- Tue Jan 05, 2021 12:30 pm
Auckland tap water is considered soft, that would put it about 70 to 140 ppm TDS. Many carnivorous plants do better a TDS of 50 ppm or less; Flytraps, sundews, etc., while others can tolerate higher levels of TDS.
My tap water (Clarksville, Tennessee) is between 100 and 110 ppm. I use it to water my Sarracenia, Pinguicula, and Nepenthes. My Sarrs sit in water, but the Nep and Ping just stay moist. I water the Nep and Ping until water flows out the bottom before I put it back in its hanging basket or tray, whichever the case may be. My VFT's, Utricularia, and sundews get distilled, and they generally sit in some water to a lot of water.
All that being said, there are other growers close to me, some on the same municipal water system, that exclusively use tap water for all of their carnivorous plants without an issue.
If you can find out your TDS, and it's low enough, you could potentially use tap water for all of your plants. But maybe flush them with distilled water each Spring and Autumn to remove any buildup of minerals.
However, even if you're not sure, and you have to use tap water; any water is better than no water.
Just a thought.
Everything happens for a reason. Sometimes the reason is that I make bad decisions.