GEM avocado trees pollenized by a Bacon 

I've noticed the same with my Pinkerton.

The Bacon does have a lot of fruit also.

I don't think it matters since it is flying insects that move the pollen between the trees. If you watch them work, you see bees and flies go between the trees no matter the direction, as far as my observations go. The most important factor is distance between the trees: the closer, the better.

Hi Joe, Thanks! Those GEMs are on a farm in Fallbrook (not mine) and they are 5-6 years old.

Maybe. Some people are beginning to study this right now, but I don't know of any studies finished on it yet. In some studies in the past with Hass, different B types have pollenized more effectively in different locations so that might be the case with GEM too. Regardless, having any B type always got Hass to yield more (over the course of a number of years) compared with no B type.

I think any B type will help any A type, and even an A type will help an A type (to a lesser degree), especially in certain years like this one where the spring weather is very cool. But studies have found that some B types are more effective as pollenizers than others. Bacon has always done pretty well in those studies, as has Zutano and Ettinger. Fuerte and Sir-Prize have done well too. (Hass is usually the A type used in these studies.)

So true Randy!