How many emitters per plant?

Depends on plant size and soil. Small plants 1-2; trees/shrubs 4-8+ for even wetting.

Emitters spaced so wetting patterns overlap slightly (e.g. 12-18" for many soils).

Emitter Count Calculator

Determine the maximum number of drip emitters that can be run on a single irrigation zone based on your system\

Determine the maximum number of emitters a single irrigation zone can support based on its total flow rate.

Total Zone Flow Rate (GPM)

Single Emitter Flow Rate (GPH)

The full supporting guide for this calculator is still being expanded. The tool remains accessible while we improve the educational content.

Continue with calculators that answer nearby questions and help compare the next step.

Calculate the flow rate of your irrigation system in gallons per minute (GPM) using the simple bucket test method.

Calculate the ideal runtime for your drip irrigation system based on emitter flow rates and desired water per week.