Inserted deep into the soil, this watering spike supplies water at the root level, encouraging deep root growth while minimizing loss to evaporation.
Made of a tough ABS/PVC composite, the 14" long hollow perforated spike has a fabric liner that lets water seep through slowly while blocking roots from penetrating. You can even add granular fertilizer after driving in the spike with a mallet. A slot in the cap permits connection to a 1/4" irrigation line, or you can simply position a regular garden hose over the open top and let water trickle in slowly.
An excellent way to water trees and shrubs.