Hello, I am new and this is my first post, wondering if my ajuga groundcover should be in evidence by now, I am in Boston area, zone 6,and had a thriving if small ajuga bed past 2 years, this would be its 3rd year and absolutely no sign of it, with a border of hosta peeking through. Hmmm...should I worry? We had a low snowfall winter and I did not mulch the plants!