Washington City was founded in 1857 by LDS pioneers sent south from Salt Lake under Brigham Young's "Cotton Mission" — an effort to establish cotton agriculture in the warm Virgin River basin that could supply territorial textile needs during the Civil War cotton shortage. The cotton fields ran for several decades. The industry collapsed by the 1890s, partly because the cotton wasn't great and partly because the post-war national market made local production uncompetitive. The mills closed. The fields became orchards and then subdivisions. Cotton Days, the annual late-April festival, is the town's continuing acknowledgment that cotton is why it exists.
The Format
Cotton Days runs Thursday through Saturday. The kickoff is Thursday-evening live music at Veterans Park. Friday is the kids' carnival and the demolition derby. Saturday morning is the 5K fun run and the parade down Telegraph Street, the historic main commercial spine of Washington City — past the old Cotton Factory building (the 1865 stone mill, restored as a community landmark), past Pioneer Park, into the modern downtown. Vendor booths run through the afternoon at Veterans Park. Live music continues into the evening. Fireworks after dusk.
The Cotton Factory
The 1865 cotton mill — the Washington Cotton Factory — still stands on the corner of Telegraph and 300 East. It was the largest cotton mill west of the Mississippi when it opened. The building functioned as a textile factory until the industry's collapse, then was used as a flour mill and a warehouse, and is now a restored historic site. During Cotton Days the building hosts open-house tours, period demonstrations, and the festival's de-facto historical anchor. The building is the reason "Cotton Days" still has a referent rather than being a name without a building behind it.
Why Late April
The festival timing — late April — works because Washington City's spring is the agricultural-heritage moment, not the harvest moment. Cotton in the basin was historically planted in spring and harvested in fall, and the festival's late-April slot maps to the planting end of that calendar. The weather cooperates: 75-degree days, dry, post-monsoon, pre-summer-heat. The festival sits between the St. George Art Festival on Easter weekend and the IRONMAN 70.3 in early May — a working-class community festival between two national-scale tourism events, and the contrast is part of what gives it texture.