Aerial roots are normal. I ignore them.

tj

It is common for philodendrons to produce aerial roots. It's how they grow in the wild, epiphytic or hemiepiphytic. For phillies grown as houseplants, you can remove them - or not - as you wish. But no need to plant any deeper.

Thanks @tsugajunkie z5 SE WI ♱ @gardengal48 (PNW Z8/9) I will leave them.

if our plant is so happy i putting out MULTIPLE new healthy leaves ..

why would you screw that all up and repot it???

lets try not to harm it with too much love ... lets not create problems ...

ken

Why would anyone do something as silly as repotting a healthy tree? I dunno - why use fertilizer on a healthy tree or change the oil in our cars. To keep things running smoothly and prevent future problems perhaps?

Root congestion is an insidious pilferer of plant potential in terms of growth rate, vitality (health), the plant's ability to defend itself, and eye appeal. At about the time a plant can be lifted from its pot with the root/soil mass intact, root congestion is already taking a toll. Potting up only partially relieves the stress caused by being rootbound, but a full repot with bare-rooting, root pruning and a change of soil fixes it entirely.

Forever - as others note, the (adventitious) root nubs you see needn't be covered. They will soon contact the soil and take root there. Where the plant naturally occurs, and when these adventitious roots find their way into the soil, it is a big advantage for the plant because it increases the area over which the plant can find water and nutrients. In a container, the advantage of having the roots make it into the soil is very limited, practically speaking there is virtually no advantage other than they might help serve to keep the plant propped up. That means, if you don't like their appearance (they can start growing anywhere on the plant and won't always be as tidy as the ones in the image) you can snip them off flush to the point where they attach without harm. You can allow whether or not you like how they look (where they appear in the future) to determine whether they stay/go.

Have you been fertilizing? It's an important part of any containerized plant's care.

Al

Thanks Ken and Al for the great information. My first instinct was not to repot, but I was a little worried the root would dry out. Now I know they are aerial root like orchids, I will leave them.

I have fertilized once with slow release fertilizer a month ago.

Slow release or controlled release? Slow release is the granular product commonly spread on lawns or used in gardens. Controlled release is usually little round balls called prills. Osmocote and Dynamite are examples of controlled release products. Temperature is usually what primarily drives the release rate. What does it say (on the bag) the NPK %s are? NPK %s represent the % of nitrogen, phosphorous, and potassium, by weight. Not all fertilizers are well-suited for use in containers. Your philodendron would really like Foliage-Pro 9-3-6.

It is very easy on plants, gives the grower complete control over the plant's nutritional requirements, and is a complete supplementation program from a single container. It makes an excellent 'go to' product for houseplants and almost anything else you're likely to grow in a container.

Best luck in all your growing endeavors.

Al

Al，thanks again! I use this fertilizer

I will look up Foliage-Pro 9-3-6 as you suggest for next fertilizer.

Again thanks so much and happy gardening!

Al, That is true. I think I will stop applying Osmocote coming fall and use foliage or other soluable fertilizer diluted instead. Thanks!