Installing PVC Fence Within Existing Hedge: Pruning Guidelines

Installing 5-foot PVC fence at property line with 15-foot hedge behind. Want fence set into hedge so foliage drapes over. Advised to cut hedge back to trunks up to 5 feet. Will this kill hedge? Lower branches support upper growth.

Hedge Response to Severe Pruning

Most hedge species tolerate hard pruning if done correctly:

• Timing: Late fall/winter dormancy (after leaf drop)
• Technique: Clean cuts just above nodes/buds
• Recovery: 1-2 years for aesthetic recovery
• Species matters: Yew, privet, holly, laurel respond well; conifers (except yew) do not

Assessing Your Specific Hedge

1. Identify the species – Critical for predicting response
2. Map the structure – Which low branches feed upper canopy?
3. Test prune – Cut one section first, observe spring response

Alternative Fence Placement Strategies

Option A: Fence in Front of Hedge (Recommended)

• Install fence 12-18 inches on your side of property line
• Hedge remains intact as backdrop
• Creates maintenance access space
• Fence visible but softened by hedge

Option B: Selective Limbing Up

• Remove only branches directly conflicting with fence posts
• Preserve main scaffold branches
• Train remaining growth over fence top

Option C: Hedge Replacement

• If hedge is declining/wrong species, remove in sections
• Replace with fence-friendly species (espalier, narrow evergreens)
• Phase over 2-3 years

If Proceeding with Hard Pruning

• Hire certified arborist for first major reduction
• Fertilize with balanced slow-release in early spring
• Water deeply during dry spells first growing season
• Mulch root zone (keep off trunks)
• Expect sparse appearance until midsummer

Bottom line: Don't cut structural branches supporting the canopy. Either place fence in front of hedge, or consult an arborist for species-specific renovation pruning. The "cut to trunks" approach risks permanent disfigurement or death.