"Northeastern Europe, Pyrenees to Bulgaria and southwestern Czechoslovakia" (Missouri Botanical Garden)
USDA indicates the straight species is native to Western North America.
"Lonicera caerulea, commonly known by a variety of common names including blue honeysuckle, honeyberry, sweetberry honeysuckle, and haskap, is a circumpolar, multi-branched, deciduous shrub that is native to moist boreal forest areas, mostly in peaty soils, in northern temperate climates in Asia, Europe and North America.
This shrub in general is unlike many of its honeysuckle relatives in that it produces an edible, tasty, blueberry-like fruit. It typically grows to 4-6’ tall and as wide. Opposite, elliptic to ovate, glaucous green leaves (each to 2-3” long) have slightly wavy leaf margins. Pale yellowish-white flowers (to 5/8” long) bloom in late spring to early summer (April-June) in pairs along the shoots. Fruits ripen in early summer to deep blue with reddish-purple insides. Fruits are pruinose with an oval-teardrop to almost-globose shape. " (Missouri Botanical Garden)