![]() ![]() This will waste chemicals and you will likely end up spraying yourself in the process. Whatever spray method you use, don’t spray when it is windy outside. Unfortunately, spinosad doesn’t last that long in the environment and needs frequent reapplication.Īzadirachtin is another natural insecticide that is said to be effective against the leafminer larva. In addition, spinosad is supposedly safe for the leafminers natural enemies. However, the topical/spray spinosid (which is a natural insecticide) is able to penetrate this leaf barrier and kill the parasite. Since the larva is found just below the leaf surface, many topical sprays will not reach the pest. I would also expect this type of insecticide to dramatically change the soil microbial environment for the worse. ![]() However, I am not thrilled with this option because I am not confident about how long it will be in the plants system or to what degree it will be inside the fruit that I eat. There are several systemic chemicals that you can put directly in the ground to be absorbed into the trees through the roots. This is always a difficult balance to be mindful of.Ĭitrus leafminer insecticides (options): Systemic chemicals: None the less, many insecticides are nonspecific and can/will reduce the populations of beneficial insects. Therefore, in my strong opinion, chemical control may be your only option. I have several young citrus trees that took a major hit a few years back and this ‘hands off’ approach is not in any way recommended by me. However, this option is definitely not my experience. Some people have suggested that you can just leave the leafminer alone and the plant will survive. General considerations regarding insecticides for Citrus Leafminer: There are just too many moths in the environment for a few traps to do anything significant to the mating population. However, for me using the pheromone traps didn’t seem to do anything to protect my plants. This sounds good, on paper in fact it was my own personal first step in the battle. The rational is that if you pull the males out of the population, there will be no mating and therefore no larva to hurt the plant. However, some people have advocated using them as a primary means of defense. ![]()
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