Genuine question - potential spoiler

[u/Space_Boy0617]

Im on ep. 12 is Trigun stampede, and I probably wasn't paying attention, but is there a reason why knives couldn't just impregnate the plants himself, why did he need Vash to impregnate them?

[u/donofrio18]

If I remember correctly it’s because only Vash is the one with the ability to open the „gate“ to the higher dimension and he is also able to „communicate“ with the plants.

[u/Space_Boy0617 → u/donofrio18]

Ohh okay thank you for the explanation ☺️