Case study of
#00114 Fund native-species restoration through vetted local partners, and report multi-year survival — not seedlings planted
King's Lynn, Norfolk, United Kingdom
#00126
Implementer
Local council tree-planting scheme, King's Lynn (Norfolk, UK)
Location
Description
An open space on the edge of King's Lynn, Norfolk, was planted with around 6,000 trees in plastic tree guards, intended to create a carbon sink. Reporting found that almost all trees died. Three compounding errors were identified: (1) saplings were planted in April rather than winter/early spring, giving them little chance to establish before summer stress; (2) they were planted very shallowly, with some roots growing upward inside the plastic guards rather than into the soil; (3) the site was species-rich grassland that was already a carbon-negative habitat supporting wildflowers such as knapweed. The net result was conversion of a functioning carbon sink into a carbon source, while the tree-planting goal also failed entirely.
Metrics
2Funding
Lessons learned
- Planting on existing carbon-rich or species-rich habitat can produce a net-negative outcome: destroying carbon-negative grassland for trees that then died turned a sink into a source — worse than doing nothing.
- Season of planting proved decisive: April planting gave saplings insufficient time to establish before summer stress; winter or early-spring planting is required for reliable establishment.
- Planting depth is a critical technique: shallow planting prevented rooting, with some roots curling upward inside plastic guards — a site survey of planting technique should be a prerequisite for funding disbursement.
- Reporting 'trees planted' (6,000) communicated nothing about outcome; near-total mortality and ecosystem loss were invisible until investigative reporting surfaced them.
- A pre-planting habitat survey would have identified the grassland as a protected-value site to avoid rather than convert — site selection must start from existing ecological value, not available open space.
Sources
1Documented Jun 29, 2026