Last year I bought some Dutch plants from one grower that were billed as "guaranteed" HVX free and one out of 4 batches were infected badly. The others checked out okay so far, but still, the guarantee meant nothing.
Last year I also bought some plants from another Dutch grower and was told they were tissue culture plants that had never been in the field. 5 out of 7 different plants purchased tested positive for HVX, and one batch wasn't even the correct plant so I didn't bother wasting my money to test them.
Then another Dutch grower sent me 3 batches of plants and 2 of the 3 were infected with HVX.
So 8 out of 14 batches were positive for HVX and one was mislabeled. That is a horrible rate of infection for so called "HVX FREE" plants!
Since the Dutch can't get their act together to control ANY virus problems the only choice is to boycott ALL of their plants. We've seen cucumber mosaic virus, tobacco rattle virus, arabis mosaic virus, hosta virus x, and several other unknown viruses on a wide variety of plants - and they just don't seem to care one bit about cleaning things up.
I am really sorry, but I think the USDA needs to get involved and either ban the Dutch imports all together or institute a post entry quarantine. This virus situation is getting out of control. If you are a grower buying from the Dutch you really need to reconsider. If you are a gardener, ask your suppliers if they know the origin of their plants. It doesn't matter if they were grown in the US or purchased from a US distributor - the origin might still be Dutch.
Get to know your nursery owners and keep a watchful eye out to keep these things out of our gardens.
Stepping off my soapbox now.
Chris

