unripe green sweet chestnut fruits and leaves - castanea sativa

autumn autumnal backdrop background biological biology botanical botany branch bristling castanea chestnut closeup deciduous ecological ecology ecosystems edible environment environmental fagaceae fagales fall focus forest fresh fruit fruits garden green immature leaves magnoliophyta magnoliopsida medicinal natural nature nut nuts organic plant pods prickle prickly sativa seedd seedpods seeds selective species spikes spiky spinous sweet thorns thorny tree unripe wild