An excellent way to support the cryptocurrency ecosystem of the game and receive multiple kinds of rewards is to participate in the liquidity pool for FLOWER & USDC. This can be a little complicated for people who are unfamiliar with crypto, so let's toss a coin in the Wishing Well and get started!
Think of a liquidity pool as a money changer. If you travel to another country and have cash from your home country, you need to change it to the native currency. The money changer has a certain amount of both currencies on hand, and can trade your foreign money for the domestic money. Then, another traveler is returning home and needs to make an exchange in the opposite direction. Some of your money will end up being given to that traveler instead.
A liquidity pool enables cryptocurrency swaps between two different tokens, and the one we will focus on is USDC/FLOWER. This lets players with cash buy FLOWER and use it in the game, and it lets others who want out of the game to sell their items and get cash. All of that currency has to come from somewhere, so the developers are encouraging people to contribute their money to the pool, and offering rewards in return.
To begin, you will need a cryptocurrency wallet like Metamask. You can use whichever one you prefer, but it must support both the Base blockchain and the Polygon network. If you haven't minted your farm, make sure to do that now, and have your farm's NFT in the wallet you want to use. That is how the rewards will come to you.
You will also need some amount of ETH on the Base to pay for gas fees. You should already have some of this if you are using the Daily Chest.
Go to https://app.uniswap.org/buy and get your USDC from your funding source. Make sure it is on the Base network. Use this link to directly swap USDC for FLOWER, and only swap 50%. The value in USD of both tokens will not be exactly the same, but it is close enough.

Once you have an equal amount of FLOWER and USDC, use this very fancy link to jump straight to the create position screen. A position is your stake in the pool. The options should be auto-filled for you, but if they are not, ensure that the first token is FLOWER, the second is USDC, and that the position is v3, not any other v. Don't worry about the fee tier, 0.3% is the default and is fine.

On the next screen, ignore the rest of the options and go down to the Deposit Tokens section. Use all of the FLOWER you swapped. You will probably have a few USDC cents left over, but that is fine. It's not really possible to get it perfect. Review, sign, and process the remaining transactions to create your position. You are now helping the game in a whole new way!
When all is said and done, you will get a cool NFT in your wallet that signifies your ownership of your position. Each position has a unique URL with Uniswap where you can manage your money. You can Add Liquidity at any time, provided you have a 50/50 split of FLOWER and USDC like you did when you created the position initially.
You can also Remove Liquidity, which gives you your tokens back. You can't specify a precise amount, though, you must enter in a percentage of your total holding to extract it. All of these actions require a blockchain transaction and to pay ETH as a gas fee.
After your position is created, it may take a few days for your in-game rewards to start arriving. You will get an initial gift of a Coin Head wearable hat, which is a little gaudy but still fun. Every day when you log in for the first time, you will get a random Reward Box from any of the four categories, including Flower. The tier is scaled to the amount of your position, though there is no data available as to how much you need to deposit to earn a specific tier of box. But, it is a reliable source of items, provided you maintain your position!
Uniswap itself provides a pool reward, which is a percentage of the fees collected when trading tokens across the pair. You can Collect any fees you've earned from your position's page. It is paid to you in both FLOWER and USDC, which you can then deposit into the game or back into the pool for more rewards.
When you saw the button in the game, it mentioned Merkl rewards, which we haven't discussed yet. But now we will. Merkl is another app that will reward you FLOWER for holding a position, and much more than the Uniswap reward. You can see the campaign dashboard at that link, and after you connect the same wallet that contains your position's NFT, you can claim your additional FLOWER. The dashboard states that the campaign has an end date, but it doesn't mean the rewards will end. The developers have renewed the campaign every time it expires.
Merkl provides a leaderboard of position holders, but if you're trying to rise to the top spot and want to know how much to invest, the leaderboard isn't helpful. It shows the cumulative rewards earned by a particular address, not the amount of its position. If you want to know that, you have to take the address to a tool like Basescan, find the NFT for the position in that wallet, take the position ID back to Uniswap, and find the amount of the position. That's tedious work! If you are committed to being #1, just remember that as of the time of this writing, the top position in the pool is worth $73,000 USDC!
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