So I enclose a shot of the dayliliy seedlings in the greenhouse taken 5th May (so just short of 2 months from sowing) - they need potting on. Can you see the difference between those treated with hydrogen peroxide & those not - No! Neither can I, there isn't any. The far right tray is the 'Licorice twist' tray with all 3 different treatments in the 1 tray & the other 3 trays are all 'Vectis Jean Peirce' - other that the VJP seedlings being simply a thinner leaf, there is no discernable difference in the volume or the strenth. Maybe it works differently with other seed/older less viable seed - it's up to you if you want to use H202 - I won't be.