We’ve had several of these gray santolinas in the front yard for two years and really like them for their silvery color, nice roundish shape, and drought tolerance.
On our France vacation last summer, we saw these same santolinas in a huge public garden, but they had some cute little yellow button-type flowers on them. I assumed those Parisian yellow buttons were a result of the more temperate weather and a bit more rain.
the santolina in Paris' Bois de Boulogne
But look! Ours are now covered with yellow buttons! I’ve planted five other gray santolinas in the past year, but they’re still button-free, so I guess they’re just one of those plants that doesn't bloom for a couple of years.
close-up of santolina blooms
santolina and rosemary by the sidewalk
Surrounded by verbena is one of the seven newer santolinas that hasn't yet bloomed but still provides a nice color contrast.