What causes Heartleaf Philodendron leaves to not separate from their shoots?

I have several small Heartleaf Philodendrons that have been growing for a couple of years.  For the most part, they seem healthy, but oftentimes new leaves have difficulty fully unfolding from the little shoots they grow from.  The stay stuck in the outer protective leaf and don't open up, and either dry out and die or form stunted, misshapen leaves when they finally pull themselves free.  You can see this in the picture I've uploaded, which shows a stunted leaf and a leaf that has not managed to unfold itself from the shoot it grew in.

Does anyone know what might cause this problem?  I admit that I don't water them as regularly as I should, but it's not all the tendrils that do this.

Picture of What causes Heartleaf Philodendron leaves to not separate from their shoots?
sort by: active | newest | oldest

Where are you?

Temperature can cause this.

Light level can cause this.

I see this quit a bit in the winter.

El Mano (author)  Josehf Murchison10 months ago

In the Great Basin desert. We have very low humidity levels, but it's not terribly hot or cold most of the year.

I am assuming you are growing it near a window where it can be a little cooler than the rest of the room when the heating is not running, and hot and dry when the heating is running.

You had about 9 hours sun at the winter solstice; and about 10 hours sun now, with dry air.

Move it away from the window under a grow lamp, and a little misting every day should help reduce the stunting. Or you can just give it a little misting and wait for summer, the stunting should go away by then.

Downunder35m10 months ago

During those times for fresh green coming my grandparents sprayed a fine water mist on the several times a day.
Where they grow wild the humidity is often over 80% during the day, so it might be as simple as the husk drying out and going hard...

El Mano (author)  Downunder35m10 months ago
Okay. I live in the desert, so that might be a cause.
rickharris10 months ago

Generally speaking plants use water to pump up shoots to gain the open air,

1. they may be too dry

2. You may need to help them out a bit by freeing the shoots that get stuck.