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Sub Soiler

Sub Soiler 3 point tractor attachment for deep tillage hardpan breakup and soil compaction relief
One Year Warranty
One-Year Factory WarrantyFactory coverage for manufacturing defects during normal use within the first year.

$820.00

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The Sub Soiler is a 3 point tractor attachment built for deep tillage, hardpan breakup, soil compaction relief, and drainage improvement. It is the right tool when the problem is below the surface and you need to fracture compacted soil so air, water, and roots can move more freely.

Use a sub soiler before planting, field prep, food plot work, or drainage correction when compacted ground is limiting root growth, water movement, or soil structure. Its single-shank design is made for deep ripping rather than row-making, finish grading, or drilling post holes.

Compare the Sub Soiler with the Middlebuster Potato Plow and Speeco Post Hole Digger.

Sub Soiler Specs

Feature Sub Soiler
Attachment Type 3 point tractor sub soiler / hardpan breaker
Primary Job Deep tillage, compaction relief, drainage improvement, and root-zone preparation
Hitch Fit 3 point tractor attachment; category tags include Category 1
Shank 3/4″ x 6″ x 24″ shank
Protection Shear bolt protection
Point Heavy 2 1/2″ x 12″ x 10/16″ steel point
Ground Action Single-shank ripping action for breaking compacted soil below the surface
Best Fit Hardpan breakup, poor drainage correction, seedbed preparation, soil health, and root growth improvement
Not Built For Round post holes, wide garden rows, finish grading, or loose-material leveling
Category: 3 Point Attachments ,
Tags:
Common uses

What Can This Sub Soiler Be Used For?

Alleviating Soil Compaction

Break compacted layers below the surface so water, air, and roots can move through the soil more effectively.

Hardpan Breakup

Use the single-shank ripping action to fracture hardpan layers that limit drainage, root penetration, and crop performance.

Improving Drainage

Open channels through compacted soil to help reduce standing water and improve water movement through the profile.

Enhancing Root Growth

Loosen compacted ground so roots can reach deeper moisture and nutrients with less restriction.

Preparing Seedbeds

Use subsoiling as a prep step before planting when deep compaction needs to be corrected below the seedbed.

Managing Soil Moisture

Improve the soil’s ability to absorb and hold moisture by relieving dense layers that block infiltration.

Reducing Soil Erosion Risk

Help maintain better soil structure by improving water movement and reducing runoff pressure on compacted ground.

Questions & answers

Sub Soiler FAQs

What is a sub soiler used for?
A sub soiler is used for deep tillage, breaking compacted soil, improving drainage, loosening hardpan, and creating better root-zone conditions below the surface.
Is a sub soiler the same as a middlebuster?
No. A sub soiler is built for deep ripping and compaction relief. A middlebuster is better for opening rows, digging potatoes, and cutting shallow trenches.
Can a sub soiler improve drainage?
Yes. By fracturing compacted soil layers, a sub soiler can help water move through the soil more effectively and reduce drainage problems caused by compaction.
Will a sub soiler help with root growth?
Yes. Loosening compacted soil can help roots grow deeper and reach water and nutrients more easily.
Is this for digging post holes?
No. A sub soiler is not a post hole digger. For clean round holes for fences, gates, planting, and posts, use a 3 point post hole digger.
What are the main specs on this Sub Soiler?
The product page lists a 3/4 inch x 6 inch x 24 inch shank, shear bolt protection, and a heavy 2 1/2 inch x 12 inch x 10/16 inch steel point.

Compare 3 Point Digging and Ground-Breaking Tools

Use this comparison to choose between the Catawba Middlebuster Potato Plow, the Sub Soiler, and the Speeco Heavy Duty Post Hole Digger. These 3 point tools all work in the ground, but they solve different jobs: the middlebuster opens rows and shallow trenches, the sub soiler breaks deep compaction and improves drainage, and the post hole digger makes consistent holes for posts, planting, and farm projects.

Product / ModelMain JobBest ForPrice RangeTractor FitChoose This IfPreview
Catawba Middlebuster Potato Plow Catawba Middlebuster Potato Plow Be the first to review Opening rows and shallow trenchesPotato digging, garden rows, irrigation trenches, shallow field prep, and root vegetable work$515Category 1 3 point hitch; quick attach compatibleChoose this when you need to open furrows, dig potatoes, make planting rows, or cut shallow trenches behind a tractor.
Sub Soiler Sub Soiler Be the first to review Breaking deep soil compactionDeep tillage, hardpan breakup, drainage improvement, root growth, seedbed prep, and soil health$7453 point tractor attachment; category tags include Category 1Choose this when the problem is compacted soil, poor drainage, hardpan, weak root penetration, or deeper soil structure issues.
Speeco Post Hole Digger Heavy Duty Speeco Post Hole Digger Heavy Duty Be the first to review Drilling consistent post holesFence posts, gates, decks, signposts, trees, shrubs, mailboxes, farm projects, barns, and post-frame work$1,254–$1,6353 point hitch post hole digger with auger size optionsChoose this when you need clean, repeatable round holes for posts, planting, fencing, signs, or farm and ranch projects.
Need help choosing the right 3 point digging tool?

Not sure whether you need a middlebuster, sub soiler, or post hole digger? Call Catawba Attachments at (704) 585-2024 and we can help match the tool to your tractor, soil, and project.

Call Catawba Attachments

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