I know this probably isn't super relevant to the story, but I just want to say:
• After weighing 50 sunflower seeds, the average weight was about 174 mg.
• 4 of those seeds is about 696 mg.
• the mass energy equivalence (e=mc2) tells us that 696 mg = 62,553,360 MJ
• 62,553,360 MJ = 14,950.6 tons of TNT
That is all.