The plants are very hardy in USDA growing zone 4 but some varieties are suitable to zone 3. Elderberries flower in late June, so the crop is less susceptible to late spring frosts.
What time of year do elderberries flower?
When are elderberries in season? Elderberries ripen between August and October, replacing the elderflower clusters seen in earlier in the year in late spring.
How long does it take for elderberry to produce fruit?
If you want to grow elderberries for their fruits, plant at least two different varieties that are known to bear safe, edible berries. Keep the plants no more than 60 feet apart. Berries may take two to three years to appear.