well of course each plant can be alittle different but here is one that explains how the seeds develop.

The flowers of Philodendron bipinnatifidum warm up to around 36°C (96°F) when they are ready for pollination. In Brazil, their country of origin, these plants are pollinated at night by a moth. The seeds then develop over several months in bubbly capsules, with about thirty seeds per capsule. In Australia tree philodendrons don't have any insect pollinators, so they don't set seed unless pollinated by hand.

there is also a society that is specific to philodendrens called International Aroid Society and they have a website. I don't want to put the name in the post because it always causes it to automatically link and I don't want to break any rules of the garden helper. but if you put that title on your search bar I'm sure it will come up.

I love working with seeds although sometimes I'm not very successful.

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There are over 200 different types of Philodendrons according to what I read while researching for this topic. Some of them at least appear to be able to produce seeds. But from what I read getting them to do it so you get viable seeds is labor intensive. Evidently it is much easier to just take a cutting.

If you look up the webside for the society mentioned above I think you will find all of the information you are looking for.

Good luck on your research.

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