Soaker hose question
I just planted some new Silver thorn aka ileagnus bushes. I have been watering by hand with a hand held nozzle that I can shut on and off between bushes. I want to buy a soaker hose to place along the back of these new bushes to water them, but my question is this: How long do I water to get the ground good and saturated as they need to be? or how can I check to make sure I am watering enough with a soaker hose? Thanks.