Rhapis humilis - leaves refuse to open

[LivistonaFan]

I bought this Rhapis humilis in December 2018 and tried since to acclimate it to partial sun (from April to October, in winter it's indoors), which is why it may look a little rough. The biggest stem is slowly starting to push more compact fronds which is great, but one sucker hasn't opened its spears for about a year.  What could cause this?

December 2018:

now:

Edited July 19, 2021 by LivistonaFan

[lzorrito]

On 7/19/2021 at 11:21 AM, LivistonaFan said:

I bought this Rhapis humilis in December 2018 and tried since to acclimate it to partial sun (from April to October, in winter it's indoors), which is why it may look a little rough. The biggest stem is slowly starting to push more compact fronds which is great, but one sucker hasn't opened its spears for about a year.  What could cause this?

December 2018:

now:

I wouldn't worry. Sometimes it also happens to my Rhapis. Got one sucker that frezed for more than a year, and now, suddenly, it started to grow considerably. Be patient and let yours take its course.