Superthrive

[BrianBay9]

I have used superthrive for cuttings. As I am doing the cuttings I put them in a container with superthrive and water before potting them. It may do nothing for them I don’t know but it’s not very expensive.

So, plant half with Superthrive and half without, and see if you think there's a difference.

 

[rockm]

https://s3.wp.wsu.edu/uploads/sites/403/2015/03/vitamin-b1.pdf

 

[Leo in N E Illinois]

The good news is Superthrive is "mostly harmless", use it if it makes you feel better.

I just read @rockm 's linked article. Superthrive is just "snake oil". Thanks

 

[River's Edge]

My favourite summary of this topic goes as follows.
"Vitamins do not need to be added to a plant at any time because they are made by and already in the plant.
Adding B-1 has absolutely no effect at all on bonsai or on any other plant."
Quote from Modern Bonsai Practice, Larry Morton , 2016 page 67.
research referenced