PatC wrote:

Not just this year, I posted a few times before & have had none for the past
3 years

Are you planting in the same spot each year? That isn't good as it
allows the pest species to build up each year.

Did you put on lots of organic matter like cow/chicken/mushroom/etc
compost? OTOH, you can put easily too much chemical fertiliser on?

Tested the soil PH?

Watering or waiting for rain?