Maybe you only have space for one avocado tree, but you want maximum fruit production. You could try keeping a small tree of the opposite flower type (A/B) in a container next to your main tree. During spring when they’re both in bloom, the bees can use the pollen from the container tree to pollinate the flowers of the main tree.
I got this idea from a gardener friend who kept a potted Zutano (B type) next to her Don Gillogly (A) and Holiday (A) trees. She called the Zutano her “stud.” And it seemed to be working, as her main trees were setting more fruit than they had in previous years.
Here’s a video showing an Edranol (B) avocado tree in a container placed next to a larger Gwen (A) avocado tree in my yard, and showing how the bees easily move from the flowers of one tree to the other, making cross pollination — and higher fruitset — likely.
Update June 9, 2021:
The Gwen is now done flowering. How is the fruitset?
The fruitset is very good, as you can see in this follow-up video:
A few extra details: I had the Edranol beside the Gwen from April 13 until it stopped flowering at the end of April.
At that time, I moved the Edranol and placed a different (unnamed) B-type avocado in a container that was blooming beside the Gwen. I kept this second mobile pollenizer tree beside the Gwen until May 26. Both the container tree and the Gwen wrapped up their bloom season about then.
I tagged some inflorescences on the Gwen in mid April and again at the end of April to try to gauge the effectiveness of the pollen of each B-type container tree. Fruitset was good during both periods, but it was even better during the latter.
But was this due to the mobile pollenizer trees, or was it due to weather conditions, extra bee activity, or other factors? We can’t know.
I’ll tell you what I’ve done though. I’ve planted those two B-type trees near my Gwen.
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