So far this grow Iāve had mites, thrips, white fly, aphids, worms, grasshoppers, leaf hoppers and miners.
Aphids come early, so Iāll inspect daily and kill by hand, while spraying the big attractants like roses & nasturtiums with water & soap.
Thrips, leaf miners, & white flies I donāt worry about and just pull any infected leaves. (Donāt get a ton of any of these pest.)
Kill grasshoppers & leaf hoppers by hand.
If you have bud worms in your area you have to be proactive. If you donāt, itāll be too late in flower. Iāve already started spraying Bt and will continue throughout the grow. When the cannabis plants are young they donāt attract a lot of worms, so Iāll also spray other yard plants that I know the worms are going after now. I have Jerusalem Artichokes (tall yellow daisy like plant) and Iāve been spraying them also.
For mites Iām also proactive in cleaning out leaf liter and removing plants that attract them. For instance the two spotted mites love cat mint and dandelions so Iāll make sure to remove any that pop up over the winter. I saw mites in my yard back in February - with the two-spotted spider mites the overwintering females are the ones that are larger and reddish in color. Iāll use spinosad and a home recipe of oil & isopropyl alcohol. Spinosad is only supposed to be used a limited number of times during a growing, so will use the oils in veg and try and save the spinosad for flower (August). Just pulled all my Nasturtiums a few days back, as theyāre already fading and also a big attractant.
The worms are the only pest Iāll spray before seeing. Not a good plan to randomly spray stuff if you donāt know what the pest is and how much of a problem itāll be. If youāre growing in the same area within a few years youāll know whatās around. Most of the beneficial bugs will show up late to the party, so you donāt want to be killing all them before they can do the heavy lifting.