Maybe good sized pieces of slate, or bricks, around the plants, covering up every inch of bare ground? There are not too many things that will keep a dog who is determined to dig, from digging. Providing your dog with acceptable areas to dig might help. providing those areas are pleasing to the dog. Many like to dig in sandy soil.

What breed is she? As spedigres says, some are just born to dig:-). BIL's first Airedale excavated huge, deep holes... Fortunately, the next two were less inclined to dig! Is she perhaps bored? Are there critters in the ground that she's hunting? I doubt there is any easy solution. Training, vigilance, and keeping her busy at other activities so she's not bored is probably the best things to do.

If she's that young, stress from the move is probably part of the reason she is digging, plus she should settle down as she gets to 3 years or soold. Patience, patience.... :-)

Oh, gosh -- we've been here just shy of a year, and I only had her about one month prior to the move, so I would think this is where she identifies as "home". Believe me, this dog has not a care in the world -- she has plenty of room to run around, she goes to doggy daycare two or three days a week where she gets to run around and play with all her friends, has toys galore, and is well fed and much loved. If only people were all so fortunate...

Low decorative wire fence along edges might be adequate and not that intrusive.

She certainly sounds like she's got a good home :-). But from her perspective it's still a lot of change in a short period - plus most breeds of a reasonable size takes three years for their brains to catch up to their bodies IME :-). The first three years can have a few 'grit your teeth and get through it' moments :-). Depending on how dominant the GS is in the mix, a low fence might work. Our 'wet corner' bed has a 6" tall iron fence around it. It was put there to keep the Golden we had when we bought this place out of the very wet, muddy area in spring. She could have easily stepped over it (and most other dogs do!), but she recognized that the fence made it a no-go area. We only had to tell her once and she never went there again!

Since she's on a leash, it should be easy to get her to stop digging (if she's properly leash trained and has the right leash and collar.) I suggest both she and you go to obedience school; it's actually pretty fun!

Well.... Rat terriers do love to tunnel and dig but the good news is they go for vermin. Hopefully the shepherd part of her is dominant. She is a good looking girl.

She no longer is on a leash when she's outside to play -- we have an invisible fence system in place that works great, and it lets her run around the acreage to her heart's content :0) She's a looker, that's for sure; man, my life would have probably turned out differently if I had long legs like that... LOL!

Oh, well if you already have an invisible fence, couldn't you just add to it to keep her out of certain planting beds? I don't have an invisible fence, but I would assume the perimeter can be extended.

And what a lucky girl she is having so much room to run and play!

I know of folks who have used low ornamental fences (as embo suggested) along with training to keep their dogs out of garden beds. The dogs learn to associate the low fencing with no-go areas.

There are also sprays (orange-scented IIRC) that dogs don't seem to like but I didn't find objectionable at all.

In my neck of the woods, strange things started to happen...people started planting water bottles! And we had no idea what was going on until I asked the neighbour who started it and she indicated something about stopping dogs from going (peeing?) on the lawn. So now my next door neighbour has started to do this. Check out this fine display:

Still trying to figure the point of this - up until one day last summer, they were happy to have the bed filled with weeds. Then I guess there was a burst if energy and they tore most out and threw in some straggly hostas and the water bottles - so the bed has more or less looked like this from that time.

Why on earth would water bottles stop the dogs from going in the beds? Heck, my dog would probably jump right in there to play with the bottles LOL! Just looks like trash in the bed to me. Pass.

As someone said in a different way, she's a "ratter" bred to go after critters in holes. She sees a hole, she'll dig until she finds the occupant (and move on to a new hole if she doesn't) You might be able to redirect her, exclude or deter her from particular areas but you won't be able to get rid of her instincts.

If you have the time, interest or inclination you could consult a canine behaviorist (!) by book, internet or in person. Otherwise, people here are likely to have as much experience or ideas as anyone else

I wonder if there's a dog forum on houzz? The 'old ' gardenweb I village forums have a wealth of knowledge. I got kitchen remodeling advice that was very helpful. People on these forums were as helpful as people here.

Yes, it is strange. My other neighbour who has a dog said the same thing. The original neighbour who did this has a small, well kept front lawn, approximately 13 feet wide like the majority of these on the street. She lines up usually 4 bottles on the lawn. When she started doing it, it was the strangest thing. It was in the summer, and I actually thought she was leaving out bottles of water for thirsty passerbys!

^^ LOL!

Oh, that looks ridiculous. Sort of wipes out the impression the tidy lawn is supposed to convey, doesn' t it? Maybe they're supposed to really change the behavior, not just deter it?

Well, I don't know if it's deterred much, it sure has caused some street discussion. You just can't make up this stuff...