Writing about the possible benefits of invasive plants, I had the fear that for most broad-leafed weeds it would be easy to find medicinal and other value, but that for grasses, I might have to pass. Interestingly, grasses have some good sides, too – even a such-maligned, horrible weed as crab grass.
Crab grass (also called “finger grass” because of its spiky inflorescences, or “fonio”, for African plants) are actually several Digitaria species – “Digitaria” again meaning “finger-like”.
Why is crab grass the proverbial weed? It turns out that “crabs” can’t take hold in a well-watered, well-fertilized lawn. But let that lawn be neglected, and develop some bald spots – that’s where the annual crab grass will move in, taking advantage.
A lawn usually consists of perennial grasses that stay green long into fall and often into winter. Crab grass would be fine to be intermingled, if it would not die by the end of summer and will leave a bald spot – especially if you pull it and do not immediately reseed with normal lawn seed. In that bald spot, its many, many seeds can take hold again. Crab grass’ trick is its long germination period: It might die early, but it can germinate basically all year, as long as there is no snow on the ground. Usually, a bald crab grass spot extends thus from season to season, always looking awful in the fall, showing your neighbors that you are a less-than-perfect gardener.
Remedy? Keep your grass healthy, well-fed, well-watered, well-limed, and reseed in fall and spring, so that crab grass seedlings have no chance.
So, what for is this invasive grass good? For cows and other ungulates like deer crab grass is as nutritious as any other grass; even more so, because of its high protein contents. Sub-Saharan Africa people eat the milled crab grass seeds in porridge and bread. The problem with crab grass is that it germinates and ripens its seed willfully throughout the year. Therefore it must be hand-harvested, defying large-scale cultivation. However, early settlers in America purposefully would till a spot in the spring so that crab grass could grow there, for the grazing of the animals later in the year.
Crab grass (like Bermuda grass) is a warm-weather grass. As such, it accumulates less sugar than a perennial grass - it does not intend to stay around for the winter, needing staying power through the winter. That makes crab grass better digestible especially to horses who might be quite sensitive to a high sugar and starch content – which bloats them, causing colic. So, as hay, crab grass is quite desirable.
Crab grass contains non-trivial amounts of magnesium, phosphorus and calcium – important for bone health, and some vitamin A, folate, and retinol; they might account for its use in eye health: Medicinally, crabgrass infusion is said to be helping against cataracts and feebleness. I probably won’t use it exactly for that purpose. But just knowing that crab grass is not poisonous will land it in my garden teas from now on. Read More
Blog: On Health. On Writing. On Life. On Everything.
Brown Fat And My Californian Pool
October 31, 2011
The experiment is still on: How long into the winter will I succeed to keep up my daily twenty-one laps in the pool?
So far, so good. The water is much colder now, but the days have been sunny and friendly – the fog lifted while we were at the East Coast.
Truthfully, lately it has been harder to face the pool: I am still battling a minor cold, and every day I have to decide if it is prudent to swim with the cold, or if I should just snuggle up in a warm blanket. But the exhilarating feeling after my daily swim – I seem to be addicted to it. I look full of vigor. My posture definitely is straighter. I am building up muscles where I never had any – on my back and my arms. Plus, the tiny belly I had is getting smoother (not smaller).
On the negative side is my skin. No outright rash or itching yet, but I have the suspicion that my skin looks a bit older, notwithstanding the coconut oil I slab all over me after each bath.
For a few days, I had been getting extremely cold after each swim, and couldn’t get warm at all. If you ever read my water book, you know that staying cold after water exposure is not a good idea. But with my inborn stubbornness (which might just get worse with age …) and medical curiosity, I kept doing what I should not have done: go swimming. And got colder and colder. In spite of the knee bends, blankets and hot tea with fresh ginger. Two nights in a row, I didn’t get warm all night – certainly not a healthy state!
Until yesterday. Shortly after I went swimming, had taken my short cold shower to get rid of the chlorine, had done my exercise, had rolled up in my blanket and imbibed the tea, I got really warm. Even my hands felt tingling with warmth. This lasted all night, and is still going on. I suddenly had the feeling that, for the first time in my life, that I was getting on the warm side in life. Like, where my husband always is.
Looking around for an explanation, I stumbled onto brown fat. Brown fat gets activated by cold. Brown fat is supposed to be healthier than yellow fat that just stores superfluous calories. Babies have more brown fat because it protects them from hypothermia – a constant threat for newborns.
Brown fat is not so much fat but is related to muscles. Brown fat is brown from the mitochondria and their iron contents; mitochondria are tiny energy factories. Brown fat has also more blood vessels for better oxygenation and is metabolically more active than yellow fat – it actually burns calories instead just storing them.
So, by swimming in the cool pool, I must have tapped into my brown fat – I can’t come up with any other explanation. And did you know? Brown fat is implemented in weight loss. Yes! Brown fat can make you lose weight – IF you have enough brown fat.
Sebastian Kneipp, the father of the Kaltwasserkur (Cold Water Cure) is famous for jumping into the wintry Danube River to cure his tuberculosis. Later, he modified his approach because he observed that some weakened patients were not able to withstand the bitter cold he himself had applied to his body. One could say he watered down his original approach … I had always repeated what I had been taught: that too much cold might be hazardous to your health. Which still might be true for frail people.
But I might be onto something here … I will let you know how this will work out.
P.S. After today's laps, I have very warm hands. Read More
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Invasive Plants 3: Bamboo
October 14, 2011
One time, traveling in Hong Kong, we saw a bamboo outside our hotel room window grow about a foot per day. Amazing. The record for bamboos seem to be somewhere at a yard per day – which makes them the fastest growing plants on record.
Those were tall bamboos. At home, we grow smaller varieties – and always in a huge tub lowered into the soil. These things throw out side-shoots or culms, as they are called botanically, so fast – they would run over the yard in a few seasons if not properly grown in a pot. One stand in front of the entrance and greets the visitors.
Easier, of course, would be to not grow bamboo. But that is impossible. Because, for me, bamboo stands for beauty. They don’t flower (or only about every one hundred years or so); they don’t lure you with colorful berries. But their pointed leaves have a charm that I wouldn’t want to miss it from my garden. If you watched the movie “Crouching Tiger, Hidden Dragon” you know what I mean – the scene in the tops of swaying bamboos is unforgettable! When I drew my first bamboo leaf with black ink, I was hooked forever on Chinese brush painting – and the living plant, which we all – from humble student to great master – try to capture, is so much more beautiful. It is as if grace and dance have been captured in a plant.
Bamboo is not one single species – there are many, from little to very tall, mostly green, sometimes variegated – but all in the Poacea family – also called the “true” grass family. Their long stems barely taper which makes them perfect for building materials. In China one can see huge skyscrapers being built or renovated, and the scaffolding is all bamboo – many, many stories high – quite an astounding sight for western eyes! The light but tough wood makes furniture, tools and kitchen utensils. And last time I bought a pair of socks, I found they were made of 100 percent bamboo, made in China.
In Asia, bamboo is used for food and medicine; you certainly have eaten crispy bamboo shoots in a Chinese dish. In Chinese Traditional Medicine, bamboo is used against bacterial infections, especially in the lungs. But be cautious: There are so many different “bamboos”, and some are poisonous. But the genera Bambusa, Dendrocalamus and Phyllostachys are generally edible – but check before you put them in your mouth: As with mushroom, 99 percent is not good enough; you have to be sure 100 percent!
It is better to stick to the ones you can buy in the supermarket: They are those fast-growing shoots I described initially. Make sure they are fresh and white once peeled, not already brownish. Even the edible bamboos contain toxins (cyanides) that have to be destroyed by cooking – never eat them raw (as you also know never to eat any mushroom raw – not even those innocuous-looking button mushrooms; they are carcinogenic).
The nutritional value of bamboo? They are high in protein and dietary fiber, and contain zinc, iron, potassium, copper, manganese, vitamin C and many B vitamins: B1, B2, B3, B5, B6, B9 - plus flavonoids – anti-oxidants. Because of their very low fat contents (and no cholesterol to speak of), they are delicious in coconut milk, as sauce or curry.
Those bamboo shoots have a high silica content; they make good food and allegedly are good for all connective tissue, including skin, hair and nails, and feathers – in case you grow them ...
Silica is one of the many minerals you need for strong bone growth – there’s a reason why those bamboo trunk grow into the sky so rapidly (and you know already that calcium alone doesn’t do a thing for your bone). Silica is the main mineral in quartz, which is also used as a healing crystal. I have not quite made up my mind about healing stones, but I like the beauty of gems, and a clear quartz supposedly is for harmony and power – it might be only in the eye of the beholder, but that counts heavily for healing. I look at them a treasures Nature gives to us.
In TCM, bamboo is thought to help the immune system. I have never used it myself or on patients though. Bamboo also seems to prevent migraines.
Japanese and Chinese culture revere bamboo. In Chinese painting, Bamboo is the first of the Four Gentlemen, and stands for an upright, hardy character – not difficult to see why, if you find the green leaves still on the stem in the middle of winter and snow.
Invasive? Yes! But useful and beautiful! Read More