Urea based fertilizers could be harmful to insect life (e.g. it's the active ingredient in "SB Plant Invigorator"). It's also worth noting that the fertilizatio

Urea based fertilizers could be harmful to insect life (e.g. it's the active ingredient in "SB Plant Invigorator"). It's also worth noting that the fertilization for mono-crops is detrimental to diverse plant ecologies - native orchid species in the UK have been decimated due to fertilizer run off from agriculture - lots of other species native to low nutrient chalk downland are also effected. The knock on is dramatic decreases in insect populations and diversity, butterflies have been hit especially hard.