Expert Advice for Home Improvement & DIY Repair
Drip Emitter Guide
How to choose and place drip emitters throughout your yard and garden
The chart below outlines the number and capacity of emitters (in gallons per hour) required for various types of plantings throughout a yard and garden. Ranges are provided in certain cases because no two soils are alike. In those cases, choose the higher number for light soil that drains rapidly and the lower number for dense soil that retains moisture.

 No. of EmittersOutput Placement
Vegetables
(closely spaced)
11/2–1 gph every foot
Vegetables
(widely spaced)
11–2 gph base of each plant
Flowerbeds11 gph
base of each plant
Ground Covers
11 gph
base of each plant
Shrubs (2-3 feet)121 gph
base of plant
Trees & Shrubs
(3-5 feet)
21 gph
1/2–1 foot away from trunk
Trees & Shrubs
(5-10 feet)
23 2 gph
2 feet away from trunk
Trees & Shrubs
(10-20 feet)
3–42 gph
3 feet away, at dripline
Trees (over 20 feet)62 gph
4 feet away, at dripline

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