That's interesting. I have a fondness for high pH soils and plants that grow well in them. However, we're using a lot of peat moss this year to help acidify the soil. There was too much wood ash in it (and it seemed like it would be a good buffer to allow me to use some rockdust without raising the pH too high).
I hear mulberries grow well in caliche, which has a high pH. Have you ever grown mulberries? They're pretty good. I eat dried white mulberries a lot. The white and black species have different health properties, in my experience. They both taste good, and about the same, but the black ones are fruitier—at least with the varieties I've tried. I've never tried the red mulberry species, red/white hybrids, Pakistan mulberries, etc. There are a whole bunch of species in China and other areas that aren't so well known in the USA.
Oh, since I mentioned zinc and phosphorus, I should probably also mention that both pH and phosphorus levels are said to affect zinc availability. It probably depends on what kinds of zinc salts they are, and what is in your soil, as to whether it makes them more or less available. I'm using zinc sulfate monohydrate, and the bag says to use more if the pH or phosphorus is high (so, that might account for that kind of zinc).
I think my lettuce has appreciated zinc more than anything, though. It seems greener and is growing faster. It's probably too early to tell with everything else I gave it to.
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