I've used very low (20-50PPM) dosages with positive and negative responses from temperate and south african sundew seedlings. First time fertilizing they respond positive. 2nd time fertilizing 2-3 weeks later is when they respond negatively.
POSITIVE- explosion of growth
NEGATIVE - the tentacles will curl, growth will stop, but maintain red coloring.
I always use a tiny paint brush to apply fert so it won"t drip into media. Distilled water is used.
Any feedback is much appreciated.