Stump Grinding vs. Stump Removal Decision

Why this matters

After tree removal, the stump remains. Customers face a choice: leave it, grind it, or fully remove it. Each option has cost, time, and outcome differences. A tree service should be able to explain the options clearly and recommend the right one for the customer's situation. The wrong choice creates future problems - pests harbor in untreated stumps, lawn replanting struggles around buried wood, drainage issues develop.

The three options

When to leave the stump

Acceptable when:

• Stump is in a wooded area where no use is planned
• Customer accepts the slow decay (10-20 years)
• Aesthetic decisions favor "natural" look
• Budget-constrained customer

Not recommended when:

• Stump is in a lawn area
• Stump may harbor pests (termites, ants)
• Stump is close to structures
• Tree died of disease that may persist in the stump

Stump grinding details

The mechanical grinder:

• Self-propelled machine on tracks or wheels
• Cutting wheel grinds wood into chips
• Operator controls the wheel position
• Cuts typically 4-12 inches below grade
• Removes the visible stump + ground-level roots

Time per stump:

• Small (6-12 inch diameter): 15-30 minutes
• Medium (12-24 inch): 30-90 minutes
• Large (24+ inch): 1-3 hours
• Very large (36+ inch trees): half-day or more

Result:

• Stump and surface roots removed
• Chip pile remaining (decomposes over months)
• Soil mostly disturbed but mostly in place
• Ground roots remain (smaller; will decay)

Stump removal details

Complete extraction:

• Excavator OR backhoe digs around the stump
• Major roots cut as needed
• The entire stump + major root system lifted out
• Large hole remaining

Time per stump:

• Small: 30-60 minutes
• Medium: 1-2 hours
• Large: 2-4+ hours

Result:

• All major wood removed
• Large hole requiring backfill
• Soil completely disturbed
• Roots NOT remaining (in the excavated area)

Cost comparison

The relative costs (no specific dollar amounts):

For most residential situations, grinding is the cost-effective choice. Excavation reserved for specific needs.

When to grind

Grinding is the right choice for:

• Standard residential lawn (replanting grass)
• Light gardening / landscaping in the area
• Aesthetic improvement of the property
• Walkway or patio replacement (smaller scope)

After grinding:

• Chip pile typically removed by the contractor
• Soil can be backfilled or leveled
• Lawn replanted (with potential issues from buried chip)

When to excavate

Excavation is the right choice for:

• Replanting another tree in exactly the same spot
• Building a structure on the location (foundation work)
• Drainage / engineering work requiring clear soil
• Customer wants the area completely free of wood debris

The cost premium of excavation is justified by these specific needs.

After-the-grind issues

Common issues:

1. Buried chips affect lawn replanting: chips below the soil surface continue to decompose; the surface settles
2. Root suckers: some species (sweet gum, locust, ailanthus) sprout vigorously from remaining roots; periodic mowing controls but suckers persist for years
3. Soil compaction: equipment compacts the soil; needs aeration for new lawn
4. Drainage: a low spot may develop where the stump was

Customer should understand:

1. The lawn may struggle for 1-3 years
2. The area should be amended with topsoil + compost
3. Re-grading may be needed
4. Suckers from stump-prone species may emerge

Sucker control

Some species sucker prolifically after removal:

For sucker-prone species:

• Stump treatment with herbicide immediately after cutting
• Follow-up treatments as suckers appear
• Multi-year process

Stump treatment

For sucker-prone trees, treat the stump:

1. Fresh cut surface (within hours of cutting)
2. Apply concentrated herbicide labeled for stump use:

• Glyphosate
• Triclopyr
• Imazapyr

1. Cover the cambium (the outer growth ring just under the bark)
2. The herbicide moves into the root system and kills the tree's ability to resprout

This is the most effective sucker prevention. Requires state pesticide applicator license in most cases.

Customer education

For stump decision:

1. "Your stump can be left, ground, or fully removed; let me explain each"
2. "Most homeowners choose grinding; it's a good balance of cost and result"
3. "Excavation is for specific needs (replanting, building, etc.)"
4. "After grinding, your lawn may need some attention for the first year"

Replanting considerations

If replanting in the same area:

• After grinding: backfill with quality topsoil; replant 6-12 months later
• After excavation: backfill immediately; replant after 30 days for soil settling

Don't replant immediately after either; the soil and remaining wood need time.

Grinding around obstacles

Stumps near obstacles (driveways, fences, sprinkler systems, utility lines):

1. Survey the area before starting
2. Identify utility marks (call 811)
3. Identify sprinkler lines / valve boxes
4. Identify other underground (gas, water, electric)
5. Adjust the grinding plan to avoid damage

Damaging buried lines is a significant liability issue. Survey carefully.

Multi-stump operations

When multiple stumps exist on a property:

• Per-stump pricing standard
• Bulk discount for multiple
• Equipment travel between stumps adds time
• Coordinated scheduling

For acreage properties with many stumps, packaged pricing makes sense.

When to recommend leaving the stump

For customers who can't or don't want to remove:

1. Mark the stump for safety (orange paint, marker)
2. Cut it level or slightly above grade
3. Treat with herbicide if sucker-prone species
4. Schedule monitoring for safety as decay progresses

References

• ANSI Z133 (Safety Requirements)
• ANSI A300 (Tree Care Standards)
• ISA (International Society of Arboriculture) Best Management Practices
• State pesticide applicator licensing for stump herbicide
• Manufacturer documentation (Vermeer, Carlton, Bandit, others)
• Manuall internal: Stump Grinding, Tree Removal Service SOP, Tree Pruning Service SOP