As a country we voted in a Conservative government with a manifesto commitment to plant 30 million trees a year to help reach net zero emissions by 2050. Based on this and a simple model for capture of carbon by growing trees I got the following results:
- Planting 30 million new trees a year, every year until 2050 will achieve about 9% of the reductions we would require to reach net zero emissions.
- That would be 930 million new trees.
- The same 30 million new trees a year, every year until 2030 would achieve about 1% of the reductions to reach net zero by 2030
 Net zero by 2050 is a time frame that has a low probability of keeping warming below a relatively safe 1.5C
 Net zero by 2030 a time frame that has a high probability of keeping warming below a relatively safe 1.5C