Backfill With No Structure: Gel in Compacted Urban Tree Pits
Why gel fails in rammed street tree backfill, the decompaction and placement sequence that makes 1 kg/m³ work, and the spade check after first rain.
Street Tree Pits: Fixed Soil Volume, Fixed Budget, How Much Gel?
Landscape and street tree planting is where gel dosing gets argued about most, because the tree pits are small, the soil is often compacted subsoil, and the maintenance budget for watering runs out in week ten. The temptation is to load the pit with polymer and call the watering contract done. That …
