Posted: 28/09/2016 at 14:30
Don't add worms if there is nothing to tempt them there in the first place. There will be good reasons as to why your worm count was so low.
1. Water logged. Worms need to breath. If you have a heavy compacted clay that is saturated they will have retreated to safer ground. Adding more worms at this point just creates a worm graveyard and a hole in your wallet.
2. Its too hot. Worms of course don't like to bake. If you dug over on a hot day they will have retreated deeper for some where cooler.
3. Too dry. Although they don't like wet feet they don't like it too dry either.
4. There is nothing there to tempt the worms. Like us we don't hang around an empty shop or closed restaurant. Dig in some well rotted compost, some mature rotted horse manure, (to both the lawn area and planting area). Make it a place the worms will WANT to come. And they WILL come. Eventually. Little worms travel at 27 feet per hour and bigger ones can hit 240 feet an hour but the best bit of all is that you don't need to keep digging the soil to check for them. The worms will create a balance that best suits your environment.
Your rural location makes little difference to a worm, neither will the wall (since they travel underground). What you need to do is transform the area to tempt them in.