My main back garden is quite small, so to have planted any of these there (and by a Master Gardener I might add) was dumb beyond words. She planted 3 or more of them along every side of this garden and they are now sending their runners underneath the paved walkway WE installed over her poorly graveled dirt path and now trying to take over the center 'island' bed.
Here's an older photo of this garden before we moved & buried the downspout drain pipe (after I slipped on her wet, dirt path on a rainy day & broke a wrist).
These next 3 photos were taken today, and you can see how many she planted and how it's taking over one entire end of the 'island' bed in the center I had other plans for.