Friday, September 22, 2017

Edibility of Eleocharis acuta

According to the very interesting Australian publication 'Plants of  the Merri Merri' (1) the "tubers" of Eleocharis acuta are edible "raw, baked or ground into flour" which would be quite exciting as the well known related Water Chestnut (Eleocharis dulcis) is an edible tuber. But I can't find anything about this plant having tubers edible or otherwise, instead it only seems to have a creeping rhizome which I believe I have photographed the white tip of above.

My guess is this report, intended for the general reader not botanists, refers to this white rhizome tip which I find edible, the white part is soft without fibers, easily eaten. It tastes bland, starchy and innocuous, without the crunch or flavor of Water Chestnut. Tim Low reports "Aborigines ate the starch in the young underground stems" (2)  of the closely related Eleocharis sphacelata, this sounds like the same thing since a rhizome is a modified underground stem (3), I've not tried or examined Eleocharis sphacelata.

The rhizome tips I found were small and fairly sparse, they hardly seem worth it unless you have a lot of plants and time to harvest them, though the plant is particularly pleasing visually. I tried a New Zealand native of this plant, it is possible the rhizome is bigger in Australia but reports seem to be about the same, 1-2 mm in New Zealand ,1-3 mm in Australia. E sphacelata rhizomes sound more promising 10-15 cm, though I can't find any first-hand accounts of eating them.

Both Eleocharis acuta and Eleocharis sphacelata are native to New Zealand as well as Australia, but do not seem to have ever been reported as being eaten here in New Zealand.

(1) Plants of the Merri Merri. A Home Gardener's Guide to using Indigenous Plants in the Northern Suburbs of Melbourne. Editor Rebecca Wigney 1994
(2) Wild Foods Plants of Australia. Tim Low. 1988.

Wednesday, September 6, 2017


Beyond a certain threshold, the multiplication of commodities induces impotence, the incapacity to grow food, to sing or to build.    
-Ivan Illich. The Right to Useful Unemployment.             
Yes, temptations are getting more sophisticated, but so are the tools for resisting them. 
-Roy Baumeister & John Tierney. Willpower. Rediscovering the Greatest Human Strength. 

For the past four years I have been experimenting with findings from the recently burgeoning science of self control, also called willpower in popular writing and self-regulation in scientific texts. My main aim being to improve my self-reliance or "self-sufficiency" especially regarding my food garden. Overcoming my aversion to tedious, negative and lengthy tasks like weeding being the focus (I'm not bad at all aspects of gardening, I have around 200 little known edibles doing ok). 

The results have been encouraging though not exactly in the way I expected. Based on my experience I'd say self-control techniques are worth considering for anyone interested in homestead or community self-reliance, or at least those who are having difficulties. It is my observation many people interested in self-sufficiency struggle to put sufficient time and effort into their garden, though inadequate knowledge of gardening is also often part of the problem. Perhaps self-control techniques should even be seen as tools essential to ecologically sound communities and practice, just like alternative or intermediate technology. 

I'm sure having a personality more suited to creative and exploratory mental pursuits than repetitive physical tasks is part of the reason for my difficulty with tasks like weeding, fifteen years of learning to sit on my backside in the education system may also have something to do with it.  

But I place most of the blame on our industrial-consumer utopia where everything is (supposedly) done for you and you don't have to do anything for yourself. It is easier to buy food or eat out than grow it yourself (at least superficially in the short term). On top of this there is a barrage of other industrial products competing for our time and attention. These commodities and institutions, like TV,  IT or transport, tend to win against autonomous activities like gardening because their great power is highly addictive, whatever their actual or intended benefits may be. Finally there are numerous unintended stressful side effects of these industrial "fixes" (like crowded commuting or greater inequality) that increase the craving for another "fix" over autonomous activities (6.7.8.).

The following are self-control techniques and insights I found especially useful in the garden. I am not a qualified expert in self-control, for greater depth and more techniques please see the references:

1. Know your limits. The first thing to know about self-control is it is limited, we only have so much.  It is possible to increase your self-control capacity by using it, like exercising a muscle (1.2.), this seems to have given many the impression self-control can be increased enormously or even endlessly in anyone.  However, sustained exercise of self-control places considerable strain on the body, possibly weakening the immune system if we don't take significant breaks (2 ).  Overdoing willpower is also associated with "inhibition of emotional expression and authentic behavior"(4). Self-control to the complete exclusion of impulsivity would also mean eliminating the likes of creativity and sex, therefore probably causing the extinction of the human race. 

It may have partly been the choice of the term  "willpower" in popular books and some of their blurbs (requirements of canny publishers perhaps)  that allowed many people, including me, to assume self-control might be another source of seemingly limitless power like petrol, nuclear or the net. Or perhaps lots more power at our service is simply what we've come to expect of all "true" scientific progress (my favorite example being a prominent economist enthusiastically suggesting self-control might make the economy many many times more productive). Based on present evidence it is not like that "expectations should be modest" (3). It is however likely you can do more of what what really matters to you and less of the rubbish by understanding and focusing your limited willpower.

2. Know when it's running out. Not only is it limited, self-control can also easily be depleted by using it to fight temptation, stress and other mental exertion such as making decisions, even just trying to make decisions (1.2.). Interestingly you are unlikely to notice your self-control is being depleted unless you have learned to. The only indicator researchers eventually discovered is that likable things seem more likable and nasty things seem nastier when your self-control is running out (1). I find it fascinating to monitor myself getting more annoyed or besotted with things as I go about different activities.

3. Re-fuel. The most famous and easy way of restoring depleted self-control is eating, sugary food for a quick boost, much more healthy food like vegetables, nuts, fruit or meat are slower to act but have a more sustained effect (1.2.). The physiological basis of self-control has been found to be glucose, food appears to restore glucose levels depleted by exercising self-control or certain other mental exertion, this depletion process is called "ego depletion" (1). As usual with science this explanation is still being tested but from a practical perspective I find it works remarkably well, though my personal experience could be explained by the placebo effect. 

4. Order. Another tool I initially found hard to believe but now use constantly is tidiness. It has been found disorder or mess reduces self-control, order increases it (1). Sometimes disorder may be desirable, a bit of contemporary art on the weekend may help to loosen you up, but if you have a challenging task chaos will not help. I haven't come across an explanation for this, perhaps we use up a lot of mental energy trying to comprehend and find our way around mess and use up willpower keeping our cool. I've come to enjoy more tidiness in my home, I've also started making planting arrangements in the garden more monotonous, simple and orderly and I think this helps a lot, I also find it makes me feel good looking at it. Before I aimed for the avoidance of any pattern whatsoever in the garden to avoid regimentation but I think it made working harder and weeding and harvesting more messy and complicated.

5. Commune with nature. Possibly related to this is the finding that spending time with nature is good for self-control (2).  I find spending time with nature seems to be good for my self-control, definitely my sanity. That would be somewhat tame natural situations that are not dangerous or deadly presumably (9). Perhaps the great beauty of natural ecosystems is a higher form of order so helps restore self control, perhaps getting away from the problems of society and seeing there is much more amazing  stuff going on is another factor, I'm sure there are many.

6. Know your personality. Personality is a factor in self-control, some personality types have very high capacity for self-control, some very little, most are in the middle somewhere. Different personalities will be good at applying themselves to different activities and different self-control techniques will work for different personalities. Most psychologists now work with the five factor personality model (introversion-extroversion/ agreeableness-disagreeableness/ negative-positive emotionality/ open-closed minded/ high vs low conscientiousness). This model is not claimed to be completely perfect, some add the dark triad (psychopathy, narcissism, Machiavellianism) vs empathy and other parameters. The relationship between self-regulation and personality is discussed in the paper 'Self-Regulation and the Five-Factor Model of Personality Traits' (3) a fascinating academic text.

Online personality tests may be useful in determining which self-control techniques are appropriate. For those very low in conscientiousness most self-control techniques probably won't help, only external assistance such as peer pressure offers much hope. If you are very "open" like me you may need to find ways of adding variety to tasks to stick at them (3).  The possible combinations of personality traits is basically infinite so completely accurate predictions of what will work for you based on personality tests may never be possible, informed trial and error is necessary.

7. Framing is how you think about, look at or construe a task (5). There are many different ways of viewing the same task. This has been the single best technique for getting me weeding. I had a hunch I was unconsciously expecting  gardening to be completely pleasant and nice, a romantic view of gardening, I didn't like the fact that I was having to compete with or fight some plants.  So I simply said to myself "don't expect it to be pleasant or easy"... it worked, I was out there weeding, and it still works. 

There is however evidence this goes against the grain of my personality in a big way placing a lot of strain on my self-control. I have become grumpy and even clumsy after using it a lot, 
completely out of character, (though admittedly for forcing myself into far more difficult tasks (for me) like meetings and parties not weeding) now I try not to overdo it. 

8. Belief. Religious people usually show better self-control in experiments (1), most likely because they believe they are being watched by higher beings likely to reward or punish their actions, though they may also have greater social pressure and clearer moral codes than atheists. Ironically science may have made the West less civilized by shaking belief in God. However, a number of Asian culture seem to do without religion and show exceptional self control,  greater social pressure "loosing face" and an emphasis on humility may be their secret. For me Gaia is probably the main god that will reward or punish our actions as appropriate.

9. Humility. Egotism or very high self-esteem clearly reduces self-control to a potentially dangerous degree ( ( as with other threats to self-control, there is a time and place for limited egotism, in creativity or leadership for instance (10) although both these things are wildly overrated in the West at present in my opinion). Those presiding over social programs seem to have unintentionally promoted narcissism by trying to raise the self-esteem of the "underachieving" since the Sixties with disastrous consequences (1. 12. 13.). Similarly I suspect many businesses may have inadvertently ended up promoting narcissism because the impulsivity of narcissists makes them much easier to market to.

I suspect technological innovations giving us (at least the feeling and appearance of) ever more godlike powers  goes to our head, and this is difficult or impossible to notice or question because "everyone" is doing it. I suspect technological power like being able to exchange data with anyone around the world,  instantaneously with the slightest click makes me feel I'm way above mere mortal activities like gardening, certainly weeding! 

Those of us interested in saving the world through the likes of self-sufficiency are also in danger of believing we are morally perfect and superior, which in the end is just another form of egotism with the usual reduction in self-control.

Presumably the counter-balance to this is to promote humility as most, if not all, enduring traditional societies have done. I have not actually come across self-regulation research directly promoting humility, but the final technique (10, below) helped. (
Egotism is almost certainly an inescapable part of human nature. One might imagine it would be completely absent from an egalitarian hunter-gatherer society like the African !Kung people, but they "have evolved elaborate devices for puncturing the bubble of conceit and enforcing humility". Whether it's seeing oneself as very generous or very good at hunting they say "his pride will make him kill someone"(14). The difference seems to be we are increasingly encouraging arrogance as a virtue, calling it "self-esteem", they see it as an evil needing constant stamping out).    

10. Know and Avoid Self-Control Threats. The most useful technique overall for me has actually been essentially the same as the one young children used in the famous willpower experiment known as the marshmallow test (2). Children were left in a room with a marshmallow and told if they didn't eat the marshmallow they would get two later on. The children who succeeded did so by finding a way of not looking at the marshmallow, they did not stare straight at it and resist the temptation to eat it as one might imagine someone with strong willpower would be able to do.

I discovered, entirely by accident, that this worked for me when I decided to move my art studio to my home and stop commuting by buses to a studio I'd had for years on the other side of the city. So now I was at home most of the time; without effort or thought I was suddenly out in the garden working, busy with all manner of projects, even weeding.  

I think the city was like the marshmallow, as long as I was looking at it, experiencing its temptations, stressors and chaos, I was powerless, it was exhausting my willpower leaving me unable to garden. The interesting thing is I didn't realize going through the city was depleting my willpower because I liked going into town (and still do but less). The people and pigeons are fascinating, I find the general chaos and challenges of crowds entertaining and stimulating, up to a point, but disorder depletes willpower, it doesn't matter if you enjoy it or not. Walking past and through shops requires constant unconscious resisting of temptation which also depletes self-control (2), even if you love shopping. Traffic, inequality and expense would be more obvious negative stresses, at least for me.

It is interesting I was already using the marshmallow technique with my art studio, there was absolutely nothing to do there except art (I don't have a fancy phone). It did not surprise me that I  did less art at home, no doubt because of all the distractions. I'm sure doing art was also taking a lot of willpower, doing less also almost certainly made it easier for me to garden.

What struck me about this realization was how humbling it was, it was clear to me how limited my self control capacity was. I couldn't do multiple superhuman tasks as I had hoped, I had to make sacrifices, big sacrifices  in other areas to do what was most important to me. My ego was cut down to size and it felt right.

Ironically, although I now pull out weeds as soon as I see them as opposed to putting it off for weeks or even months, by which time they've become rampant, I decided in the end I was overrating weeding as a problem. The real benefit of delving into self control is I am spending more time in the garden doing a wide variety of things that mostly better suit my "open" personality such as obsessively trialing new species and approaches. 

I actually found that when I thoroughly removed my most common weed (Tradescantia fluminensis, notorious here)  from an area a fruit tree there died in a dry spell, it appears this "weed" was acting as a 'living mulch' holding in moisture. It also turns out to be edible ( 11) I now enjoy it often, as do some of my animals. This "weed" now seems quite valuable,  just needing to be cut down to size regularly. So particular willpower goals are not always right and may need to be adjusted, they may even be overly ambitious because of the rampant egotism of our age.

I am now very aware of the self-control threats in my home, the TV, computer, radio and stereo, possibly even coffee, books, privacy, security and comfort. I noticed I worked all day in the garden when my computer died recently but I still rushed out to buy another one the next day. These threats will be my next challenge, not to eliminate them but to reduce their power, at least during the day. I might even try turning off the power to the house for some of the day so I can do more gardening and more art. There must have been a time when homes were centers of self-control and not addiction.

Self-Control Science References. 
1. Willpower. Rediscovering the Greatest Human Strength . Roy Baumeister & John Tierney 2011
2. The Willpower Instinct. How Self-Control Works, Why It Matters, and What You Can Do To Get More of It. Kelly McGonigal. 2012
3. Self-Regulation and the Five factor Model of Personality Traits. Robert McCrae & Corinna Lockenhoff pp145-168. Handbook of Personality and Self-Regulation Edited by Rick H Hoyle 2014
4.Contantine Sedikides. Quoted Review. Handbook of Personality and Self-Regulation Editied by Rick H Hoyle 2014
5. Framing: How you see things affects you more than you know. Noam Shpancer. www. 2010.

Other References

6. The Fix. How Addiction is Taking Over Your World. Damian Thompson. 2012
7. Shadow Work. Ivan Illich. 1981.
8. Tools for Conviviality. Ivan Illich. 1973.
9. The Wooing of Earth. New Perspectives on Man's use of Nature. Rene Dubos. 1980.
10. Emotional Vampires. Dealing with People Who Drain You Dry. Albert Bernstein. 2001. (Bernstein states egotism is a major, but not the only, source of creativity).  
11. The Encyclopedia of Edible Plants of North America. Nature's Green Feast. Francois Couplan. 1998. 
12. The Narcissism Epidemic. Living in the Age of Entitlement. Jean Twenge &.K. Campbell. 2009.
13. Evil. Inside Human Violence and Cruelty. Roy Baumeister. 1997.
14. Poilitics, sexual and non-sexual, in an egalitarian society. Richard Lee. Politics and History in Band Societies. 1982. 

Other noted self-control books not referred to in text

Handbook of Self-regulation Ed K Vohs & R Baumeister 2011 (academic text)

How to Get Things Done  D Allen 2001 (popular)
Changepower! Meg Selig 2010 (general reader)
Making Habits, Breaking Habits J Dean 2013 (general reader)

Possibly the best research and writing on self-control is yet to come, worth keeping an eye out.    

Friday, August 18, 2017

Casana in Wellington

Casana (Cyphomandra casana) fruiting in a Wellington gully in New Zealand, as would probably be expected. The climate is temperate, with temperatures a few degrees below zero from time to time in this spot. I found it needs a very sheltered spot, this one gets direct sun about 1/3 of the day.  Fruit ripened in mid-late August (early spring).

The fruit is like passion fruit with a hint of pineapple and also tomato... perhaps as much a vegetable as a fruit. But my ones also have a sharp bitter taste at the top of the fruit where it meets the stem. There is always still a little green at the top of these fruits, even when they've fallen off the tree.  Perhaps they are not ripening fully due to insufficient sun or heat. The slightly odd solution seems to be to eat only the lower half of the fruit if the sharp flavor is not to your liking, the unripe green fruit is also suspected of being slightly toxic (1) which is not really a plus either.   

1. Discovering Fruit & Nuts. Susan Lyle 2006

Saturday, August 12, 2017

New Zealand Flax Reinforced Paper Bags instead of Plastic Bags?

The media has been giving a lot of attention to people advocating cutting down or eliminating plastic bag use when we go to the supermarket (in particular). The main problem I have with this is it implies going to the supermarket would somehow become ecologically sound if only we didn't use plastic bags. The only real solution to the environmental crisis, local food production that marginalizes transportation of people and goods does not get a mention. Of course not, why would the media bite the hand of food and transport advertisers (or taxpayers in the case of state media) that feed them... anyway that would be too much trouble, we're all too busy propping up the system we're addicted to.

Still I couldn't help thinking of New Zealand Flax (Phormium tenax, Phormim cookianum) as a substitute when hearing an expert explain how resistant to breakdown plastic is in the environment. There was once a commercial Flax fiber industry in New Zealand, mainly for rope production, but the product was considered inferior to sisal or manila because it swelled when wet and wore badly(1), still it will survive considerable exposure to water as evidenced by the fact that Maori made fishing nets 1000 meters long out of it. I used to tie stakes for plants with strips of flax torn straight from the plant, they lasted many months outside.

But perhaps this somewhat inferior quality is what we want with disposable bags, people could put them in compost or use directly as mulch in the garden. Probably paper bags reinforced with flax fiber for strength would be best. 

Flax can be grown in a wide range of conditions that might not be good for much else , Phormium cookianum grows on vertical coastal cliffs. 

There are probably a number of other "second-rate" fiber crops that would also decompose quickly. 

1. Encylopaedia of New Zealand Vol 1. 1966. pp 704-705


Saturday, April 29, 2017

Saffron grown on roof in wet temperate climate

Saffron flowering on a rooftop in Wellington, New Zealand.

I tried growing Saffron (Crocus sativus) on my roof after attempts to grow it in the ground and on a window sill failed (it grew fine but did not flower as is normal in areas with "poor summers" (1)). I thought putting it on the corrugated iron roof might work because the plant likes hot, dry conditions.

There would be a limit to how many heat loving plants one could put on a roof as they would prevent the corrugated iron roof from heating up by shading it, but exactly what that limit would be I don't know at this stage.

 Ref 1. Encyclopedia of Herbs & Their Uses. Deni Bown 1995 

Wednesday, April 5, 2017

Tomato fruiting (a bit) with little sunlight indoors

I was surprised this Tomato plant (Lycopersicon lycopersicum)  produced fruit that ripened in a mostly shady spot beside a window that only receives around two hours direct sunlight in late afternoon, there are also a lot of Passion Fruit vines growing outside over the window reducing light further.

However the plant only produced two fruit (of a small "cherry" variety). By contrast with plants beside more sunny windows the number was 10-15. I assume the plant has the genetic ability to recognize low light levels and produce less fruit accordingly.

Perhaps rotating hanging baskets between windows with good sunlight and those with little could be a way of maximizing yields.

Saturday, March 11, 2017

Karaka Berry Flesh Makes a Pungent Dip or Topping

I find the fried orange flesh of the berry of Karaka (Corynocarpus laevigatus)  makes a very pungent dip or pizza topping resembling a strong cheese, a real kick to it with what I find to be an almost "rude" quality also like that of strong cheese. Also the consistency is somewhat like cheese, not that I believe in one food pretending to be another, it never works, like a person trying to be someone else.

I collect berries from the foot path and gutter below trees in the suburbs, then wash them obviously. I try to select berries that have not started to ferment/rot but by the time I have prepared them this process has invariably begun to an extent. I assume this at least partly accounts for their powerful flavor, I also assume if they have just started to ferment or decay they are still safe to eat but have no expertise in this area, I noticed no odd effects at all after eating it several times.

I should probably mention here most people know the kernels or"seeds"of the berries are extremely poisonous unless properly prepared, even in historical times when they were a major food of Maori there were occasional poisonings, possibly from prepared kernels although this does not seem to be clear. As far as I can gather they are rarely used as food today. 

There has recently been some fascinating scientific research into methods of elimination of multiple toxins from kernels. It concluded no single method tried was sufficient for reduction to completely safe levels, suggesting further investigation into multiple approaches. At this stage science does not seem to offer a guaranteed safe way of preparing the kernel but it is hopefully edging closer. Seems a little ironic in modern times we don't know how to safely prepare what was once a staple in this country.  This study also notes some toxins were detected in the flesh of the berry, presumably at safe levels since there's never been a report of poisoning. (See : MacAskill, J. J. (2013). Quantification of Nitro-toxins in Karaka (Corynocarpus laevigatus) Drupes (Thesis, Master of Science (MSc)). University of Waikato, Hamilton, New Zealand. )