Blc. orphan: inflorescence "stalks" fail to develop; dry and die

[awharvey]

I use Super Thrive at 16 drops per quart, which I believe works out to about 2/3 tsp per gallon.

[Roberta]

Originally Posted by awharvey

I use Super Thrive at 16 drops per quart, which I believe works out to about 2/3 tsp per gallon.

Are you talking about the fertilizer or the "vitamin" formulation? I know there is some confusion there, the "supplement" manufacturer merged with DynaGro (that sold mostly fertilizers, and now there's a line of fertilizers under that name but they're also selling the "vitamins" under the same name. The "supplement" or "vitamin" formulation is supposed to be used at 1-2 drops per gallon... I used it for a couple of years as a supplement to my fertilizer at that low level, and started to see mutations in flowers, especially in the Cattleya tribe. I stopped using it and the problem went away. But we may not be talking about the same stuff. Ray can advise here.

[awharvey]

Yeah, that seemed needlessly confusing. I started using Dyna-Gro when I switched to hydroculture, and I've always kept my concentration a bit lower than the 1 tsp. per gallon recommended for non-circulating hydroponics. However, now that I think about it, this may not be appropriate for orchids in a typical orchid bark mix.