@humble cape
Root farming is basically making use of the fertile soil blocks and planting bountiful seeds on it.
All you need to get started:
- Fertile soil blocks (they are farmable so you can just buy the blocks which go for 120-150/wl)
- Your choice of bountiful farmables
Currently there are 2 popular farmables people use for root farming.
- Bountiful lattice fence (Rarity: 47)
- Bountiful Growtopian-eating looming plant (Rarity:68)
A full farm of bountiful lattice fence is able to yield about 200-250k gems every week, compared to looming which gives you 350k every 2 weeks.
The basic idea is similar to farming but you don't get gems when you break the blocks and will only get gems when you harvest a level 3 root.
Everytime you plant the seeds, it will form roots. In order for one to collect gems, you will need to punch and break til the tree says "Level 3".
Afterwards, just gently punch the soil block once for your gems and root cuttings.
Root cuttings are these seeds that will appear when your harvest a root (punching a mature soil block) They usually sell for 200-400/wl.