Hi Russ, was hoping you’d see this one!! I had been trying to figure out if it was a Philodendron or a Syngonium, too! My first thought was Philodendron, but there is a Syngonium with the same colouring & very similar leaf shape I’ve seen at some local plant boutiques, but none of the plants I’ve seen have been as big & mature as this, so it’s hard to compare leaf shapes definitively with a juvenile plant!

I wouldn’t have thought it was overwatering - when the first few leaves started yellowing I had not watered any indoor plants in a couple of weeks as a couple of my other plants had fungus gnats & I was ensuring they didn’t spread/continue. At that stage I thought it must’ve been suffering from underwatering, so have been watering a fairly small amount every 2-5 days, depending on the weather... (its mostly been 27-34 Celsius here lately). The soil is dense, but quite sandy... this is just the soil the plant came in, so I assumed it was growing well in it. I normally use a succulent mix for my indoor plants so that they dry out quickly & I just water regularly. I normally check most plants soil are dry first 2cm or so before watering..... Still think it’s overwatering?

I’ll post a few more pictures of the plant, vine structure, etc if that helps when I get home!

Ethan, my initial thought on ID was Syngonium macrophyllum, you might Google that name and see if it's a match. Leaves are heart shaped and have a distinctive matte surface... no shine at all.

More later,

Russ

Hi Russ, yes that’s the one they had in the shop!! I took a photo of it & then forgot to compare when I got home! My only thought is that my plant does seem to have some amount of ‘sheen’ to the leaves, while the Macrophyllum in store here seemed to have fuzzy leaves? Could this be a juvenile vs adult leaf thing? I’ll post some pics to explain.... small plant with white lattice is their plant...

Ethan, the plant on the lattice is definitely S. macrophyllum. Given the sheen on your plant I'm thinking it might not be this Syngonium. But if not, I don't have an ID from your last pic

Sounds like the yellowing might be reaction from under watering when you had the gnat problem. How long ago was that, and how long have you been watering regularly. Rule of thumb is when you water, water fully and then wait til top inch or so of mix is dry.

I do think your medium is too dense, if your still having trouble by spring U would repot into something lighter.

Russ

Ok thanks, Russ... judging by the leaf shape, though, I think it’s still a Syngonium of some sort, though, right?

Ok, the gnat problem was about a month ago now, these last 2 leaves probably started yellowing about 2 weeks ago...

We’re heading into Auntumn here now, so I might just change the soil anyway... once I can get my hands on some gnat-free soil! Hahaha (the source of the gnats in the first place was a fresh bag of potting mix, the net 2 bags I bought also had gnats! )

Thanks again for all your help, Russ! You’re a legend!