This rare ‘Duke’ is “deliciously fragrant” (W.N. Craig, 1905), and its bold color pattern — evoking Renaissance pageantry and the shields of heraldry — is one of the most enduringly popular in all of tulip history. In fact, if we assembled gardeners from, say, 1650, 1750, and 1850 and asked them to choose whichever of our tulips they liked best, we’re sure ‘Duc de Berlin’ would rank in their Top Ten. Single Early, 8-10”, zones 4a-7b(8bWC), from the Hortus.
Limit 5, please.
TYPE Single Early
SUB TYPE Single Early
BLOOM SEASONS early spring
SOURCE Hortus Bulborum
LIGHT full sun
PLANTING & CARE
Well, almost. Though they have a reputation for being short-lived, we know of tulips that have been blooming beautifully for decades. Here’s how to get the most out of yours.
For a start, you need to be in zone 7 or colder, or zone 8 or colder on the West Coast where winter temperatures stay cool longer. (Gardeners in warmer zones can grow tulips as annuals, but you’ll need to pre-cool or pre-chill them in the refrigerator for 8-12 weeks before planting.)
Then most important, we’ve learned from experience, is keeping them DRY in SUMMER (as in their native homes). Try this: plant a few where you never water in summer — or near a thirsty shrub or tree — and see how well they return.
Beyond that, the basics include well-drained soil (improve heavy soil, or try raised beds), lots of sun, regular fertilizing, and — this is very important —letting the foliage ripen to yellow to feed the bulbs for next year’s bloom. Some authorities recommend deep planting, especially in the South — to 12 inches — but we say 6-8 inches is plenty.
Then there’s this age-old method: dig them up every summer, store them in a cool dry spot, and replant them in the fall. You’ll end up with more bulbs every year, guaranteed.
Some varieties just last better, too — often Single Earlies, Single Lates, Lily-flowered tulips, and species.
And there’s a good reason why OLD VARIETIES OFTEN PERENNIALIZE BETTER: they were bred for gardens, not for commercial pot-flower and cut-flower uses as most modern tulips have been.
Tulips do best when planted in mid- to late fall, after the soil has thoroughly cooled. Later is better than earlier with tulips. If necessary, store in open bags in a cool, dry spot (or the refrigerator — NOT the freezer).
Neutral to slightly alkaline soil is ideal, though tulips are very adaptable. Set bulbs about 6 inches apart from center to center (or closer for a lush look). For each, scratch a tablespoon of bulb fertilizer into the surface soil (slow-release 10-10-10 is ideal). Use no manure. Water well and make sure the bulbs have reliable moisture throughout their growing period, from planting in the fall through the ripening of their foliage the following summer.
Learn more about growing and enjoying tulips at our Tulips Newsletter Archives and Bulbs as Cut-Flowers page.