Reseda phyteuma can reach a height of Template:Convert. It is an annual or perennial plant with erect stems, branched at the base. Leaves are entire, the upper ones with two lateral lobes. The inflorescence, which may take up most of the upper stem, is densely packed with many greenish-white flowers with six petals. They bloom from April to September.
This species can be found in wasteland, walls and vineyards at elevation of Template:Convert above sea level.