You'll get a recipe after that, and the crafted items sells for 250 G each.
Tea saplings are not as profitable now. To mass craft, you will need quite a lot of wood and fiber, which isn't that plentiful early on. With temporary planting it can be ok-ish but since it's not 500g anymore, I would say there are better alternatives.
How can I earn money quickly?
You need to scale up your operations. You can fish the whole day to get 5000-8000 gold, but you are locked in fishing for the whole day. You can plant 50 crops and water them manually but it will consume time and give little profit.
There is a significant difference between how power/speed-runners would play the game vs normal players, so keep that in mind.
In spring Y1, options are limited, and most of the income will be from
fishing. The goal is to get to farming level 6 and to farm mines hard to get a lot of iron/gold/quartz bars for summer. If you push it, you can get 40-50 of each, which gives 40-50
quality sprinklers for summer. If someone is playing more slowly, then just move the sprinklers for fall and take it easy on farming during summer. With so many quality sprinklers, you can plant 320+ crops like blueberry/cranberry and sell them raw Y1. No watering, minimal manual work. Later, you would want to increase profits by mass-crafting processing machines. Hundreds of kegs won't craft quickly, so initially, you can use
seed makers to turn some crops into seeds and sell seeds (which can be equal to
dehydrators but quicker and with fewer machines). Then, when you have desired
kegs, you switch to high-value crops that process into
wine.
There are alternatives to crops. The most obvious are
animals. Even coops with chickens are more profitable than spamming raw crops under quality sprinklers (assuming making mayo, which doesn't require that many machines). Barn animals, like sheep or pigs, are at the top of profits - but building barns, getting animals will take time and resources - scaling up. Another alternatives are
mushroom logs. Those are super low effort and quite high profitability, but they require a dedicated plan to scale up - you have to plant a grid of pine trees on your farm, start farming mahogany trees on your farm, collect a lot of green moss during green rain, and so on. Then every 4 days you collect a lot of mushrooms, dehydrate or sell some raw, and done. Very low maintenance - but takes time to start scaling beyond the first 30+ made after green rain in Y1.
Fish ponds are another option, mostly for legendary fish, but those are limited, so you can't scale up directly. There is a quest that gives duplicates of legendary fish, and if you abuse that, then you can have the most profitable farm there is (assuming you build enough fish ponds). It's a very late-game strategy. In the early game, you can have a few ponds for the initial legendary fish. You can put normal fish in fish ponds, but only some are really profitable and require item delivery to unlock higher populations. Selling
gems and bars is also an option, but mostly late/mid-game - people farm dangerous mines level 1 for radioactive ore and sell bars, or mass skull cavern runs to mass sell iridium bars.
Crystalariums duplicating diamonds are also a thing - a very lazy way of making a lot of gold.
Super rare and hard to pull off is breeding monochromatic
slimes of the correct RGB values that, when killed, always drop a diamond ;)