"NATIVE HABITAT:
Roses come from the borders of the Atacama Desert in southern Peru and northern Chile at least as far south as Santiago. The Atacama can be one of the harshest environments on the planet! There are parts of it that have never had rain in recorded history. The temperatures there may reach 135 F (57 C) or higher in Summer. They may experience light frosts in Winter. We think that the areas where roses are found aren't quite so severe. They've been reported from semi-desert to scrub forest areas. Apparently their principle source of water in nature is from the food they eat and fogs that drift in from the Pacific Ocean once in a while."
This is where this is from and it has a complete care sheet on this tarantula:
http://www.ucalgary.ca/~schultz/roses.html Females they are unsure but a fair guess that's life expectancy is around 20 years males half that. When you buy one in the store that is good size it usually is an adult already.
We feed ours once a week. usually only 1-2 crickets depending on the species and the size of the tarantula. Rose also are known for not eating. One person has reported that their rose did not eat for 2 years. We feed some of our larger tarantulas a superworm as a treat.
A word of caution with feeding live pinkies. Know were they are keeping them and the care they give their pinkies. If they are kept in cedar or pine shavings the oils in the wood is toxic to tarantulas. Also if they have treated anything that they are on or in with any kind of mite spray it can kill your tarantula. Hubby bought 6 pinkies at the reptile swap near our house, thinking it would be a nice treat for our larger tarantulas and within minutes all 4 that had started eating them starting doing what is called a death curl. Out of the 4, 2 died. $2.00 worth of pinkies, $200.00 loss
When the tarantula is getting ready to molt it is because they are growing, usually the abdomen will start to darken and they may not eat. Some may even web up in a hide. If they do this do not disturb them or feed them because this means they are in pre-molt. Just give them water. When they molt they will flip over on their backs and like Mr. U said they look dead. It is cool to watch them molt if you get a chance, but it happens so slowly that you have to keep checking in on them. We wait a week sometimes longer to feed once they molt. Their fangs turn black.
Not all tarantulas have urticating hairs (the rose does). Only new world tarantulas (the Americas) this is how they defend them self. You can even get the hairs in your eyes even after touching a molt and then touching your eyes. They will fling hairs first then bite you if you don't back off. Old world tarantulas are very quick and their bite can be medically significant. Arboreals like the avics will shot their feces at you.
I forgot if they injury a leg, they will grow in back in a couple of molts. They may even bite off an injuried leg. A ruptured abdomen is fatal.