Re: CULT: Micronutrients

--- In iris-talk@y..., Linda Mann <lmann@i...> wrote:
"...depends on what's missing in the soil, what's needed by the 
irises, and what's present in the compost." in response to Patrick 
Orr's question: 'Couldn't the lack of micronutrients in soil be 
solved by adding well-composted organic material'

It will help if the source of the compost is at least partly from 
OTHER areas than your own garden, for instance coffee grounds, 
kitchen garbage, leaf mould and double-ground bark.  Ashes from wood-
burning fireplaces, if leached of the strongest part of their 
alkalis, have loads of micronutrients, but not necessarily in the 
proportions you may want.  A safe bet is a little bit of this, a 
little bit of that, and hard work to improve the tilth of the soil.  
Gypsum helps a lot on clay soils -- for calcium tolerant plants.  I 
am not sure if it will have the same effect as lime, as I suspect it 
is the carbonates in lime, not the calcium, that cause trouble with 
plants like Rhododendrons and JI's.

Neil Mogensen  western NC, zone 7a


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