Thank you Connie
You're welcome Natalie--genius? oh no! incorrigible fool!
I can't even begin to tell you all the epic garden disasters I've created and the precious little plants I've tortured and killed--the sempys are not immune to my ignorance but they are pretty darn tolerant like I said
Interesting on the extent of the roots...is there a resource that details which kinds have which roots??
Thinking back on it...the only ones I have noticed to have what I would term shallow root systems are those grown either with consistent moisture or in poorly draining soil...I have always been particularly impressed and shocked by the extensive root systems that they can develop under and in-between and in rocks--even the little rollers can have relatively extensive root systems when I've attempted to extract them from some interesting places...
And I'm just guessing, but I'll bet that those little arachnoideums have some surprisingly extensive roots into that shale.