About 10 years ago, nurseries were offering a small salvia, called salvia superba or meadow sage. A few years later, "May Night" and "Blue Hill" appeared on the market similar to this first salvia superba but both were taller (salvia superba gets to 12"). I am trying to find a correct identification for this shorter salvia for an article on drought tolerant plants. Thank you.
Salvia x superba Stapf [sylvestris x villicaulis] (synonym Salvia virgata) is an introduced species. Non-native plants are not really in our purview; however, I will suggest a couple of web sites that might help you find some clarification. One is for 'May Night' Meadow Sage which is listed as either Salvia x sylvestris or S. x superba. There certainly does seem to be confusion about the proper botanical name. Another web site has links to several people doing research on the genus Salvia.
You should be aware that S. x superba (S. virgata) is on the "A" list of noxious weeds in California. The statement for "A" reads: "Eradication, containment, rejection, or other holding action at the state-county level. Quarantine interceptions to be rejected or treated at any point in the state." The California Department of Food and Agriculture gives more information about Meadow Sage (S. virgata). It doesn't sound like something you would want to recommend to be used as a drought tolerant plant.
More Invasive Plants Questions
Request for native grasses from Hillsboro TX August 04, 2012 - P.S. I forgot to mention one very important fact: my neighbor specifically asked for "native grass" recommendations. He thought he was getting a native grass recommendation. view the full question and answer
The invasiveness of Lupinus arboreus January 23, 2009 - Hi,
Researching Lupinus arboreus, I found that it is considered a serious invasive in Northern California coastal areas, especially Humbolt Bay. Scotch broom, of course, is an awful pest on the coast... view the full question and answer
Ground cover for Central California from Concord CA July 19, 2012 - I live in a part of California where the summers can be very hot and dry but quite cool and wet during the rainy seasons in the wintertime. The soil around my home is very dry, rocky and infertile. I... view the full question and answer
Controlling Rapistrum rugosum (annual bastardcabbage) March 09, 2012 - The invasive, Rapistrum rugosum, seems to be especially ubiquitous this year. I communicated with Dr. Mark Simmons a few years ago regarding his research, which indicated that over-sowing wit... view the full question and answer
Flashing barrier to Bermuda in tree bed September 16, 2007 - I'm building a 6-ft-diameter planting bed on a gentle slope on blackland clay, at the center of which I plan to install a cedar elm. I'm using the wedge-shaped stones from the home-improvement stor... view the full question and answer