Planning reference
Slugs vs Cutworms
Separate slug chewing from cutworm clipping before re-sowing seedlings, changing mulch, drying beds, adding collars, or covering rows.
Problem diagnostic
Slugs vs Cutworms cockpit
Start with slime trails, ragged holes, clean clipping, wet shelter, residue, weeds, and row-cover timing before drying beds, adding collars, or re-sowing.
Ragged slug chewing and soil-line clipping need separate night scouting before re-sowing.- 1 Slug clues Slime trails, ragged night holes, wet mulch, boards, weeds, and cool shelter.
- 2 Cutworm clues Clean clipped stems, missing seedlings, top-inch soil hiding, and C-shaped larvae.
- 3 Night proof Scout after dark or lift shelter before drying beds, adding collars, or re-sowing gaps.
- Night check
- Scoutafter dark, early morning, or under shelter
- Damage style
- Ragged/cutragged leaves versus clean clipped stems
- Shelter cue
- Moistwet mulch, boards, weeds, and residue
What each seedling signal means
- Slugs
- Slugs are soft-bodied night feeders that rasp irregular holes in leaves and seedlings, leave shiny slime trails, and stay active where soil, mulch, boards, weeds, or plant debris keep conditions moist.
- Cutworms
- Cutworms are moth larvae that usually feed at night, hide in soil or residue during the day, and can cut young seedlings at or just below the soil line so plants disappear suddenly.
- Ragged holes and slime trails
- Ragged leaf holes, shredded edges, slime trails, and damage that increases after wet nights point toward slugs or snails before assuming a stem-clipping caterpillar.
- Cut stems and missing seedlings
- Cleanly severed stems, seedlings clipped near the ground, and nearby curled C-shaped larvae point toward cutworms, especially where weeds or residue sheltered larvae before planting.
- Night scouting and hiding places
- Scout after dark and check under boards, mulch, leaves, soil clods, weeds, and plant residue; the hiding place and feeding pattern decide whether to dry habitat, handpick, use collars, or protect rows.
Seedling protection workflow
- Check the injury pattern first
- Do not re-sow every missing seedling before checking the damage pattern; look for slime trails, ragged leaf holes, clean soil-line cuts, C-shaped larvae, wet shelter, weeds, collars, and row-cover timing before changing water, mulch, protection, or pest controls.
- Scout at night or early morning
- Use a flashlight after dark or lift nearby shelters in the morning so the active pest, not only the damaged seedling, drives the response.
- Change habitat before chemicals
- For slugs, reduce wet shelter, weeds, boards, and dense debris around seedlings, then handpick or trap where pressure is visible. For cutworms, remove weeds and residue before planting and inspect soil around clipped plants.
- Protect vulnerable transplants
- Use collars or other physical barriers around high-value transplants when cutworm clipping is likely, and use row covers only when they go on before pests are trapped underneath.
- Keep moisture decisions separate
- Do not dry seedlings to the point of stress just to suppress slugs; use the wet-soil, mulch, and watering checks to balance pest habitat with crop establishment.
Use these paths
- Direct Sow Garden Planner 85 direct-sow-capable varieties where soil-line clipping, ragged holes, moisture, and re-sowing checks matter
- Transplant Garden Planner 50 transplant-capable varieties where collars, row-cover timing, and nighttime scouting can protect starts
- Mulch vs Bare Soil Balance mulch moisture benefits against slug shelter, wet residue, seedbed warming, and young-seedling vulnerability
- Wet Soil vs Workable Soil Separate workable seedbeds from wet shelter before changing watering, mulch, or direct-sow timing
- Row Cover vs Cold Frame Use covers before pest pressure is trapped inside, and match protection to seedlings, ventilation, watering, and pollination needs
- Garden Watering Planner Check root-zone moisture before drying beds for slug suppression or adding water to stressed clipped seedlings
Source basis
- UC IPM cutworms Cutworm larvae hiding in soil by day, night feeding, clipped plants, field scouting, weeds, plant residue, and early-season injury checks
- UC IPM snails and slugs Snail and slug slime trails, irregular holes, moist hiding places, night scouting, habitat reduction, barriers, traps, and baits
- UMD Extension cutworms Seedlings cut off near ground level, nighttime feeding, daytime soil hiding, collars, weed removal, and transplant protection
- UMN Extension cutworms Cutworm seedlings clipped at or below the soil line, C-shaped larvae, night feeding, weed control, collars, and scouting guidance
- UMN Extension slugs Slug slime trails, ragged chewing, night feeding, moisture, shelter, handpicking, traps, and garden sanitation guidance