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Indicator plants



I would like to get any information about plants that are known to 
indicate at a early stage anything to do with there environment,
shortage or to much of nutrician N, P, K, Mg etc.  or are sensitive for
or atract insects earlier than most plants.
If there are databases already existing or someone knows such planttypes
please mail them to me.
Any free data will be posted back to these groups when there's enough
data  collected

Frits v/d Laan
Organic horticulture



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