Maintenance for the week of January 6:
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· [COMPLETE] EU megaservers for maintenance – January 8, 9:00 UTC (4:00AM EST) - 13:00 UTC (8:00AM EST)
It's more of an alchemy crafting mechanic really.
Some plants are poisenous, which means you can only make certain combinations of plants that create something useful.
That is until you master alchemy and can get rid of the negative traits which gives you a lot more flexibility in which plants you combine.
It's a nice thing really, it makes being an alchemy master useful.