This post describes my experience grafting Holiday and Daily 11 avocado cultivars onto my old (>20 years) Mexicola tree. Holiday was grafted in 2017 and Daily 11 was grafted in 2019. Holiday graft is a very weak grower. This year I grafted it onto a stronger branch of Mexicola to make sure that it has enough support from the stock tree. Daily 11 is a vigorous grower. Both cultivars fruited first time this year. Daily 11 made just one fruit, and Holiday produced four very large avocados. It seems that July is the month when they are ready here in Davis, CA. Daily 11 fruit is actually fell from the tree. I picked the first Holiday fruit on July 20, the same day the Daily 11 fruit fell. Here they are on the scales in the pictures below. Daily 11 is more elongated.
I wouldn’t call this avocado taste excellent but it is good and has a lot of flesh as the seed was very small. Has a little amount of insignificant fibers.