The plants were made before the ash clouds were cleared and by that point these plants were small and sparse such as moss and microscopic algae. Despite the new growth of algae and moss, it would be difficult to believe that there would be enough to sustain a large population of Knon considering their size. While the Mighty Act does make the Knon extremely strong, wise, intelligent and such and such their described attributes do not lend well towards an ecosystem collapse.
While I get what you're saying Micelus, I'd just like to explain my thought process here, and explain why this is a sort of big deal for me.
This is what Radgorix did.
Radgorix than used the rest of his power to make the planet more survivable, by adding simple underwater water and land plants that could be eaten by the mortals.
Use the third act to create simple plants.
The entire point of Radgorix's action was to make the planet more survivable by making more food. He didn't even specify that he wanted photosynthesizing plants, they could have been some plant analogue. As such, though I was worried by Taricus shutting down all the volcanoes, I wasn't too worried about since I thought we'd all be fine due to Radogarix's action.
I also didn't realize that there'd be such a large gap between the actions taken by the different gods that the plants thing would go so poorly.
As result, I seem to have no choice but to become a bound the turn after next now, because I simply can't get to one full act fast enough to prevent this, all because I underestimated how many Knon would die.
EDIT:
EDIT: Yup, completely. The Lithofauna weren't that affected since they feed on essence. Hint hint for next turn's developments.
Okay, changing my game plan then.