The Q&A Archives: Starting Rudbeckia Seeds

Question: I planted Rudbeckia Goldsturm seeds indoors 27 days ago, and only 2 of the 25 seeds have germinated. I sowed them in Jiffy 7's, and have kept them at 70-75 degrees and evenly moist, and they are under flourescent lights. I've had no mold problems. The seed packet says they germinate in 21 days. What do you think the problem is?

Answer: Usually these germinate fine at about 65 degrees, so I would have expected them to germinate quickly at your warmer temperature. One possibility is that they were planted too deep and have now rotted, but that is an outside chance. Sometimes these seeds will germinate easily and sometimes not, as you have discovered. A cool stratification period may do the trick. You might try chilling them (a refrigerator is good) for about a month and then bring them back into the warmth and see if they germinate.

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