Dry winter and spring – Trees temporarily coping with drought stress, or lacking a seasonal substitute for an irrigation system, can benefit from subsurface watering.
This “green innovation” gets to the root of the problem–and it’s easy to implement. By placing water below grade, it is more efficiently distributed and less likely to run off or evaporate. The soil injection technique also bypasses slow soil infiltration rates of soils that contain high clay content, making it a viable alternative to surface watering.
The injection of water under pressure into the soil may also provide some soil compaction relief–an added benefit for your trees.