11/25/2025
Citrus, olives, and bananas in Philadelphia?
Check out our new POP High Tunnel blog post via the linktree in our bio for exciting updates on this project!
Sounds pretty wild, yet these are all plants POP is experimenting to explore the possibilities for high tunnel fruit production in our city and region. In 2023, POP constructed two high tunnels at our headquarters at The Woodlands in West Philadelphia. A high tunnel is an unheated hoophouse structure, using only the sun’s energy to keep plants warmer.
One of the high tunnels is being used to grow a zone 8 food forest and explore new fruits and other plants from a slightly warmer climate. Philadelphia is currently listed as climate zone 7B, thus we are trying plants from one zone further south (adapted to lows around 10 to 20 degrees F). Part of this project is preparing for continuing climate change, helping to understand how to grow plants that we expect will soon be viable outdoors in Philadelphia. This new plant knowledge can then be shared with our community orchard partners across the city to expand the plant palette. Even before the climate changes, many of our urban farm partners already have existing high tunnel structures that could be used for these perennial crops in addition to the annual crops they already grow.
So what are we growing in the zone 8 food forest?
Zone 8 plantings include bananas, olives, hardy citrus (yuzu, kumquat, and citrumelo), loquat, pineapple guava, Korean tea, and capers, as well as herbaceous companions such as turmeric, ginger, lemongrass, and zaatar oregano.
We are also growing more temperate plants to get different seasons of production, including figs, pomegranates, strawberries, blueberries, and blackberries.
Read more about how all these plants fared via our linktree!
1. Open orchard tour of POP’s zone 8 high tunnel.
2. Map of what’s currently planted in the high tunnel.
3. First yuzu fruit!
4. Caper berries and flower.
5. Fig season extended into November in the high tunnel.
6& 7. Prolific squash growing as understory crop.