Mass tree-planting campaigns routinely fail to deliver the lasting climate and biodiversity impact they promise

The problem

"We planted X million trees" is one of the most repeated environmental claims of the last decade — by governments, corporations, and cause-linked products alike. The trouble is that the headline number counts seedlings put in the ground, not living forest standing years later. The two can diverge enormously.

The recurring failure modes are well documented:

• Counting planting, not survival. Success is announced on planting day. Nobody returns to measure how many trees are alive after three, five, or ten years — the only number that matters for carbon or habitat.
• Wrong species / wrong site / wrong season. Saplings planted in the dry season, in soil or rainfall that cannot sustain them, or as exotic species ill-suited to the location, die at very high rates. Some schemes plant trees on existing carbon-rich habitat (grassland, peat), destroying a working ecosystem to create a failed one.
• Monocultures sold as "forests." Single-species or exotic plantations grown for a carbon number provide little biodiversity value, are fire- and disease-prone, and are frequently marketed as restoration.
• No aftercare. Establishment — watering, weeding, protection, replacement — is where most plantings live or die, and it is the part that headline events routinely skip.
• Greenwashing and offsetting. The count is used to project an eco-friendly image, often by actors whose core activity drives emissions or clearing, and to mint carbon credits against trees that may never reach maturity.

Why it is hard

The incentives reward the photograph, not the forest. Planting is a discrete, fundable, PR-friendly event; multi-year survival monitoring is slow, unglamorous, and expensive. Verification is genuinely difficult at distance, so disputed survival figures (a union says 90% died; the ministry says 95% live) are common and hard for outsiders to adjudicate. And restoration is not the same as conservation: protecting an intact forest is usually cheaper and more certain than recreating one.

What a credible answer has to address

A serious approach has to (1) report survival over years, not seedlings on day one; (2) match native species to site and season; (3) fund local aftercare and monitoring, not just the planting; (4) avoid destroying existing carbon-rich habitat; and (5) make impact independently verifiable rather than self-reported. The solutions and case studies below show the gap between planting done as a measured, monitored restoration and planting done as a headline.