Best drip irrigation systems for trees: 7 kits for root-zone watering

Trees need a layout that reaches the root area without pretending that one emitter position fits every planting. DIG GE200 leads this group because its kit includes 200 feet of 1/2-inch tubing, 50 feet of microtube, 20 1-GPH emitters, and 11 adjustable micro-sprayers. That mix gives you more ways to serve trees in beds and open landscape areas.

DIG G77AS is the better choice when trees sit among shrubs and flower beds and each plant needs a point-source emitter. GF100 is for an elevated rain-barrel source. The smaller ML50 and Rain Bird kits can work around a tree only when the tree is part of a defined bed, not as a complete large-tree watering plan.

She Gardens used locked manufacturer records and did not test these systems. Product pages do not replace an arborist, local watering guidance, or a check of soil and tree needs. Treat coverage and flow as product claims, and verify current stock and compatibility before buying.

Tree irrigation comparison

Product	Best fit	Useful evidence	Main drawback
DIG GE200 Drip and Micro Sprinkler Kit	Mixed tree area	20 emitters; 11 sprayers; 200 ft supply tubing	More layout work
DIG G77AS Landscape Drip Watering Kit	Trees with shrubs	Point-source emitters; filter and pressure control	Coverage is not stated
DIG GF100 Gravity Feed Drip Kit	Trees from a rain barrel	100 ft drip tubing; 50 drippers	Requires elevated source
DIG SM500 Adjustable Micro Sprayer Kit	Broader tree beds	Adjustable spray for trees and shrubs	Wind and evaporation exposure
DIG SM50 Adjustable Micro Sprayer Kit	Small tree pocket	Adjustable spray for small beds	Coverage is not stated
Rain Bird Raised Bed Garden Kit	Tree in a standard bed	4-by-8 ft layout; 35 ft emitter tube	Bed-focused format
DIG ML50 Raised Bed Drip Irrigation Kit	Tree beside a raised bed	Five 10 ft lines; 9-inch spacing	Small starting area

Best mixed kit for trees: DIG GE200

GE200 is the most versatile record in this group. DIG lists up to 700 square feet of coverage, expansion beyond 1,000 square feet, 200 feet of 1/2-inch tubing, 50 feet of 1/4-inch microtube, 20 1-GPH emitters, and 11 micro-sprayers on the manufacturer page.

Point emitters suit trees that need individual delivery points. Adjustable 360, 180, and 90 degree sprayers suit a planted area where a wider patch is appropriate. Those two approaches should not be treated as identical. Draw the tree area and decide which plants need a point and which need a pattern.

Pros: 20 emitters; 11 adjustable sprayers; long 1/2-inch supply line; documented area and expansion.

Cons: More parts to arrange; spray is more exposed to wind; actual tree coverage depends on layout.

Check the current DIG GE200 listing

Best for irregular tree plantings: DIG G77AS

G77AS is built around landscape plantings rather than a rectangular bed. DIG lists a faucet connection, filter, pressure regulation, distribution tubing, and point-source emitters on the product page. The stated compatibility includes shrubs, trees, flower beds, and mixed landscape plantings.

The source does not give exact coverage. That keeps G77AS behind GE200 for a tree group where you need a published area estimate, but it is an advantage when the planting is irregular and the route must be designed plant by plant.

Pros: Point-source layout; tree and shrub compatibility; filter and pressure regulation; flexible distribution.

Cons: Coverage is not stated; exact warranty and stock are not stated; more measurement is required.

Check the current DIG G77AS listing

Other tree-area choices

DIG GF100 for a rain barrel

GF100 is designed for an elevated rain barrel or another low-pressure source. DIG lists 100 feet of 1/2-inch drip tubing, 50 feet of microtube, 50 button drippers, and a 155-mesh filter on the manufacturer page.

It is useful when the tree area is already organized around a reservoir. Reservoir height matters, and the record does not state an automatic controller. Plan the fill and inspection routine as part of the system.

Pros: Source-matched for an elevated rain barrel; 50 drippers; long main tubing; filter included.

Cons: Depends on reservoir elevation; no documented automatic controller; not a pressurized faucet kit.

Check the current DIG GF100 listing

DIG SM500 for a broad patch

SM500 is aimed at landscape beds, shrubs, trees, and greenhouse areas where an adjustable micro-spray pattern fits. DIG gives that use on its product page, but the locked record does not state coverage or included-part count.

Pick it when the tree area is a broader planting pocket and a spray pattern is acceptable. Spray is less precise than a point emitter and more exposed to wind and evaporation.

Pros: Tree and shrub compatibility; adjustable pattern; useful for broader beds.

Cons: Coverage is not stated; spray can drift; less targeted than point-source watering.

Check the current DIG SM500 listing

DIG SM50 for a small tree pocket

SM50 is listed for small beds, greenhouse benches, and landscape pockets on the DIG page. It can suit a small tree pocket when a single adjustable spray pattern reaches the area. The source does not state coverage or included-part count.

Pros: Small-area focus; adjustable spray; suitable for landscape pockets.

Cons: Coverage is not stated; spray may wet foliage; not a full tree-zone kit.

Check the current DIG SM50 listing

Rain Bird for a tree in one bed

Rain Bird is bed-focused, not tree-focused. The manufacturer page lists a 4-by-8-foot layout, 35 feet of 1/4-inch emitter tubing with 6-inch spacing, 25 feet of distribution tubing, a 25 PSI regulator, and a filter.

It can fit a tree planted inside a standard bed, but the spacing and area are set up for that bed. A tree outside the bed needs a landscape-oriented kit.

Pros: Clear 4-by-8-foot layout; close emitter spacing; regulator and filter included.

Cons: Not a broad tree system; fixed bed format; exact tree coverage is not stated.

Check the current Rain Bird listing

DIG ML50 for a tree beside a bed

ML50 is another bed module. DIG lists five 10-foot lines, 9-inch emitter spacing, up to 150 square feet, and expansion beyond 700 square feet on the model page. It includes a 25 PSI regulator, filter, backflow preventer, and supply tubing.

Use it for the bed around a tree, then confirm that the line arrangement reaches the intended root area. It is not a substitute for a complete landscape tree layout.

Pros: Defined lines; documented spacing and area; pressure parts included; expansion path.

Cons: Bed-focused; small starting area; not a tree-specific coverage claim.

Check the current DIG ML50 listing

Buying criteria for tree irrigation

Start with the planting map. Mark each tree, the surrounding shrubs, and the distance to the faucet or reservoir. Group nearby plants only when the same delivery pattern makes sense. A tree pocket with mixed sizes may need point emitters rather than one broad spray.

Choose point-source emitters when you need to place delivery at separate plants. Choose micro-sprayers when a wider planting patch fits one adjustable pattern. The product record does not give a universal rule for how much water a tree needs, so do not turn the kit’s flow figure into an irrigation schedule.

Keep filtration and pressure control in the plan. GE200, G77AS, Rain Bird, and ML50 list pressure or filter parts. GF100 includes a filter but matches an elevated low-pressure source. The source type should decide the kit before the number of trees does.

For the supply hose, the large-garden hose guide covers reach. For beds around young trees, the raised-bed guide gives a tighter comparison.

Frequently asked questions

What is the best drip irrigation system for trees?

DIG GE200 is the strongest general starting point in this record because it has both 1-GPH emitters and adjustable micro-sprayers, plus long supply tubing. G77AS is better for irregular tree and shrub beds where point-source placement matters most.

Are micro-sprayers good for trees?

They can fit a broader tree or shrub bed when the spray pattern matches the planting. DIG SM500 and GE200 are the relevant options here. Spray is more exposed to wind and evaporation than a point emitter.

Can a rain barrel irrigate trees?

DIG GF100 is designed for an elevated rain barrel and includes 50 button drippers. Reservoir height affects the layout, and the locked record does not document an automatic controller.

Should a tree use one drip emitter?

The locked products do not provide a universal emitter count for a tree. Use the manufacturer’s layout guidance and place delivery points for the planting, rather than assuming one point fits every tree.

Recommendation

Choose GE200 for a mixed tree area, G77AS for irregular landscape beds, GF100 for an elevated rain barrel, and SM500 when a broad adjustable spray pattern fits the planting.

Sources and methodology

The locked records cover DIG GE200, G77AS, GF100, SM500, SM50, Rain Bird, and DIG ML50. Bob Vila supplied independent drip-kit context. She Gardens did not test these products. The ranking follows the locked irrigation manifest dated 29 August 2026.