potato flowers.
My friends Gloria and Steve, who own a small herd of goats, did a goat milk tasting at the Institute of Domestic Technology comparing their backyard milk against a couple of store bought goat milks and some cow milk. Guess what? Fresh goat milk from the backyard is delicious and does not taste “goaty”. Store bought goat milk just doesn’t compare, though the Summer Hill brand at Trader Joes is passable.
Lastly, two of my favorite things: cats and corded telephones.
Best wishes for a happy fall for all Root Simple readers.
How do I spend my Saturday mornings you ask? Answer: scanning the peer reviewed literature for articles about using human urine as a nitrogen source in the garden, i.e. taking a leak in the watering can. As we’re currently hosting some excellent classes at our house taught by Darren Butler, a big proponent of what he calls “pee-pee-ponics,” I thought I’d take a look at the science of urine use.
Urine offers a free and readily available (at least after a night of beer drinking) alternative to organic nitrogen fertilizers such as blood meal. We’ve got a perpetual nitrogen deficiency in our vegetable beds and I hate buying industrial ag sourced items like blood meal. Urine is a great alternative.
To use urine in the garden you’ve got to dilute it with water, at least ten to one. Straight urine will burn your plants. Thankfully we don’t worry about our sauerkraut taking on a urine flavor:
Use of Human Urine Fertilizer in Cultivation of Cabbage (Brassica oleracea)––Impacts on Chemical, Microbial, and Flavor Quality by Surendra K. Pradhan, Anne-Marja Nerg, Annalena Sjöblom, Jarmo K. Holopainen and Helvi Heinonen-Tanski
Human urine was used as a fertilizer in cabbage cultivation and compared with industrial fertilizer and nonfertilizer treatments. Urine achieved equal fertilizer value to industrial fertilizer when both were used at a dose of 180 kg N/ha. Growth, biomass, and levels of chloride were slightly higher in urine-fertilized cabbage than with industrial-fertilized cabbage but clearly differed from nonfertilized. Insect damage was lower in urine-fertilized than in industrial-fertilized plots but more extensive than in nonfertilized plots. Microbiological quality of urine-fertilized cabbage and sauerkraut made from the cabbage was similar to that in the other fertilized cabbages. Furthermore, the level of glucosinolates and the taste of sauerkrauts were similar in cabbages from all three fertilization treatments. Our results show that human urine could be used as a fertilizer for cabbage and does not pose any significant hygienic threats or leave any distinctive flavor in food products.
As the study above noted, too much nitrogen (from any source) can cause pest outbreaks. And we do need to be judicious in our urine application in alkaline soils such as here in Los Angeles as urine has a high pH:
From Human urine – Chemical composition and fertilizer use efficiency by H. Kirchmann and S. Pettersson:
Stored human urine had pH values of 8.9 and was composed of eight main ionic species (> 0.1 meq L–1), the cations Na, K, NH4, Ca and the anions, Cl, SO4, PO4 and HCO3. Nitrogen was mainly (> 90%) present as ammoniacal N, with ammonium bicarbonate being the dominant compound. Urea and urate decomposed during storage. Heavy metal concentrations in urine samples were low compared with other organic fertilizers, but copper, mercury, nickel and zinc were 10–500 times higher in urine than in precipitation and surface waters. In a pot experiment with15N labelled human urine, higher gaseous losses and lower crop uptake (barley) of urine N than of labelled ammonium nitrate were found. Phosphorus present in urine was utilized at a higher rate than soluble phosphate, showing that urine P is at least as available to crops as soluble P fertilizers.
With some common sense urine application (i.e. not too much), it clearly makes a good fertilizer:
Stored Human Urine Supplemented with Wood Ash as Fertilizer in Tomato (Solanum lycopersicum) Cultivation and Its Impacts on Fruit Yield and Quality by Surendra K. Pradhan, Jarmo K. Holopainen and Helvi Heinonen-Tanski:
This study evaluates the use of human urine and wood ash as fertilizers for tomato cultivation in a greenhouse. Tomatoes were cultivated in pots and treated with 135 kg of N/ha applied as mineral fertilizer, urine + ash, urine only, and control (no fertilization). The urine fertilized plants produced equal amounts of tomato fruits as mineral fertilized plants and 4.2 times more fruits than nonfertilized plants. The levels of lycopene were similar in tomato fruits from all fertilization treatments, but the amount of soluble sugars was lower and Cl− was higher in urine + ash fertilized tomato fruits. The β-carotene content was greater and the NO3− content was lower in urine fertilized tomato fruits. No enteric indicator microorganisms were detected in any tomato fruits. The results suggest that urine with/without wood ash can be used as a substitute for mineral fertilizer to increase the yields of tomato without posing any microbial or chemical risks.
So go forth and pee (and dilute!). You can also, of course, just pee on the compost pile.
Many thanks to the always useful Google Scholar, one of my favorite gardening resources.
If you live in a warm climate, okra is easy to grow and both beautiful and tasty. I spotted this variety growing at the Huntington Ranch: Burgundy Okra from Baker Creek Heirloom Seeds.The stems and seed pods are a deep and vibrant burgundy–a very stunning plant for your vegetable garden.
While not as striking, this year I grew Clemson Spineless okra from seeds I saved. And thanks to a tip (can’t remember where I heard this) I’m having an easier time harvesting the pods. One of the problems with a small patch of okra is that, initially, you get a sporadic harvest. And you’ve got to pick the pods before they get too big and tough. So I’ve been picking a few and day and tossing them in a bag in the freezer until I have enough to cook with.
As for cooking okra I leave the pods whole as I ve been told this reduces the sliminess some people find objectionable. And pile on the spices! My favorite recipe is this Iraqi stew called Bamia. Bamia and rice makes for the perfect late summer dinner.
Mrs. Homegrown here:
I just had to second this post–this is an outstanding, gorgeous plant, pretty enough to be purely ornamental. The picture above doesn’t sell it. Let’s just say that the second I saw it in the Huntington Ranch, I said, “We’re planting that next year.”
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| Everyday loaf on the left, “charity” loaf on the right. |
As we’ve noted in our books, part of the deal with this lifestyle is persevering through the inevitable disasters. Which means it’s time for a regular blog feature, the disaster roundup.
Loafing Around
I agreed to bake a few baguettes for a charity function this evening. Problem #1 is that I can’t do baguettes in my small oven so I decided to do a shorter batard. Problem #2: for some reason, despite the fact that I measure my ingredients carefully with a digital scale, my dough turned out extra moist. Anticipating that the batards would stick to the peel as I put them in the oven, I decided to make round loaves in proofing baskets instead. Problem #3: the dough stuck to the proofing baskets and I ended up with edible, but aesthetically unappealing, loaves.
Moral: the more important the event the more likely disaster will strike.
Squashed
I’ve blogged about it before, but my attempt to grow winter squash (Marina di Chioggia) ended in disaster. The squash vines took up the majority of one of my few vegetable beds. I got only two squash, one that was consumed by racoons and the other that never fully matured before the vine crapped out. The immature squash was still edible, but bland.
Moral: winter squash just ain’t space efficient. Next year I’ll tuck it around other plants and trees rather than have it hog up space in my intensively planted veggie beds.
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| Luscious compost tomatoes. |
Unintentional Gardening
I built a cold frame this spring so that I could get a head start on propagating my tomato seedlings. So guess which tomatoes did better: the ones I carefully propagated from seed and transplanted to richly amended vegetable beds, or the ones that sprouted randomly in compacted soil? You guessed it, the ones that grew on their own.
Moral: nature knows best when to start seeds and where to plant them than us homo sapiens. Maybe there is something to that permaculture thing . . .
Our Hameau de la Reine
This summer the garden generally looked like hell. It thrives during our mild winter and spring then gets baked by the merciless Southern California sun at just about the time I start slacking off on my planting duties. Then the New York Times shows up and wants to do a photo spread about a month after stuff has quit blooming. This is when I usually come running in the house to complain to Mrs. Homegrown that the garden, “does not look like Versailles.”
Moral: take a class from someone who knows what they are doing, which is exactly what I’m up to starting next month. I vow that the garden will look like Marie Antoinette’s fake peasant village (the Hameau de la Reine) by next year. Then again, I say that every summer.
Garden Follies
Thinking the garden needed some ornamentation and not wanting to go the garden gnome route, I thought it would be a good idea to cast some Platonic solids in concrete–don’t ask me why–these things, “just come to me.” Mrs. Homegrown (using her Master of Fine Art superpowers) viewed this project with considerable skepticism. I successfully cast a tetrahedron and dodecahedron and stained them with iron sulfate and proudly placed them in the garden. They kinda worked but I have to agree with Mrs. Homegrown’s assessment that the scale is off–they look like the miniature Stonehenge in Spinal Tap.
Moral: trust the MFA in your household even if that MFA was in conceptual art.
I could go on, but I’ve failed to document all of the disasters. Next, we’ll review what worked.
