Plusia festucae (gold spot) is a species of moth of the family Noctuidae.

Forewing deep golden brown, with a golden metallic sheen at base of costa, on inner margin of median area, and on an oblique patch before apex; lines all oblique, dark brown; veins dark brown; at base of vein 2 a large silvery rounded blotch, with a smaller, more elongate, one beyond it; the lowest streak of the apical blotch, below vein 6, and a spot at base of costa are also silvery; hindwing bronzy fuscous, with pinkish fringe.

[1] The moth flies from June to September depending on the location.

The larvae feed on Carex, Sparganium erectum, Iris pseudacorus and Alisma.

[2] Pupates in a whitish cocoon on the underside of a blade of grass, doubled over for the purpose.