How often does a rose hair tarantula eat?

They molt frequently when they are young, their first molts, or "instars", can occur once every 2-4 weeks. But after the spider is sexually mature, that is, you can tell what sex it is, they generally molt once every 1-2 years. I bought a 4 year old female about 1 year ago and she still hasn't molted. Don't worry if your tarantula is a bit behind, every spider is different.

~Abby