Weird “bulbs” That Are Rock Hard Growing Out Of Philodendron Stems?

Question

I have a split leaf philodendron that I believe to be very healthy, but I noticed today that there are weird solid rock hard bulb type things growing out the back of the stems? Are these dangerous to the plant or healthy? I have attached a photo. One is white and one is brown.

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Answer 1

Those are roots! Here are some articles that will help:

https://www.gardeningknowhow.com/houseplants/hpgen/aerial-root-information.htm

https://www.gardeningknowhow.com/garden-how-to/info/trimming-air-roots-plants.htm

https://www.gardeningknowhow.com/houseplants/philodendron/caring-for-philodendrons.htm