Добрый день! Напротив дома на хвойных появились видимо гусеницы, надо ли куда-то обращаться пока все дерево не покрылось?

Ради деревьев вряд ли. Ради себя/детей/питомцев - может быть: https://cyprus-mail.com/2023/01/15/march-of-the-poisonous-processionary-pine-caterpillars/ > the white hairs that cover its body contain a toxic substance that can cause skin irritation and allergic reactions in humans and animals > The best way to control the processionary pine caterpillar is to prevent them from hatching in the first place. If you see the silky, weblike nests, contact a professional pest control service to remove the nest before the caterpillars hatch. If the caterpillars have already dropped to the ground, pesticides are not always effective and may also harm other insects and animals.

Ради себя, любимых конечно)