Why hasn't my tarantula molted in months?

[TheOa]

My year+ spiderling hasn't molted in a few months and I'm really curious if any of you have any ideas why. I live in Utah so the weather is really bipolar, especially during the Spring, and she is a Grammostela Rosea (I don't know the gender but I hope it's female so I call it a she) do you guys got any ideas?

 

[Tarantuland]

Could be a few years depending on size, this is a notoriously slow growing species

 

[jrh3]

This is normal for tarantulas. They can go long times between molts.

 

[DaveM]

In ~25 years from now, if your spider is still alive, she might take > 5 years between molts. This has happened for one of my elderly Grammostola females.
At 1+ years old, the intermolt period will probably be less than a year, but more than a few months.
Console yourself that she is happy in her skin

 

[Smotzer]

Sit back relax and enjoy your tarantula! It shouldn’t be of an concern when it does or does not molt! It will molt when it’s ready, likely not before that.

 

[jc55]

My G Pulchripes took two years in between molts so just be patient and your tarantula will molt when it is ready.

 

[greeneyedelle]

My year+ spiderling hasn't molted in a few months and I'm really curious if any of you have any ideas why

Because it's a tarantula

 

[The Grym Reaper]

Because it's a slow growing species.

Could be worse, my 2 and a half year old A. bicoloratum which is still under an inch just went 10 months between moults.

 

[Jonathan6303]

My 1/4 inch b. auratum has not molted in over three months. These species are very slow growing don’t worry