Tree terms: n
- Nagoya protocol
- narrow fork
- nastic movement
- National Association of Tree Officers
- National certificate in arboriculture
- National character area (NCA)
- National Council for the Conservation of Plants and Gardens
- National diploma in arboriculture
- National ecosystem assessment
- National Forest
- National forest land scheme
- National Fruit Collections (NFC)
- National Heritage Act 1983
- National House Building Council
- National Joint Utilities Group (NJUG)
- National nature reserve (NNR)
- National occupational standards
- National park
- National planning policy framework
- National planning practice guidance (NPPG)
- National plant specification
- National Playing Fields Association
- National Proficiency Tests Council
- National qualifications framework
- National tree safety group
- National Trust
- National vegetation classification
- National vocational qualification
- native
- native oaks
- natterjack toad
- Natura 2000
- natural area
- natural capital
- Natural Capital Commitee
- natural colonization
- Natural England
- Natural Environment and Rural Communities Act 2006
- Natural environment white paper
- natural fracture pruning techniques
- natural gas
- natural pruning
- natural regeneration
- natural resources
- naturalized
- nature improvement area
- Nature’s Calendar
- naturenet
- NC Arb
- NCA
- NCCPG
- ND Arb
- near native
- necrosis
- nectar
- neem oil
- negative feedback
- negligence
- neighbourhood development order
- neighbourhood plan
- nematode
- neolithic
- neophyte
- nesting season
- neutron probe
- New Forest
- New Towns Act 1946
- newt fence
- newton
- NFC
- NHBC
- NIA
- niche
- nicking
- night-scented flower
- nimby
- nitrifying bacteria
- nitrogen
- nitrogen fixation
- nitrogen starvation
- nitrous oxide
- NJUG
- NNR
- noble chafer beetle
- node
- no-dig surface
- no-fines aggregate
- Noise at Work Regulations 2005
- noise reduction (by trees)
- noises (made by trees)
- nomenclature
- nominal damages
- non-departmental public body
- non-statutory consultee
- no-parking whitebeam (Watersmeet whitebeam)
- normal age class distribution
- normal risk
- normative
- north Atlantic drift
- NOS
- no-sky line
- notch
- notch planting
- notching
- notho- (n-)
- nothovar
- noxious weeds
- NPPC
- NPPG
- NPS
- NPTC
- NQF
- NTSG
- nuisance (common law)
- nuisance (statutory)
- nurse tree
- nursery
- nursery stock
- nursery stock quality
- nut
- nut trees
- nutrient
- nutrient cycling
- nutrient deficiency
- nutrient toxicity
- NVQ