When farming the flowers alone you can farm one and the same flower up to 4 times (at least 2 times with 100% chance, with lag up to 4) while only having to clean one time.
First, clean the flower.
Then, zoom your camera closely in, so that the distance of the Quest-Box where you have to click and the flower is as short as possible. ... Now rightclick on the flower and IMMEDIATLY click on the Questtext and farm. If you do it fast enough ANOTHER Questbox appears because of lag and you can farm again.
To take it further, have the questtext open and then click the flower VERY OFTEN and FAST. Immediatly manover the mouse to the textbox and multiply click the text to farm. I've managed to farm 35 Potions frome one flower
