Why do the leaves of my Calathea undulata plant dry out? Is it getting too much sunlight? Please give me some advice because I don't give it much water.
i think your plant is lacking in moisture. it can be the main problem cz calathea grows well in high-humidity.
It's also worth noting that pests and fungi, lighting, lack of or even excess water, and high humidity can also play a role in this.
Oh, I think just once a week would be great!