From candles to drinks, fall is an increasingly big deal for retailers.Gabbi Shaw/Business InsiderFall has become its own sales season for major retailers.This year's fall-themed products include pumpkin samosas from Trader Joe's and candles from Aldi.The items fill a gap in the traditional retail sales calendar, one market expert said.Fall has arrived in the US — and it's not just a season, but a shopping event.Starbucks' pumpkin spice-flavored drinks have been an autumnal staple since the PSL was introduced in 2003, but multiple retailers are now offering wide selections of other fall-themed products.