Hello, I have this large perennial plant growing next to my rhubarb. Rhubarb is a well-loved plant because its stems can be used to make amazing desserts.However, rhubarb must be prepared properly because some parts of this plant contain toxins which are very dangerous for consumption. If you are even luckier, it's Gunnera manicata, and will grow to a huge size eventually if protected over winter. Unlike the reddish stems that grow from them, the crown and leaves of the plant are not edible. If the damage is on the leaves - and it looks like large, ragged holes in the leaves, and you do not see a likely culprit when you check the rhubarb during the day, it could be slugs. I'd say you better get it out of there before it produces seeds. The leaves are very large: ~14" wide. To prepare rhubarb for cooking, knowing what the plant looks like is a must.. The stalks of Burdock are hollow, while the stalks of rhubarb are solid. Once it gets larger, it shoots upwards on big, thick stalks and some can get up over 6 feet tall! Still, they are supposed to be edible. Burdock is an biennial plant that reporduces by seed. and another starting up! They look like rhubarb because of the familiar shapes of the leaves, the stem is somewhat similar, but these plants are NOT rhubarb. This huge plant is very popular in gardens, where it’s grown beside ponds and in damp, boggy areas. Steve When the plant starts to grow, it looks a lot like rhubarb except all green. This old fashioned perennial is very easy to grow, coming back bigger year after year with little care. Anyway, the roots are. There are actually a lot of other plants that resemble rhubarb. An invasive, non-native plant. Rhubarb is the first "fruit" of the season - used as a fruit, but grows like a vegetable. I have this HUGE plant overtaking my front garden (it's over 4 feet wide at this point!) Rhubarb crowns are the portions of a rhubarb plant located under the ground's surface that consist of rhizomes and buds. Burdock plants (weeds) can grow to a height of 6 feet, unlike rhubarb plants. grow up to 4ft tall. What looks to me like burdock is the leaf shape but that might vary by rhubarb variety. Don't eat gunnera-manicata. The plant spreads and grows via the rhubarb crowns, and new plants can be propagated by dividing them. Slugs typically feed at night and hide from the heat of the day by returning to the soil / leaf litter below the plants. It sure looks like rhubarb. it's more likely to be something like burdock. It's the tall center one. With huge leaves on long red to green petioles it can also make a dramatic statement in the garden. What should I do with it? The ?flowers? And if you are unsure about any plant that looks like a rhubarb type, don't chance it at all. On some varieties of rhubarb the stalks stay green. It certainly looks like gunnera, the only thing confusing me is that on the BBC entry for it is has "Skill Level - Experienced" and this has sprung up in a patch left completely untended since last spring! They have purple flowers that turn into brown burrs that stick on everything. Is it edible? Or toxic? It is easily recognised by its enormous leaves and spiky stems up to 2m tall. Exotic Looking Rhubarb Plants Fill a Garden Space What's the problem? Surely, breaking a stem and tasting (or even smelling) will tell you if it's rhubarb, NyBoy. This is what rhubarb looks like as a plant: Photo credit: CLG20171/Flickr Rhubarb is naturally tart -- and we mean bone-chillingly tart -- when it's raw, so … But unfortunately, as it sounds like it has come up like a weed, rather than being established in a garden you have just come to (?) It readily escapes from gardens, and is sometimes planted or dumped in the wild. 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