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Banksia fertilizer


A couple of years ago I managed to grow 4 Banksia (Proteaceae) from seed -
for a while.  They grudgingly grew to about 3-4 in. ht., then slowly went
into decline and died within 6 weeks.  I now know these plants hate
phosphorus.  I want to try again.  All the fertilizers I have and all those
I see offered have some degree of this element in them.  Is there a formula
available minus phos.?  If I am to make my own, what do I use that is
readily available ?

Sonnie
newleaf@bright.net



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