Hemerocallis Gall Midge
Like many other gardeners, I am busy removing hemerocallis (day lily) buds, infected with gall midge larvae, before they fall to the ground to produce a new generation. I live in hope that if I, and neighbouring gardeners are sufficiently vigilant, it may be possible to eradicate this pest from the garden. Certainly in this second year of action, there seem to be slightly less buds affected, if this is not wishful thinking.
I was going to ask if anyone could tell me what the lifespan of the adult midge is? I then, after exhaustive searching, found this text on an American forum:
The adult midge has the capacity to fly 5 km in her 72 hour life span - so she is quite busy! The best form of control continues to be educating as many people as possible as to what to look for - and diligently picking off those affected buds and destroying them - burning is always best, never composting!
Eradicating a future generation will therefore lessen the numbers threatening in the following year considerably, provided that neighbours are equally vigilant and motivated.