By Amy Grant The American elder (Sambucus canadensis) is most often grown for its unusual tasting berries, too astringent to eat raw but delicious in pies, jellies, jams and, on occasion, even made into wine. This shrub, indigenous to North America, is fairly easy to grow, but an application of fertilizer for elderberry will help ensure the best fruit set. So how and when is the best time to fertilize elderberry? Read on to fine out. Elderberry Fertilizer Info While elderberries are generally grown for the tasty berry, they are weather hardy (to zone 4) and have aromatic flower clusters which render the plant suitable to grow as an ornamental. Fertilizing elderberries will ensure a healthy shrub and plump, abundant berry production. The berries are rich in vitamin C and contain more phosphorus and potassium than any other temperate fruit crop. As with most fruiting plants, elderberries need well-drained soil
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