I made the experiences, that Nepenthes in nature are growing in quite
different soils. In culture I am using one standart-substrat for all. Also
the plants, which grow on ultrabasic soils do not suffer in normal
substrat. Ultrabasic is not "basic" in difference to "acid". This soil is
rich in magnesia, which is sometimes toxic to other plants in this
concentration. Therefor you find many specialists on such soils. And
these plants like a little bit more magnesia in the fertilizer!
Bye Johannes
Johannes Marabini Sperlingstr.10 91315 Hoechstadt/Aisch Germany
Tel./Fax 49 9193 4866