US State Flags with Plants and Trees

South Carolina's flag is the clearest plant flag in the United States. A white Sabal palmetto — the state tree — stands at the center of an indigo blue field, with a white crescent in the upper left. No seal, no text, no coat of arms. The design is immediately legible from any distance. Its simplicity places it among the top-rated US state flag designs by vexillological standards.

The palmetto's place on the flag comes from a specific battle. In June 1776, at Fort Moultrie on Sullivan's Island, a small South Carolina garrison held off a British naval attack. The fort was built from Sabal palmetto logs, whose spongy wood absorbed and deflected British cannonballs rather than splintering under impact. The palmetto came to stand for resilience under attack.

Connecticut's flag shows a white shield on blue with three white grapevines — each bearing grapes — arranged vertically. Below the shield, a white ribbon carries the Latin motto 'Qui Transtulit Sustinet' (He who transplanted still sustains). The grapevines symbolize the settlers transplanted from England to the New World who continued to flourish. The design dates to Connecticut's royal charter of 1662, making it one of the oldest state symbols still in continuous use.

Mississippi held a statewide flag referendum in 2020 after the state legislature voted to retire the 1894 design, which incorporated the Confederate battle emblem. The replacement — the Magnolia flag — features a white magnolia blossom at center on a blue field, with a gold border, a red stripe, and a canton of 20 gold stars in the upper left.

The magnolia blossom is Mississippi's state flower and appears on the state tree (the Southern Magnolia, Magnolia grandiflora). The flower was a conscious choice: recognizable as distinctly Southern, not politically charged, and familiar to every Mississippi resident. The design was selected by a commission and ratified by voters — one of the most transparent flag adoption processes in US history.

Mississippi's Magnolia flag is the most recent plant flag in the United States, adopted January 11, 2021.

Maine's state flag shows the state coat of arms on a blue field. At the center of the arms, a moose reclines beneath a white pine tree — the moose and pine together are the two defining elements of Maine's wilderness identity. The pine tree also appears in the upper-left corner of the shield. Maine adopted this flag design in 1909.

Vermont's flag shows the state coat of arms on a blue field, with a landscape scene: a large pine tree at the left, mountains in the background, a cow, sheaves of grain, and a deer's head. Unlike Maine's heraldic moose, Vermont's tree is part of a pastoral landscape. The pine represents Vermont's Green Mountain forests and the lumber industry. Vermont last updated the flag design in 1923.

Both pine tree flags are 'seal-on-blue' designs where the tree is embedded in a complex scene. At normal flag-viewing distance, the trees are not clearly distinguishable — unlike South Carolina's dominant palmetto or Connecticut's three visible grapevines.