I am looking for tall plants, over 1.5 metres, to plant behind or with grasses, similar to Sanguisorba but with bottlebrush type flowers in yellow. The closest I can find is Thalictrum Flavum Glaucum with Chatto which rise to 1.5m and the pic shows small yellow flowers of the size I want on long thin stalks which would be ideal . But on looking at other pictures from other companies the same plants have flowers that are far larger, closer together and not on thin stalks. I know the camera can lie so can anyone tell me if this Chatto version does exist except in the first weeks of flowering as opposed to the more common version on all other sites