Once you have the NFT in your wallet, simply opt-in to the staking pool on AlgoStake. Staking will run for 1 full year from Arbor Day 2022 to Arbor Day 2023.
Across the full year you will earn 36,000,000 TREES. This number is static and will not change regardless of the price of the token.
Latecomers can also stake but may not earn the full 36,000,000 TREES. You will receive 98,630 TREES per day.