Leaves, leaves everywhere (12/8/2017)

Fall is almost over, and winter is about to start. Our neighborhood has all the icons of late fall mixed in with the signs of early winter.  The inflatable turkeys are being replaced by inflatable Santa’s, but worse, all over the side of the roads we see stacks and stacks of plastics bags filled with leaves.  People that live along the wood line in our neighborhood blow or dump the leaves in in the woods.  I guess they don’t realize that they create a fire trap for themselves.  They have piled up this huge layer of incendiary biomass that if it ever catches fire would create a spectacle with embers that would definitively fly everywhere (read their roofs).  Interestingly, I was teaching the people who maintain the trails back in the woods and I told them where I live. The first question they asked me was: “Are you one of those leaf dumpers?”  My emphatic answer was: “NO!”

It's all in a day's work!  Kids could really have fun with this, building forts, except they are a favorite target of many of the male dogs in our neighborhood.

During one of my workshops I teach a course on soil amendments where I talk about plant nutrition and compost.  I always get a few laughs and definitely a few smiles when I tell my students that plants are different than us bipeds or animals in general.  We humans need hamburgers and French-fries to sustain our selves (unless you are a vegetarian or a health nut, of course); but, I tell my students, plants make their own hamburger and French-fries.  All they need is sunshine, water and some boring minerals.  I pop up a list of all these boring minerals and discuss the three most important ones: Nitrogen, Phosphorus and Potassium.  I tell my eager students what the function of these three elements is in the plants.  Nitrogen for leaf growth and protein production; Phosphorus for (root) growth, DNA and energy; and Potassium for flowering, and energy.  If you are a biologist, I know, this is very a very simplistic and rudimentary explanation, but so be it.

If plants needed to hamburgers and French-fries to survive they would need to look like this carnivorous mushroom.  Naturally this is completely fictitious!  Happy they don't exist, although meat eating plants or carnivorous plants do exist.

Maybe difficult to see, but these are pitcher plants hidden under the grass.  These plants are carnivorous and capture bugs.  I took this picture in June in Newfoundland, Canada.  

I tell the folks under my tutelage that in the fall trees shed a lot of Phosphorus in their leaves.  Leaves are full of DNA, RNA, Chlorophyll, Mitochondria, and ATP which all have their fair share of Phosphorus, and a lot of this Phosphorus rains down in the fall with the leaves.  Subsequently, a lot of people rake the leaves up and dispose them in a landfill (as I tell my students, their dumb neighbors do that, and I am sure they don’t).  The only way the trees get that phosphorus back in the leaves next spring, is by pulling it out of the soil (if there is still some left after all those years of carting leaves off to the landfill or dumping it in the woods somewhere).  In fact, people that bag their leaves, mine phosphorus out of their soil and the only way they could get it back is by paying the fertilizer companies or start a seagull colony in their backyard, but who wants to do that.  Alternatively, they could use a mulching mower and grind the leaves into small pieces so that the leaves can decompose and the Phosphorus can leach back into the soil.  Folks could also compost their own leaves and turn them in to black gold; use them as mulch; or send them to a composting facility.  However, they still would be mining Phosphorus when they send them to a composting facility, unless they buy compost and put it back in their yard.

In addition to returning the nutrients back to the soil (organically), the leaves in the flower beds provide habitat to the animals in the yard, especially the birds.  In my yard, the towhees, fox sparrows, white-crowned sparrows, juncos (in the winter) and the brown thrashers are running around the leaves and are scratching for bugs like chicken.  Whatever goes for a lawn in my yard has a lot of mole, vole or maybe even shrew tunnels.  I don't know if it is true but they say that chipping your leaves gives you a lot of soil insects, such as grubs, which attracts these critters.  Oh well, I rather have this than poisoning my environment.  We are harming our planet enough already that I think that all small things help, and we try to keep all poisons and chemical fertilizers out of our yard if we can.  I use chemical fertilizers on my bonsais but I use soapy water to fight off any bug infestation in my miniature trees.

We really should try to do our part for the environment even if it is a little bit.  A small steps help.  Thinking that your use of fertilizers or pesticides do not contribute much to the whole picture is erroneous; damage is cumulative, it all adds up.  All those small positive things add up too, and while we may not notice it in our life time, our kids or grand kids surely will.  We only have one blue marble to live on.

So let's not bury our leaves in landfills and mine nutrients from property to replenish them with artificial nutrients.  However, let's recycle, compost and reuse them.