Climate ActionHow long to decompose? Posted on April 25, 2022April 25, 2022 by kcleland 25 AprReduce, Reuse, Recycle. Reduce has the highest impact, especially items that take a long time to decompose (return to the earth), or are less recyclable:Learn More about Zonta’s commitment to reducing Climate change. Drawdown Solutions for Climate ChangeVote Equality: Vote Climate. Use scorecards to know who supports what.