An article in The Hosta Journal (2016 Vol. 47 No. 2) states that this is a Trademark collection used by Walters Gardens, Inc of Michigan as a marketing tool for several hosta cultivars including:

	H. 'Autumn Frost'
	H. 'Coast to Coast'
	H. 'Diamond Lake'
	H. 'Empress Wu'
	H. 'Etched Glass'
	H. 'Hudson Bay'
	H. 'Seducer'
	H. 'Waterslide'
	H. 'Wheee!'
	H. 'Wu-La-La'

The plants would be labeled in the format Hosta SHADOWLAND® 'Autumn Frost'.