It should flower. Just prune lightly, only cutting back the old flower stalk and a little lower into the upper part of last years shoot where the pairs of leaves start to bunch up closer together. Hopefully this cold winter so far will not have caused too much damage!

As long as it isn't L. stoechas: that has a tendency to only flower in the spring.

Not in the Uk Tug :-)

thanks Fractal, I will lightly prune it as you suggest

Thanks, Fractal! That's good to know. It's frustrating to buy a beautiful mass of color in the spring, and then wonder the rest of the year, "Why did I get this, anyway?" If we deadhead promptly, we can sometimes get a weak second bloom before the heat sends it into dormancy, but it absolutely refuses to bloom in the fall and winter when it does most of its growing, here. True French Lavender (L. dentata) never stops blooming, but it's nowhere near as showy!

Sadly the dentata types succumb to both cold and winter wet over here :-(

Arizona eh, are you in the southern lowland area or the Flagstaff plateau?

Southern lowland, downtown Phoenix, to be exact. EXTREMELY hot summers, with humidity and occasional thunderstorms in July and August. Mild winters with occasional two-day drizzles. Our climate includes some of the best and worst of the subtropics and the Mediterranean.