That's a good question:
There is no difference between "Blush" and "Blush Tiger". Aaron has added the "tiger" to the end, because there are a series of "tigers" now. But, it is the same old "Blush". Most retail seed companies selling it are calling it simply "Blush".
Earlier in this thread there was mention of a "sunrise tiger" but we have decided not to release that line after all. It had more marbling (more striking color), but it just couldn't compare to Blush in flavor.
On the other hand, Pink Tiger is distinct from Maglia Rosa -- it is a vine, not a bush, and the flavors are a bit different. Maglia Rosa (the bush) is available at
www.growartisan.com. It's a great container variety.