Self-Seeding Russian Sage Perovskia atriplicifolia 'Little Spire'

Russian Sage seedling - Perovskia atriplicifolia 'Little Spire'

I left my 'Little Spire' Russian sage standing late into the winter, and I didn't think much of it - then I cut them to the ground in early early spring. Now, my Russian sage has been growing up from the ground this spring and are back to the size they were when I put them in. I hope they get a little taller, I'd like them to be 3 feet tall to hide the huge green power box a little more.

In addition to my Russian sage new growth, I noticed what I thought were weeds scattered around this power box bed. Upon closer inspection, the leaves looked similar to the Russian sage, and my fingers smelled minty after pulling a few. When I went back a few days later, I saw what was clearly Russian sage babies growing all over the place! Free plant babies!

Perovskia atriplicifolia 'Little Spire'

My power box bed looks backwards because I have tall grass behind the power box, so it's not hiding anything it looks like I'm accenting the lovely green utility box. I hope the Russian sage grows in like crazy and hides the whole lot! That's Karl Foerster and two types of cone flower on either side.

I read online that Russian sage likes to self-seed if you leave the dried stalks standing past their prime. However, now I'm wondering if 'Little Spire' from seed is 'Little Spire' at all - isn't the seed the product of sexual recombination? So aren't these new sprouts different from the parent?