Rather, it would seem that we must use these insects to pollinate them.

That is not so difficult, on the face of it. The trouble is that apparently each flash adds to a series in a sequence, and we must complete the full sequence from memory. If, for example, a flower glows red, another green, and a third yellow, then we must remember to have the Bursterfly dip to the one that flashed in accordance with each color in the order presented to us.

[ it was definitely a little pesky insofar as the flashes were quick, too. and Gilgamesh obviously had no idea how many permutations it would take to complete whatever the full pollination sequence was. presumably, it was not indefinite, and if they completed the sequence in its entirety, things were supposed to resolve... ]