Sean, sometimes the owner of a website will allow a member of another website to copy information, which is what JonnaSudenius, owner of www.seedsite.eu has done for atp by allowing me to copy her seed viability information to atp (which I need to do asap). Many years of her personal gardening experience are behind this very useful data, which I hope will be given a sticky in the Seeds forum when I do it. Hopefully that will remain a work in progress as more folks chime in with their experiences on seed viability.
It would be wonderful if the owners of websites specializing in Salvias would do the same for atp, but I don't know how they would feel about it. Their websites are hugely comprehensive in the knowledge they share, and anyone can collect data on salvias from them for personal use.
www.fbts.com sells salvia plants, and encyclopedic information on that website on salvias can be filtered by zone as well as other factors. The owner often participates on this forum and has made many articles about salvias available
http://www.robinssalvias.com/ sells seed of Salvias, and lucky is the gardener who avails himself of that service. Robin's website, to me, is like an art gallery of sages, and I always come away from that website with a renewed sense of wonder about the genus Salvia.
Richard Dufresne is another knowledgeable resource on Salvias, but I don't know if he has been active on this website. At one time, he had lists of salvia seed and plants for sale available, and I'd love to know if he is still active with those.
For copyright reasons, if I understand correctly, we cannot copy data on plants from one website to this one without permission. Others probably know more about that than do I.
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ps - I google the botanical name of a salvia (or any plant) + zone, and that almost always yields useful information on a plant's zone.