Ficus fig leaf plant - what’s wrong with it?

[superoz]

I was gifted a lovely ficus fig leaf plant for Christmas. The last couple of weeks it’s developed this brown patch on one of the leaves.

Not sure what I’m doing wrong. Google says I could be underwatering or overwatering, but I can’t tell which. I’m watering about once a week but can’t tell how much I’m meant to be using.

These need a huge amount of indirect light in the uk, in the wild they like full sun but protection from the highest rays from the canopy. They like the soil to be free draining and not saturated. I'd say to water when the top 1-2cm is dry but underneath that is still a little moist. I had better success with mine by biting a grow light from Amazon and keeping it totally away from the window with regular 12 hour's offull spectrum light a day. That removes a variables apart from central heating.

Also this might sound confusing but you can't over water any plant. They should be watered by sitting the entire pot into water for 30-60 minutes them left to fully drain. It's not about the amount of watering, it's about the time between waterings. My monstera , I submerge in water every 10 days in winter and every 5 days in summer. My cacti, I submerge in water every 2-3 months for 5 minutes and don't water again until the soil is dry.

@greasypolemonkeyman I think you’re being pedantic about the term overwatering. Watering too frequently would be overwatering too.

I have had similar ponderings and bought a sensor thing. Turns out I’m overwatering rather than under. This is my thingy

https://amzn.to/48BW2oe

I want being pedantic at all. Plenty of People that don't understand how plants work think that pouring a cup of water on once a week is fine but depending on the size of the pot you can end up with critically dry roots at the bottom and moist soil at the top. This was a lesson I learned very early on in my plant journey and I was simply trying to explain to the op that it's better to soak the plant totally and then let it dry out than to add a bit of water every time you think it needs it. This species is known for being difficult and I was simply explaining how mine thrive.

Anyway, back to the query. Just cut that leaf off OP. It certainly doesn't look like either over- or under-watering to me at all. It looks like either disease or a pest, and you don't want it spreading to other leaves.

Thanks @Yamadori . That’s interesting, I wonder where it picked that up from. I’ll cut it off and hopefully it won’t have spread.