Learn how to choose the perfect auger diameter for your landscaping or gardening project with the auger bit size chart below. Then, find out how to power your planting auger properly for the best possible performance.

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Get the Right Auger Diameter

2“ Diameter
  • Flower Planting Auger & Grass Plug Tool (2" x 7")

    $19.99

  • Tree Auger & Planting Tool (2" x 24"- 54")

    $72.50

Great For:

  • Planting annuals, grass plugs, and bare root saplings
  • Installing beach umbrellas and beach volleyball nets
  • Drilling holes to install termite bait stations
  • Installing a sand fence or a snow fence
  • Horizontal boring (ex: under sidewalks)
  • Installing soil moisture probes
  • Anchors or stakes for trees
  • Installing real estate signs
  • Deep root fertilization
  • Tree aeration
  • And more!
3“ Diameter

Great For:

  • Planting 3-inch potted plants, bare root trees, bulbs, vegetables, and shrubs
  • Horizontal boring (ex: under sidewalks)
  • Installing a sand fence or a snow fence
  • Cleaning clogged PVC drainage pipes
  • Digging holes for small game traps
  • Mixing small batches of cement
  • Tilling small planter boxes
  • Installing real estate signs
  • Fence post hole digging
  • Mixing paint and mortar
  • Mixing polymers in soil
  • Mixing fertilizer
  • Mixing seeds
  • And more!
4“ & 5“ Diameter

Great For:

  • Planting 3-inch potted plants, bare root trees, large bulbs, and shrubs
  • Planting quart pot-sized annuals or perennials
  • Boring under sidewalks (horizontally)
  • Cleaning clogged PVC drainage pipes
  • Post hole digging for fence posts
  • Installing real estate signs
  • And more!
7“ Diameter

Great For:

  • Planting multiple bulbs into a single hole
  • Planting 1-gallon potted plants
  • Installing real estate signs
  • Fence post installation
  • 4×4 post hole digging
  • And more!
8“-9“ Diameter

Great For:

  • Planting 1-gallon and 2-gallon potted plants
  • Getting extra space around the root base of 1- or 2-gallon plants
  • 6×6 post hole digging (9″ diameter recommended)
  • Installing real estate signs
  • Fence post installation
  • And more!

Compare Auger Sizes

Some augers are taller than they seem. Use this chart to help compare sizes.

Earth Auger Size Comparison Chart
Earth Auger Size Comparison Chart

Options for Your Auger

Please see the FAQs section for more information about the different options available for our planting augers and check out other auger applications here: auger applications.

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