Check out Grow Native Massachusetts One of our favorite organizations, lots of events and education: We use (and sell) Organic Mechanics soil from seed to sale, all peat-free. Sometimes the growth is so explosive it creates an algal “bloom” with millions of organisms discoloring This excessive growth causes an unhealthy increase in the amount of organic matter within a water body Wild Ones is a not-for-profit environmental education and advocacy organization.”

Remember that even organic pesticides like Neem oil are broad spectrum insecticides , meaning they do Adding more organic matter to the soil helps it remain porous, like a sponge. Organic matter includes plant roots, so the more roots you have, the better the soil will be at absorbing

From habitat loss to pesticide/insecticide spraying (yes even those "organic" pesticides/insecticide)