Q: What makes an air-pruning tray different?
It has slits in the sides and gaps between the cells so air reaches the roots, encouraging a fuller root system than a solid-walled tray would.
AA675 - 72-Cell Air-Pruning Seed Starter

Used by professionals in commercial nurseries, this 72-cell seed starter has slits in the sides and gaps between the cells to provide airflow to the roots and facilitate air pruning.
A hole in the bottom of each cell enables watering from below and allows you to pop seedlings out of the cells for easy transplanting without disturbing the root system or damaging the stem and leaves.
The tray measures 10" × 20", with each cell measuring 1 1/2" square and around 2 1/2" deep. Fits in a standard propagation tray (available separately). Made from thick, durable UV-stable plastic.
Top rack dishwasher safe.
Made in USA.
It has slits in the sides and gaps between the cells so air reaches the roots, encouraging a fuller root system than a solid-walled tray would.
Push gently on the bottom hole in each cell to pop the seedling out without disturbing the roots or damaging the stem and leaves.
Yes, it's sized to fit a standard 10" × 20" propagation tray, available separately.
Yes, it's top-rack dishwasher safe.
| Materials | UV-stable plastic |
| Dimensions | 10" × 20" tray; cells 1 1/2" square × approximately 2 1/2" deep |
| Compatibility | Fits standard propagation trays |
| Includes | 72-cell seed starter tray |
| Package Quantity | 1 item |
| Country of Origin | USA |
| Warranty | Lee Valley Satisfaction Guarantee |

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72-Cell Air-Pruning Seed Starter
Used by professionals in commercial nurseries, this 72-cell seed starter has slits in the sides and gaps between the cells to provide airflow to the roots and facilitate air pruning.
A hole in the bottom of each cell enables watering from below and allows you to pop seedlings out of the cells for easy transplanting without disturbing the root system or damaging the stem and leaves.
The tray measures 10" × 20", with each cell measuring 1 1/2" square and around 2 1/2" deep. Fits in a standard propagation tray (available separately). Made from thick, durable UV-stable plastic.
Top rack dishwasher safe.
Made in USA.
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