Moonflower seeds-testing for viability-Sink or float?
Ok, I read on the forum here recently that some people have a hard time getting their morning glory and/or moonflower seeds to germinate.
I know about scarifying (sp?) the seed coat, and soaking seeds for a day or so to help. However, I also read a few years back somewhere that, in general, it is easy to tell if a seed is viable or not by putting them in water. Supposedly, if they sink, they are more apt to be viable, and the ones that float might not germinate.
Does anyone here know this to be true? I just did this with 9 Burpee moonflower seeds that I just purchased tonight at Walmart. 5 immediately went to the bottom, and 4 are floating. What do you think?
Thanks! :0) Phyl