Once scorned as boring, gray is now one of the coolest colors around, as anyone knows who’s picked up a shelter magazine or watched a home improvement show recently.

But gray flowers?? Believe it or not, one of the most beautiful iris I know is the luminous, pewter-gray ‘Florentina’, and two of the 20th century’s leading horticulturists agree that it’s something special.

In her 1916 best-seller My Garden, Louise Beebe Wilder called ‘Florentina’ “a charming inhabitant of old gardens” and “one of the loveliest of irises,” and in 1930 the first president of the American Iris Society, John Wister, wrote that it “well deserves all its popularity, as nothing is better either for massing or cutting.”

Wister described its unique color as “pearly white,” and some gardeners see it as a very pale lavender, but to Wilder and me it’s truly gray. Wilder called it “French gray,” a pale gray warmed by a hint of brown or gold, but to my eye it most resembles the silvery gray of softly polished pewter.

‘Florentina’ is “invaluable to us in creating May pictures,” Wilder wrote, no doubt in part because gray goes well with just about everything. She suggested combining it with pink bleeding heart and Single Late tulips, yellow leopard’s bane (Doronicum), and lavender woodland phlox (Phlox divaricata), or planting it “in spreading groups near pink-flowered crabapple trees.”

So, are you cool enough for this gloriously gray beauty? Order a few now for delivery in April!