Insects and diseases in the vegetable garden and on fruit plantings are minimal under the natural organic program, but the occasional serious pests have relatively easy solutions.
For example, aphids on the new growth of various plants can be easily killed with any of the mild organic sprays or soapy water mixtures. But they are probably there because of mild temporary stress caused by changing weather and will soon move along one way or another– possibly by being eaten by ladybugs and other beneficials, including birds.
Caterpillars seem to be less of a problem this year. I saw some tent caterpillars, webworms and even small green canker worms earlier and thought a strong assault was on the way, but it hasn’t materialized. That’s partly because of more and more gardeners going organic and releasing Trichogramma wasps, but I think the increase in birds is also a factor.
If caterpillar pests do pop up, spray them with Bt or spinosad products, but keep the spraying confined to the infested plants to avoid hurting butterflies. Plum curculio worms may show up in fruits if the trees are too deep in the ground _ so get all the root flares dramatically exposed by removing mulch and soil.