green unripe fruits of eastern american black walnut, a species of deciduous tree in the juglandaceae family

agriculture america american banded benefits black botanical botany branch butterfly caterpillar day deciduous eastern ecology edible environment family farming flora foliage food forest fresh fruit fruits garden genus green growing growth hairstreak harvest health healthy herbal host husk juglandaceae juglans leaf leafy medicine native natural nature north nuts nutshell organic outdoors parks plant ripe rounded sanctuary source species squirrels summer summertime sunny tree unripe walnut yellow