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Joanne from Hopkinton Ma writes

How many Koppert Terranem (Heterorhabditis bacteriophora) do I need?

I live in Massachusetts. Will these worms work on grubs? How many worms will I need for 15.000 sq ft? Do they die in the winter?


Koppert Terranem (Heterorhabditis bacteriophora) are not for lawn infesting grubs.  They are only for use in Greenhouses and field crops for controlling the Larvae of various species of beetle (grubs), particularly those of the garden chafer (Phyllopertha horticola). Also effective against Serica brunnea, Hoplia spp. and dung beetles from the genus Aphodius.

Answer last updated on: 03/04/2020

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