when i googled b complex.. all i got was vitamins..

care to better describe what you are talking about???

ken

ps: what made you think to grind up your daily vitamin and feed it to your plants???

It's a pretty commonly used snake-oil potion. People talk about it pretty frequently in the Trees and Shrubs Forums. When used for transplants or cuttings, I think its only benefit is to the wallets of the sellers.

Linda Chalker-Scott's The Myth of Vitamin Stimulants

CO State Coop. Ext.'s Beware of Gardening Myths

AZ Coop. Ext. on Vitamin B-1 and Root Stimulators

UC, Davis article

It worked for me, and cheaper than B1 rooting stimulant. I'm telling you, had hardwood leafless crape myrtle sticks in soil for months. No roots and started rotting. I pulled them out, cut off the rot with a knife, left them in a mixture of b-complex, cane sugar, and a little apple cider vinegar, and they had roots within two weeks. They haven't leafed out, but I'm going to fertilize the cuttings this weekend with a little miracle grow.

There are way too many variables for us to know what happened in this particular case. That's one reason scientific studies (where variables are controlled and control-samples are used to help eliminate unknown variables) are so valuable. Just about all snake-oil potions have their believers/advocates, but that doesn't make them reliable. Anecdotal evidence has little real meaning until you have a lot of it or until it is gained while at least partially following good sound scientific method.

Ive heard good things about giving cuttings a superthrive bath (diluted of course) Prior to hormone and placement in rooting medium.

Application of vitamin B-1 (thiamine) to root systems of whole plants does not stimulate root growth. This myth arose from early work on plant growth regulators, called auxins, which were mixed with vitamin B-1. Further research throughout the last half of the 20th century investigating the application of auxins to root systems suggested that auxins may stimulate root growth, but that vitamin B-1 on its own does not. Delving deeper into manufacturer claims, many rely on early research (late 1930s and early 1940s) which has been refuted by subsequent research and/or research done on plant roots excised from the mother plant or grown in artificial media.

Here is a link that might be useful: B-Complex busted/explained.