The huckleberry is the state fruit of Idaho.
The name 'huckleberry' is a North American variation of the English dialectal name variously called 'hurtleberry' or 'whortleberry' // for the bilberry. In North America the name was applied to numerous plant variations all bearing small berries with colors that may be red, blue or black. It is the common name for various Gaylussacia species, and some Vaccinium species, such as Vaccinium parvifolium, the red huckleberry, and is also applied to other Vaccinium species which may also be called blueberries depending upon local custom, as in New England and parts of Appalachia.
From coastal Central California to southern Washington and British Columbia, the red huckleberry (Vaccinium parvifolium) is found in the maritime-influenced plant community. In the Pacific Northwest and mountains of Montana and Idaho, this huckleberry species and several others, such as the black Vaccinium huckleberry (V. membranaceum) and blue (Cascade) huckleberry (V. deliciosum), grow in various habitats, such as mid-alpine regions up to 11,500 feet elevation, mountain slopes, forests, or lake basins. The plant grows best in damp, acidic soil having volcanic origin, attaining under optimal conditions heights of 1.5 to 2 m (4.9 to 6.6 ft), usually ripening in mid-to-late summer or later at high elevations. Huckleberry was one of the few plant species to survive on the slopes of Mount St. Helens when the volcano erupted in 1980, and exists as a prominent mountain-slope bush in 2017.
Where the climate is favorable, certain species of huckleberry, such as V. membranaceum, V. parvifolium and V. deliciosum, are used in ornamental plantings. The 'garden huckleberry' (Solanum scabrum) is not a true huckleberry, but is instead a member of the nightshade family.
Huckleberries were traditionally collected by Native American and First Nations people along the Pacific coast, interior British Columbia, and Montana for use as food or traditional medicine. The berries are small and round, 5–10 mm in diameter, and look like large dark blueberries. In taste, they may be tart, with a flavor similar to that of a blueberry, especially in blue- and purple-colored varieties, and some have noticeably larger, bitter seeds. The fruit is versatile in various foods or beverages, including jam, pudding, candy, pie, muffins, pancakes, salad dressings, juice, tea, soup, and syrup. Traditional medical applications included treating pain, heart ailments, and infections.
Two huckleberry species, V. membranaceum and V. ovatum, were studied for phytochemical content, showing that V. ovatum had greater total anthocyanin and polyphenols than did V. membranaceum. Each species contained 15 anthocyanins (galactoside, glucoside, and arabinoside of delphinidin, cyanidin, petunidin, peonidin, and malvidin) but in different proportions.
Huckleberries hold a place in archaic American English slang. The tiny size of the berries led to their use as a way of referring to something small, often affectionately as in the lyrics of Moon River. The phrase "a huckleberry over my persimmon" was used to mean "a bit beyond my abilities". "I'm your huckleberry" is a way of saying that one is just the right person for a given job. The range of slang meanings of huckleberry in the 19th century was fairly large, also referring to significant persons or nice persons.