Leaves – the leaves are big, and can measure up to 1.5m large and 3m lengthy, and are sometimes divided into smaller leaflets. The Woodland Trust says they’re alike to rhubarb leaves, with jagged edges and the underside of the leaf being furry.
Flowers – the flowers of the large hogweed seem in June and July, and are small and white. They seem in clusters on “umbrella-like heads” that face upwards.
Seeds – the seeds are dry, flat and oval. They are nearly 1cm lengthy and tan colored with brown traces.
You can see the distinction between large hogweed and regular hogweed from the leaves.
Regular hogweed leaves are extra spherical, in distinction with the jagged edges of the large hogweed leaves.