I understand their normal conditions are in poor soil, which is why the flytrap, but why would good soil outright kill them instead of them ignoring it or maybe just doing slightly better?
“Good” is based on the needs of the organism. There can be things in “good” soil that are toxic to venus flytraps. Just like “good” water will kill fish if it’s the wrong type of water (i.e. salt water fish in “good” drinking water. Dead)
Latest Answers