Long-Term Tap Water (200 ppm) Effects on Carnivorous Plants

200 ppm tap water for 12 months will devastate most CP. Sarracenia Northwest's well water trial (150 ppm) showed: Nepenthes/Pinguicula unaffected; Sarracenia browned by September; sundews/VFTs declined with mineral deposits; red VFTs nearly eliminated. Half the VFTs and hardy sundews died.

Sundews and VFTs are most sensitive. Teach your sister to use the RO unit—it makes great drinking water too. RO is non-negotiable for long-term CP health.