Tree planting can be part of a carbon offsetting strategy, but it’s more complex than many companies realise. The vast majority of tree planting projects do not qualify for carbon offsetting. Only specific, certified projects–known as ARR projects (Afforestation, Reforestation, and Revegetation)–can issue carbon credits that may be used for offsetting.
What Tree Planting Actually Does for Carbon
When you plant a tree, it doesn’t immediately remove a meaningful amount of carbon from the atmosphere. Trees absorb CO₂ gradually as they grow, storing carbon in their wood, roots, and surrounding soil. A mature oak might store around 48 pounds of CO₂ per year, but it takes decades to reach that point.
This is why tree planting for carbon offsetting isn’t as straightforward as “plant 100 trees, offset 100 tons of CO₂.” The outcomes depend on tree species, location, survival rates, and how long the trees actually remain in the ground.
For business leaders considering offsets, the timing matters. If you’re offsetting this year’s emissions with trees that won’t mature for 20 years, you’re effectively borrowing against future carbon storage.
Why Most Tree Planting Does Not Qualify for Carbon Offsetting
Traditional tree planting is one of the most recognisable climate actions–but that doesn’t mean every tree planted can be used to offset carbon emissions. Most reforestation efforts today don’t meet the requirements to issue certified carbon credits because they fall short on one or more core offsetting criteria: permanence, measurability, or verification.
Here’s why:
- Carbon sequestration takes time. Trees remove carbon slowly over years or decades, making it difficult to match immediate emissions with immediate removals.
- Lack of rigorous verification. Only projects that go through strict, independent verification can issue carbon credits. Unless a tree planting project is verified by a recognised carbon standard (like the Woodland Carbon Code or Verra’s VCS), it cannot issue credits or be counted toward offsetting.
When Tree Planting Qualifies for Carbon Offsetting
Tree planting can be part of a credible offsetting strategy, but only in specific circumstances. Most importantly, the project must be designed, verified, and monitored as a carbon removal project–these are ARR projects: Afforestation, Reforestation, and Revegetation.
These projects involve planting trees in areas that were previously forested or naturally suitable for forest ecosystems, with the express goal of sequestering carbon over time.
What makes ARR projects potentially offset-eligible:
- They’re measured and monitored to calculate how much carbon is removed over the lifetime of the forest.
- They’re certified under recognised standards like the Verified Carbon Standard (VCS) or Gold Standard, or national schemes like the Woodland Carbon Code in the UK.
- They issue verified carbon removal credits, which can be purchased and retired to offset emissions.
Unlike traditional reforestation, ARR projects follow strict protocols for permanence, additionality, and leakage, and are subject to third-party validation. These safeguards help ensure the tonne of carbon claimed is real, measurable, and additional.
Even then, there’s often a delay: trees must grow for several years before enough carbon is sequestered to issue verified credits. That’s why some standards issue pending issuance units (PIUs) early on, which aren’t eligible for offsetting until verified removal occurs.
In short: yes, you can plant trees to offset emissions—but only if you’re supporting a high-integrity ARR project that meets all the requirements of a certified removal credit.
For Immediate Impact: Carbon Credits That Offset Today’s Emissions
If your goal is to take responsibility for your company’s current carbon footprint and make an immediate, measurable impact, the most practical approach is to invest in certified carbon credits from projects that have a more immediate climate effect.
These projects generate credits by preventing emissions or delivering verified removals in ways that can be accounted for now. They’re verified under rigorous international standards (like Verra or Gold Standard) and provide a credible way to offset emissions today.
Examples of high-impact projects for immediate offsetting include:
- Renewable energy: Supporting wind, solar, or hydro projects that replace fossil-fuel generation.
- Methane capture: Funding technology at landfills or farms that captures and destroys methane (a highly potent greenhouse gas).
- Protecting rainforests (REDD+): Preventing deforestation and avoiding the release of large carbon stores.
- Energy efficiency: Supporting projects such as clean cookstoves that reduce emissions and improve local air quality.
Switch2Zero’s Take on Tree Planting
At Switch2Zero, we see tree planting as one tool in a broader climate strategy – not a silver bullet for carbon offsetting.
For us, tree planting is a way of paying it forward. It’s a long-term investment in the Earth’s health. Mature forests are critical for a stable climate—they support biodiversity, maintain healthy soils, and provide sustainable livelihoods for communities.
We also believe trust matters. That’s why we partner with organisations that use technology to verify every tree planted, supporting transparency and long-term survival.
The Bottom Line: A Two-Part Strategy
Tree planting is an essential and powerful tool in the fight against climate change—but it’s most effective when viewed as a long-term, “pay it forward” restoration activity.
For businesses looking to take accountability for their emissions today, the most effective strategy is to purchase high-quality carbon credits that deliver immediate, verifiable impact.
A robust climate strategy can—and often should—include both:
- Offsets for your current footprint (immediate impact), and
- Verified tree planting to help restore ecosystems for future generations (long-term impact).
We have a full beginners guide to understanding carbon offsets if you're looking for further information. We've also covered the top 5 misconceptions around carbon offsetting which should help answer some of the questions you may have.
If you’re ready to act, we’re here to help. View the carefully selected projects supported by Switch2Zero, or purchase carbon offsets directly through our website and be confident your investment is driving real environmental change.
