Scientific Name: Grammostola rosea – Previously known as both Grammostola spatulatus and Grammostola cala, and the debate still drags on whether these are both the same species, but just different color morphs. Time will tell as science moves forward on Tarantulas in general.
Common Name: Chilean Rose Hair
Geographic Range: Chile, Argentina, Bolivia
Habitat/Species type: Terrestrial / New World
- Terrestrial refers to ground dweller, burrower.
- Arboreal refers to tree dwellers.
- New World species found in the Americas tend to be more docile, less venemous, kick urticating hairs for defense.
- Old World species found throughout the rest of the world, like Asia, Africa, Europe, etc… generally more aggressive, stronger venom, more apt to bite.
Temperature: 70*F-85*F Humidity: Low-Moderate
Growth Size: 5″-6″ legspan Experience Level: Beginner
Temperament: Docile, urticating hairs
Tarantulas vary from docile to very aggressive, skittish, nervous, urticating hair flicker. Read “WARNING” at the end of this care sheet!
Food: Crickets and roaches are most common in captivity. You can also offer mealworms, superworms, etc… DO NOT USE wild caught insects due to insecticides/pesticides and parasites threat.
Water: It is IMPORTANT to always keep an open water dish, full of water in your tarantulas enclosure at all times. This keeps them hydrated and helps keep humidity up! For slings, keep substrate moist. For juveniles and adults, water dish should be non-toxic, shallow and no wider than the body length of your tarantula. NEVER USE cotton balls or sponges to supply water or moisture, may promote mold and harmful bacteria that could be harmful to your tarantula and/or it’s enclosure.
Substrate: Peat moss, coco fiber or a mixer of peat moss, vermiculite.
Provide 4″-12″ of substrate packed down for burrowers. Tarantulas that require low-moderate humidity should be kept on a dry substrate.
Enclosure/Cage: Up to a 10 gal. tank.
Rule of thumb for enclosures is about 1½-2 times the width and length of your tarantula for terrestrial. For arboreal, they need more height then ground space, 1″-2″ of substrate. Provide long pieces of cork bard, branches, etc. to climb on for arboreal. You may provide a hide for a quick retreat if it is startled or feels threatened..
Longevity: Males once mature (2 Years) Females (up to 15 years).

Grammostola rosea
Description:
Grammostola rosea varies from light to dark brown/grey with pink hairs and a brown carapace that appears to be a pinkish/mauve color in the right light. Grammostola rosea lives in shallow burrows/scrapes in the wild’s of it’s native Chile. Grammostola rosea are considered average size tarantula, getting up to a 6″ legspan. Grammostola rosea are very slow growers, taking up to 7 years to become an adult. Adults will molt about once every 1-2 years. Grammostola rosea are also known to go on long fasts, not eating for months at a time. This tarantula is considered one of the slower species.
Keeping in captivity as pets:
For adults you can use medium to large Kritter Keepers, 5 gal tanks, etc… for juveniles, up to 10 gal. tank for adults. This species prefers the dry side, so moderate humidity levels will work and temps between 70*F-85*F work. Substrate can be peat moss, coco fiber or a mixer of peat moss, vermiculite mixture and should be at least 2″-4″ deep to provide adequate burrowing for slings and juveniles. Young Grammostola rosea may burrow, but once they become adults (5-7 years), they tend to just sit around on the surface. I refer to these as “Pet Rocks”. Grammostola rosea are considered the ideal starter Tarantula, due there forgiving nature and easy temperament. Grammostola rosea are generally considered a docile species, certainly handling is possible, but not considered, due to their urticating hairs.
WARNING: Tarantulas are unpredictable and can change there disposition at anytime and may bite. So handling is never advised unless you’re experienced. Old World species tend to be more venomous (stronger venom) than New World species who have urticating hairs. Take all precautions, do some research on the species you plan to own, etc…before handling these wonderful creatures.
DISCLAIMER: Information contained herin represents various resources and my own personal experience with this particular species. Comments on/about/experience are all welcome. There are still allot unknown about certain species, so if you feel this article needs correcting/clarification, please comment below and I will make adjustments where necessary. Spam, hate, offensive, etc… will be ignored/deleted. Thanks for reading, Greg Hagedorn.