I have been following this thread with great interest particularly regarding gall midge. If gall midge is in anyway similar to rose midge's effects on roses, then it will be headache and heartache for the organic gardener or any daylily grower who does not want to use insecticide. My experience with rose midges is that it is extremely difficult controlling the midges without the use of chemicals. There are some organic methods but they are so time consuming and require so much effort and persistence that it is next to impossible to deal with as a home gardener. I had issues with Japanese beetles, aphids, thrips, spider mites on roses but I was able to control these insects through the use of insecticidal soap, neem oil, picking, or just water sprays. But I had not been able to apply the above products to control rose midges. Two years ago, I had such a bad infestation that I had to resort to chemicals to eliminate rose midges. That experience really took a toll on my conscience and since then I had stopped buying anymore roses. I am now trying to reduce the number of roses in my garden because I do not want to have to apply more chemicals should the rose midge make a comeback. I hope the daylily gall midge will not infest my garden and daylilies anytime in the future. But I know that it does not take much to get an infestation going. One or two larvaes can quickly escalate into thousands in a year or two. By the time that you find out that you have a problem, the infestation is widespread.
