[Ozric Jonathan]

Hi Steve, Yes your south facing very warm garden could work well.

The female can run into problems if there are large stones below the surface and it can be tough for them to dig in heavy soil covered in grasses.

I've used the box method indoors and it did work but I found it was a lot of work. Your box needs to be quite deep. Both times I used this method I had to pour warm water on the soil and press it down firmly with a brick. The female did eventually lay both times under the lamp but spent a lot of time pacing about before digging and by the time she was finished I was exhausted as much as she was.