Will Grow Your Own nematodes affect earthworms?

Please could you tell me if Nemasys Grow Your Own will affect earthworms? Also, is it too late to use it this year as I am planting my winter veg now.   

Thanks

Vivianne

Nemasys Grow Your Own nematodes are not harmful to earthworms. It is also still the season to apply the nematodes for controlling a wide variety of soil borne pests. The nematodes will be active while the soil temperatures are above 10.c, which they will be several more months yet. Hope this helps.

Regards Julian