New info. Clarence Falstad from Walters Gardens informed me that alcohol may not kill the virus. He said that it only kills by dehydrating, but a virus does not actually contain moisture. He said heat is the only way to kill and that temps need to be 60 to 90 degrees C to do the trick. He suggests alternating tools to divide and heat the blade with a butane torch between batches of plants
Since ammonia also kills by dehydrating that might not work either. If bleach works by oxidizing then it might be a better solution. I'll try to confirm that.
And now some really bad info. We had more plants tested, and the results are not encouraging. The following plants from Holland growers have tested positive for virus:
Undulata Albomarginata, Paradise Joyce, El Nino
I still don't know if all of our El Nino were affected or just this year's plants. The virus is so low in this year's El Nino that it would not show any signs yet, so was most likely contaminated at harvest at the growers. We will get samples of last year's El Nino tested right away.
Until I know about our El Nino from last year I would hold off on destroying them since we shipped from both batches this year.
The plants that tested positive for virus have been:
Striptease, Stiletto, undulata albomarginata, Paradise Joyce, Gold Standard (we never shipped or sold these because of the known possibility), Sum and Substance, El Nino, Golden Tiara, Goldrush.
The plants that tested negative have been: Bottom Line, Paul's Glory, Guardian Angel, American Halo, Stiletto grown here, Moonlight, 2 new batches of Striptease, lancifolia, So Sweet, Fortunei Albopicta, ventricosa aureomarginata. These were picked because of their proximity to the other plants, because they came from the same growers, and also because a few people inquired about plants on their order.
We will continue testing, even if it means testing every single plant in the nursery