蜡菊（学名：Helichrysum bracteatum），又名麦杆菊、七彩菊、不凋花，菊科多年生草本植物，但常作为一年生植物栽培，株高可达120厘米，原产于澳大利亚，中国已大量引种这种菊花，是优质的花坛和插花、干花原材料。花期夏初至秋末，茎坚挺，叶细长，头状花序，花色有红、黄、橙、白和紫色等颜色，舌片具金属光泽，大型苞片光泽纸质，花朵直径3－5厘米。

蜡菊被证明是非常适合于园艺种植。自从1850年代，它就在德国发展起来并传播。

Xerochrysum bracteatum, commonly known as the golden everlasting or strawflower, is a flowering plant in the family Asteraceae native to Australia. Described by Étienne Pierre Ventenat in 1803, it was known as Helichrysum bracteatum for many years before being transferred to a new genus Xerochrysum in 1990. It grows as a woody or herbaceous perennial or annual shrub up to a metre (3 ft) tall with green or grey leafy foliage. Golden yellow or white flower heads are produced from spring to autumn; their distinctive feature is the papery bracts that resemble petals. The species is widespread, growing in a variety of habitats across the country, from rainforest margins to deserts and subalpine areas. The golden everlasting serves as food for various larvae of lepidopterans (butterflies and moths), and adult butterflies, hoverflies, native bees, small beetles, and grasshoppers visit the flower heads.