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Questions and Answers: 2018

Question: I have been looking at Rudbeckia laciniata, but now am too late in the season to check on whether the …

• Question

  I have been looking at Rudbeckia laciniata, but now am too late in the season to check on whether the ray flowers are in fact flowers with potential for fertilization, at least in the right season. Thanks.

  Answer

  Dear BKDBCR37, good morning. The ray flowers are neuter (i.e., sterile) in the genus Rudbeckia, so you would need to use disk flowers for fertilization. Best wishes.