The Modern Victory Garden

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Reducing Reliance On Fossil Fuels In The Garden

Posted on September 2, 2011 at 12:35 AM

My garden is not just a hobby.   I definitely enjoy it and find great pleasure in the time I spend in the garden, but I have a definite purpose to what I do.   To put it simply, the primary objective is to feed this household with all of our vegetable needs and as much of our fruit as is possible, and to do it in a fashion that is economical, significantly less reliant on fossil fuels, and produces food that is nutrient dense and of a quality surpassing that which I could acquire even from local suppliers.   The challenge is to do this in my “spare” time and within the limiting factors of my property and location.   Specifically, tall trees surround our property so only a portion of our land receives adequate sun exposure for most vegetables.   In addition, I live in a coastal/maritime climate that is cool and frequently cloudy.   The combination of these two factors means that most vegetables grow more slowly here than they usually do in other areas that receive more sun exposure and warmth.   On the plus side though, our mild winters allow us to grow and harvest frost-hardy crops virtually year-round and our abundant rainfall through much of the year means that irrigation efforts are generally minimal and mostly confined to the brief dry period we get in late summer (Mid July through September).   

                                             

Since I garden with purpose, I find it useful to periodically take stock on how I am doing.   Reflecting on what is working (and what is not) helps me to make useful adjustments and often challenges me to increase my efforts in certain areas.   I have been thinking about a couple of topics lately but one in particular has been occupying my focus more than others – that being the goal of achieving greater independence from fossil fuels in the food production garden.  

                   

The abundance of fossil fuels is declining and demand globally continues to climb.   As a result, everything made with oil has been (and will continue to) cost more.   Many things in my garden are products of oil – the PVC pipe I use for grow tunnel supports and the plastic sheeting that I drape over them, the hose I use to water my garden with, and even the waterproof gloves I love to wear in the garden – all are examples of how fossil fuels are present in my garden.   I know I will not erase oil from my life or my garden, but I do try to consciously make decisions to keep my fossil fuel dependence as low as I can practically make it.   To the extent I purchase an oil based product, I want it to be something that will be durable and long lasting as opposed to a repetitive input to the garden production system.   Making those kinds of decisions and efforts translate into economic savings and ultimately a more sustainable food production garden.    

 

The things I think I am doing reasonably well at to keep my fossil fuel dependence minimized in the garden include:

  • I almost entirely use manual tools in my garden.   The tools I regularly use include a sturdy and well-engineered broad fork (for aerating and loosening the soil), a shovel, garden spade, garden fork, pitchfork, a hoe, a rake, a three-pronged cultivator, and a scuffle hoe.   I have acquired over the years some really well made tools and I take good care of them.
  • I don’t use chemical fertilizers that come from fossil fuels and I don’t use oil based pesticides or herbicides in my garden either.
  • I reuse and recycle garden pots and planters.   My friends and co-workers often bring me pots to reuse such that I am actually heavy on inventory of them at the moment.   Occasionally my supply gets depleted but I have found that all I have to do is mention I could use some and people start bring them to me in great number.
  • I use my PVC hoops, plastic sheeting, and bird netting over and over again.   When not in use, I carefully store them away to keep them from unnecessary sun exposure that causes deterioration.

Things I need to improve on (or have recently started changing) include:

  • I still use a gas powered weed whacker about four times a year to clean up and mow down the weeds and grass in the garden walkways.   It’s really the last vestige of gas powered tools left in my garden tool arsenal that gets regular use.   The amount of walkway area makes it rather impractical (and expensive) to try and put down weed barriers and mulches.   Mowing and trimming truly is the simplest and least fussy option with my raised boxed edged beds and larger garden size.   Consequently, I am planning to look into purchasing a narrow (small) push reel mower to keep the main walkway areas mowed down and then when my current gas powered trimmer finally dies (as they always eventually do) I will purchase an electric trimmer to use on a more limited basis to trim up against the edges of the beds periodically.   I need to learn how to properly sharpen the blade of a reel type mower though if I go this route.   A knowledge and skill I currently do not have.
  • I use plastic starter cell packs to start seeds in.   I rinse and reuse them a few times, but they are thin plastic, which cracks easily, and often I only get two uses out of them before they must be discarded.   About a month ago, I purchased a basic soil block maker and am intending to begin using it with my next seed starting efforts.   I plan to just repot the seedlings into larger recycled pots  so I did not purchase anything but a basic medium sized block maker (cost about $35).   I have a learning curve ahead of me with this, but I think it will be ultimately more economical and certainly less resource wasteful.
  • I need to work harder at keeping my purchased and transported inputs for the garden as minimal as possible and to find local (preferably free!) sources for items I do need.   Less packaging and less transportation means less fossil fuel dependence.   Food crops are generally heavy feeders and deplete the soil if a replenishment program is not constantly employed.   Compost is a great amendment but rarely of high enough quality to provide all that food crops need nutritionally without the addition of other fertilizers.   I periodically remineralize the garden soil with the applications of rock minerals which provides slow release phosphorus and potassium, but the garden still requires applications of nitrogen sources on a regular basis.  Recognizing this, I am going to begin a separate compost bin operation to gather up pure (not mixed with bedding) chicken poop from my hens and try and create a more concentrated composted chicken manure product and to do it in such a way that I don’t lose too much nitrogen via leaching and off gassing.   That will require using a more closed container approach for this particular composting.   Not sure what I will repurpose for that project, but I am on the hunt for something that will serve the purpose. 

I have other topics that I have been thinking about recently, but I will save them for some future blog post.   Do you think about this topic in the context of your vegetable garden and do you have things you are working on as a consequence?  

        

Laura

kitsapfreedomgardener

Categories: Garden Thoughts, Garden Economics, Organic

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15 Comments

Reply Ali
09:49 AM on September 02, 2011 
Great topic.

RE the weed string trimmer, we have a rechargeable one from Black & Decker which has been great. The biggest challenge is reloading the string, but Dan found some widget to help with that.

RE the soil block maker. I found it great for starting large quantities of seeds with a couple of exceptions: labeling and succession starts. I'll do a post soon about my experience.
Reply Mike
11:55 AM on September 02, 2011 
This is a tough one for me and is often on my mind because I do use a lot of plastic sheeting to cover plants during the cold months. I will use the plastic until it is literally falling apart (6 - 8 years with the help of some duct tape) but would love to come up with a more environmentally friendly and sustainable solution to this.
Reply katy
03:42 PM on September 02, 2011 
how has your worm composting been going? I haven't heard about it since its installment...
LOVE your blog. started at the beginning & have read it all the way through. attempting to start my own year round garden in the southeast this year :)
Reply Mike R
06:51 PM on September 02, 2011 
Good for you. Great post and everyone should think about this. The act of growing vegetables in your yard is itself a big step to reduce the fuel used to get food to consumer. It doesn't require much fuel to mail seeds compared to that needed to ship vegetables.

Our food system is unsustainable. Before WW2 a calorie of fuel was needed to produce 2 1/2 calories of food. Now it takes 10 calories of fossil fuel (fossil sunlight) to produce one calorie of food. That is insane and cannot be sustained.

Nitrogen is probably the most difficult nutrient input, and synthesis of nitrogen fertilizer uses a lot of energy. It should be (theoretically) possible to keep other minerals in a closed loop that one controls, and trees and other deep rooted plants can pull up minerals from deep beneath the soil. Nitrogen goes through many chemical forms and the nitrogen cycle works in soil, water and air (80% N2) so much is lost. From what I've read, when organic matter decomposes much of the nitrogen is locked up in the cells of microorganisms. Further decomposition with air may release much of this available nitrogen as the organisms die. The important thing is that nitrogen inputs are timed with when plants are growing fast. Sorry to go tech on you but can't help it :)
Reply kitsapfreedomgardener
10:49 PM on September 02, 2011 
Ali - When the time comes for the replacement of the weed whacker I will be sure to look at the Black & Decker rechargeable model. On the soil block maker, I have been concerned about labeling and watering the seedlings. I am sure I will figure it all out - lots of folks out there that use them regularly that I can learn from.

Mike - The plastic in the garden is my last hold out. I just try to make maximum use (and reuse) of it rather than ban it entirely from the garden. I guess if a day comes where it is just too expensive, and everything is worn out... I will have to come up with other options (like large banks of cold frames using repurposed glass).

katy - I need to do an update on the worm composting because they are doing marvelously and I am just about ready to harvest my first batch of worm castings from it. They are not very photogenic (rotten food with red worms wriggling about in it is not very pleasing to the eye!) but they are doing a great job and thriving. You are a brave soul going back that far in time to start from the beginning! The blog is officially 3 years old as of about 3 days ago so that is alot of posts to have read through and I know the conversion the host site did some years back left the earliest posts with some rather weird formatting - readable but a bit whacky! Glad you enjoyed it though and my hat is off to you for being such a devoted reader. :D

Mike R - I am a garden geek so I was with you on all the points you were hitting on! LOL! I think my pure chicken manure compost may be my best homegrown solution to producing a higher nitrogen fertilizer to augment more basic composts and amendments for heavier feeders - like corn, celery, broccoli, etc.
Reply Toni@backyardfeast
12:16 AM on September 03, 2011 
Great post; this is something I'm always thinking about. Unfortunately, I regularly come to the conclusion you do, that I'm not sure it would even be possible to eliminate plastics and other oil products completely from the garden--at least in the way I garden today. Apparently in the old days, they used to use cotton sheets and/or newsprint to cover tender crops, and of course, glass cold frames and cloches. And I know there are more creative ways I could get around my heat mats for starting seeds in the winter--haven't taken the plunge yet on the grow lights...

I forayed into soil blocks this year--they are AWESOME! I'll never go back to seed trays. I'll have to post on that. :)

And I'll really look forward to reading more about the chicken-manure concentrated nitrogen. I know in these parts seaweed, manure, and sawdust/leaves/straw are popular fertilizers/winter mulches. But my stumbling block is lime, because of our highly acidic PNW soils. Any thoughts on that element? Of course, at the moment, I'm digging our crab shells into the garden beds, so that's one possible solution. :)

Thanks for the thought-provoking post!
Reply kitsapfreedomgardener
12:06 PM on September 04, 2011 
Toni - Please do post about the soil blocks and how you use them. I always learn alot when I read other's experiences with them and know I have a learning curve ahead of me on this. On the lime issue - another alternative but one that must be used sparingly - is wood ash and biochar It also raises ph and adds bio char and other elements to the soil. It is powerful stuff though and can be easily overdone.
Reply Kimberly
03:02 PM on September 04, 2011 
I'll be watching for your composting solutions, as well. We've added 4 ducks and 2 dwarf goats to the chaos here, and while I'm excited to have that much more manure for the garden and "close the loop" a little more, we're wildly researching the best composting infrastructure to head for.
Reply kitsapfreedomgardener
12:52 PM on September 05, 2011 
Kimberly - Having livestock to produce manures is a great way to go. I introduced a worm bin in my composting regimen this year and should be harvesting the first worm castings from it today in fact. I hope that my regular composting, the worm bin, plus some dedicated pure chicken poop composting will provide me with a better arsenal of soil amendments and fertilizers than I had at my disposal before. I still need to find a plentiful but local (and hopefully cheap) source of bulk natural fertilizer components because the size of my garden demands a fairly significant volume of amendments and fertilizer applications in a year.
Reply foodgardenkitchen
06:28 PM on September 05, 2011 
Great post giving "food for thought."

Of course, as with most things, there's always room for improvement but, as I know you know, your impact on Earth are far less than the average Joe-schmoo American just by virtue of the fact you *have* a garden and you strive for low fossil fuel usage (e.g.: you're cognizant of the impacts of your choices).

I suppose I kind of feel that things got manufactured for a reason, not necessarily just to make money. It's more effective to use plastic sheeting or remay than it is to use cotton cloth or newspapers. If instead of using PVC piping, you used bamboo or cut down trees to make a makeshift structure, those too have their own impacts.

I guess it's a matter of striving to do what you can without resorting to living in a mud hut in the dark because there's no electricity and the bees didn't produce enough was for candles that year. It's all about striking a balance...
Reply kitsapfreedomgardener
08:33 AM on September 06, 2011 
foodgardenkitchen - I have come to the conclusion that the hard structures that I use that are petroleum based are not as concerning as the steady consumptive inputs like running gasoline powered tools and using fertilizers made from petroleum etc. I try to not be wasteful with the items I do use - making them last for as long as is possible to get maximum value out of the resources consumed.
Reply Dave
09:16 PM on September 10, 2011 
As far as the weed whacker goes, have you thought about using a propane weed torch? It's a propane-powered mini-flame thrower. We saw a kid, a summer hire, using one at the local botanical garden to kill weeds growing in the brick walks. Of course, he was having fun using the thing in full flame thrower mode, blasting the poor little weed until it evaporated in a puff of black smoke. Apparently all you have to do is heat the weed, it doesn't even have to wilt to kill the weed down to the roots. Of course, it still uses fossil fuel but the combustion products are much cleaner than a gasoline powered trimmer plus it kills the plant to the roots so it doesn't regrow. You can get these things at Lowes and Home Depot as well as online at Amazon. The one thing that inhibits me from trying one in the garden is the fear of setting the wood chips on fire!
Reply kitsapfreedomgardener
12:26 AM on September 11, 2011 
Dave - I used to actually have one of those that I used on a stone walkway to remove weeds in the cracks that would develop. It worked pretty well but was inclined to start small fires on any garden debris that was in the area that was dry. With my raised boxed edge beds, I am afraid I would burn the wood edging on them. I did get a solution though for the weekwhacker! I ordered a small push reel mower ( a good quality one) and some hand sheers for edging that are on a long handle with wheels (so you can just walk along and edge the side of the beds). Both are "people powered" and very green. I did the walk way tidy up in about 1/4 the time I spent doing it with the weedwhacker and it was much easier on my back. Think I have it covered now.
Reply thestayathomegardener
04:09 PM on January 20, 2012 
Anyone at the level of just composting humanure? It seems the perfect way to keep the nutrient cycle going with minimal losses. IE every nutrient the plant takes and remains with it when you eat it is placed back to the soil without those valuable resources away (sewer). Most likely hardcore for the general mini-farmer but appears to supply what everyone is walking around the subject on. Enjoyed Joseph Jenkin's book about it.

I absolutely love your blog Laura! (the obsessed part here being your inspiring me greatly with those double-dug potatoes!)
Reply David
02:32 AM on December 03, 2012 
I admire your dedication but you are making it too hard on yourself. The answer,on your scale, is urine. It is a safe, clean and concentrated nitrogen source. Nitrogen being the most ephemeral element, it is a use it or lose it (usually to the atmosphere) situation. Yeah, it is easier for guys...