Growing Saguaro cacti from seeds, Sonoran desert, 2021 update

This update covers my new crop which are 2 years old now. They are much healthier than my original crop which are 5 years old now. I update their heights on the graph showing the measured heights of naturally occurring Saguaros.

link to first Saguaro growing video: https://youtu.be/tC9uaLUca2k

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