acai berry, a purple to black fruit

food berries plant fruits berry blackberry acai healthy elderberry tree juicy vegetable violet wildflower fruiting field red ripe botanical muscari springtime health homegrown plants elder autumn organic botany branch outdoor wild nature garden purple green closeup flora natural summer background blue blossom floral bloom fresh flower blooming gardening akai keywords shutterstock black fruit type palm grows amazon delta brazil brazilians believe strength energy endurance