'Magnolia Hill' Elderberry

'Magnolia Hill' is a wild selection of American elderberry found on an old plantation site in the North Carolina Piedmont and introduced by elderberry breeder Rodger Lenhardt of Norm's Farms. It is a vigorous grower that flowers slightly ahead of the species type, and its defining trait is a fruit cluster that ripens uniformly - the berries across a whole cluster turn dark purple-black together, instead of the typical mix of ripe and unripe fruit on the same head. That makes a single harvest pass practical instead of several passes over a few weeks. Maintained with the annual hard cutback below, it stays a compact 5-8 ft; left unpruned it can climb to 16 ft, like the straight species.

Culture follows straight Sambucus canadensis: full sun to part shade, moist fertile soil, and heavy suckering that should be thinned annually to keep the plant in bounds. It is self-fruitful but sets a heavier crop with a second elderberry nearby to cross-pollinate. Cutting canes to the ground in late winter channels the plant's energy into vigorous new canes, which is where it fruits most heavily, and keeps it at the compact end of its range. Raw seeds and unripe berries contain sambunigrin, a cyanogenic glycoside that causes nausea and vomiting; cook all berries before use.