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Was Monster Wisteria, Now Nitrogen

In a message dated 98-06-20 01:27:46 EDT, Mary wrote:

<< Janis, You are so right! I've begun to think that nitrogen fertilizer is
 the mark of the beginner. Sooner or later, most of us figure it out.
 Anything that isn't grass, probably needs very little nitrogen. >>

Mary,  Just so the beginners on this list don't misinterpret what you (and I)
said about nitrogen, I would like to make it more clear.

Nitrogen is essential to the growth and development of all plants.  Nitrogen
is a component of proteins, amino acids, nucleic acids, enzymes and
chlorophyll.  Plants respond to nitrogen by exhibiting increased shoot growth,
density, root growth, recuperative ability, carbohydrate reserves and
resistance to stresses such as heat, cold and drought. 

But that does not mean you necessarily need to give your plants nitrogen
fertilizer.  Plants obtain nitrogen (and other nutrients) from the soil, from
organic matter, and from the atmosphere.  Nitrogen becomes available to plants
when microorganisms break down organic matter in the soil.  Adding compost is
a great way to supply your soil with organic matter.  Not only does it provide
nutrients for your plants, but compost also improves soil texture, structure,
porosity and drainage.  

So if you have good soil you should not need to add fertilizers except for
those plants which are "heavy feeders" (such as roses, delphiniums, and
lilies).  

The addition of too much fertilizer can be harmful.  Excesses of certain
nutrients will  tie up other nutrients and actually create nutrient
deficiencies.  Too much nitrogen can cause excessive aerial shoots at the
expense of root growth and flower production, and can produce thin, weak cell
walls which reduce stress tolerance and make plants susceptible to disease.   

And if you give nitrogen fertilizer to a wisteria, I recommend you run for
cover.  --Janis
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