fast growing

Trumpet bush Cecropia peltata showing a section of a much larger tree

Trumpet bush Cecropia peltata pen and ink line drawing

Giant kelp Macrocystis pyrifero illustration from A Life on Our Planet by David Attenborough

Sweet Pea flower Lathyrus grandiflorus without leaves

Japanese Hop Humulus japonica habit drawing showing how the plant climbs and spreads

Hybrid knotweed Fallopia japonica x Fallopia sachalinensis showing stem, flowers, leaves, and typical growth habit

Japanese Knotweed Fallopia japonica plant including roots underground

Fat hen Chenopodium album pen and ink illustration with detail of one flower

Japanese knotweed Fallopia japonica root crown with cross section of root and detail of pink growing tips

Larch Larix decidua sprig with mature cone and young flower detail

Giant hogweed Heracleum sphondylium with stem cross section and lots of leaves

Fat Hen Chenopodium album with pale underside of leaf showing along with green flowers