Drosera arcturi is a perennial, insectivorous species of sub-alpine or alpine herb native to Australia and New Zealand.

[3] The leaves of D. arcturi are linear, 1–5 cm long, undivided, and range in colour from pale green to muddy brown, to maroon if subjected to full sunlight.

Like all other species of Drosera, D. arcturi catches insects using sticky, glandular hairs on its leaves.

[3] D. arcturi is a summer grower, and after flowering its leaves gradually reduce in size to form an elongated, horn-shaped hibernaculum.

The hibernaculum is normally buried near the surface of the soil or moss and is usually covered with snow for several months during winter.