I thought I bought a Helianthus Lemon Queen - these are growing and putting on a lovely show (about 6ft) but I'd like to know what they are as I don't think they are Lemon Queen Thank you
Yes, they quickly clump up, and are very easily divided. I've read that they are sterile and don't need deadheading, but we do it anyway. Ours get to about 7ft, which is slightly too big for our borders, but what's not to love about them.
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S.Yorkshire/Derbyshire border
They really are lovely and if they are rudbeckia I am guessing the clumps will increase in size