10/30/2025
Tree Netting Update 🍐
In late July, POP staff at the Learning Orchard implemented tree netting as an alternative to fruit bagging as a physical control against pest predation in the orchard.
The Asian Pear row was selected for the experiment since it experienced heavy squirrel predation and crop loss in 2024: 1 tree was covered in netting (The cultivar “Chojuro”), 1 tree had some nylon fruit bags (the cultivar “Korean Giant”) and the remaining trees in the row were left without any sort of barriers or coverings (the cultivars “Shinseiki,” “Shinko,” and “Tsu Li”)
Due to lower mammalian predation on pome fruit this season, crop loss between the three various controls were more or less the same and overall the trees experienced significantly less predation than in previous years, with the “Tsu Li” and “Shinko” bearing significant harvests since being planted!
A possible explanation for this could be due to less drought-like conditions in the orchard, with Philadelphia experiencing a small increase in rain this season compared to last year.
POP staff will continue to experiment with tree netting next season to compare to this season’s findings! It is possible that changing conditions will impact the results of tree netting vs. fruit bagging vs. none of the above. Though having more fruit is always welcome, it would be great to see these controls in action so we can execute targeted controls to decrease future mammalian predation not only at the POP learning orchard but in community orchards across the city that may not be as lucky as we were this year!
Image Descriptions:
Image 1
“Chojuro” Asian Pear tree covered in a tree net
Image 2
Sharon holding the ripe “Chojuro” Asian Pear after harvest
Video 3
Sharon uncovering the sox from the “Korean Giant” Asian Pear
Image 4
Sharon holding the “Korean Giant” pear after harvest
Image 5
The “Tsu Li” Asian Pear almost ready for harvest, which was covered with neither netting nor a fruit bag
Image 6
The “Shinko” Asian Pear after harvest, which was covered with neither netting nor a fruit bag