Bunny's Ear - not Lamb's Ear

"Lambs ear (Stachys byzantina) and mullein (Verbascum) are both plants with velvety, wooly leaves. They are in different families, require somewhat different cultural conditions and have different growth habits.
Mullein (Verbascum thapsus) grows as a “foliage rosette” with a central stalk that produces yellow blossoms. Lamb’s ear (Stachys byzantina) grows as a “foliage clump” and produces pinkish-purple flowers. While the leaves are quite similar, mullein grows much taller and lamb’s ear leaves are softer. The most obvious, easiest identification is in the color of the blooms."

I admit I confused them when I first moved to AZ.
As noted above, Lamb's ear has softer leaves than Mullein which is also called Bunny's Ear.
Is a lamb's ear softer than a bunny's ear????
I really don't know...
Some Mullein flower spikes can reach 10 ft in height (yikes) and they grow along roads and trails in the AZ mountains.