About 3 weeks ago, the leaves on my monstera started drooping. I had backed off on watering it since it wasn't drinking as much. I just assumed this was due to the change in temps and it going out of its growing season. I checked the soil using my water meter as well as sticking my finger a couple of inches down in a few spots and it was very dry. I gave it a good drink until the water was draining from the bottom, but that didn't seem to help.

Well this week, I found one leaf that was yellowing and had black spots. I went over the entire plant to check for pests, but I didn't see any nor did I find any other leaves with similar damage. I did have a plant somewhat near this one that I had to quarantine due to thrips so I was afraid that was the issue. I really didn't see any of the normal signs of thrips, but I went ahead and treated it a couple of times with insecticidal soap. Unfortunately, that hasn't helped, and I'm at a loss as to what to do next.

A little about the plant:
It's in a 16 inch pot, which has 3 drainage holes. It sits on a plant stand and drains into a saucer that sits below the stand so it's never in standing water. Before fall started in late October, I fertilized it once a month with fish emulsion. It drank a lot from spring to summer, so I had to water it at least once a week. Now it's backed off to needing watered once every 7-10 days. I haven't fertilized it since late October.

It was in a 14" pot for a year and I just repotted into this 16" around July.

Any advice is much appreciated!

When you water your Split-Leaf Philodendron (Monstera deliciosa), does the water seem to immediately run right through and out the drainage holes? To my old eyes, the 3rd photo shows what appears to be extremely dry soil. I'd sit the pot in a tub of water for an hour or so and allow it to thoroughly soak the entire soil mass.

plantladylin said: When you water your Split-Leaf Philodendron (Monstera deliciosa), does the water seem to immediately run right through and out the drainage holes? To my old eyes, the 3rd photo shows what appears to be extremely dry soil. I'd sit the pot in a tub of water for an hour or so and allow it to thoroughly soak the entire soil mass.

Yes, the water does run right through. It could be that the soil is too dry since I'm not watering as frequently. I'll try letting it soak in a tub and see if that helps. Thank you!

plantladylin said: When you water your Split-Leaf Philodendron (Monstera deliciosa), does the water seem to immediately run right through and out the drainage holes? To my old eyes, the 3rd photo shows what appears to be extremely dry soil. I'd sit the pot in a tub of water for an hour or so and allow it to thoroughly soak the entire soil mass.

Yep, good advice.
Or small amounts, over and over.

I'd clip that leaf, it's not coming back, but that's just me.

plantladylin said: When you water your Split-Leaf Philodendron (Monstera deliciosa), does the water seem to immediately run right through and out the drainage holes? To my old eyes, the 3rd photo shows what appears to be extremely dry soil. I'd sit the pot in a tub of water for an hour or so and allow it to thoroughly soak the entire soil mass.

Just wanted to say thank you! It took a couple of days, but after soaking the pot in water for 1.5 hours it perked right up. It's looking so much better now! Really appreciate your help!

So glad to hear that your Monstera is doing better!