Cactus wrens are found in deserts as well as egrets which are common in parts of the Chihuahuan Desert.
cactus wren
It most likely won't grow outdoors in Missouri. It may grow indoors. A saguaro cactus [Carnegiea gigantea] isn't native to Missouri. It prefers a desert environment of high heat and light, and low moisture and vegetative competition. In terms of the outdoors, a saguaro cactus most likely won't like the eastern part of the state, which tends to have humid growing seasons. It may be able to tolerate the western part of Missouri, which tends to fit in with the drier, hotter growing seasons of the Great Plains. But no matter the part of the state, a saguaro cactus most likely won't like Missouri winters, which tend to bring the cold, damp weather that desert cactus plants detest.
yes
They Most Likely have their wings cut.
the Bayer herbicide is a good solution for most of the plant rashes therefore it is likely to work for the cactus rash too.
A desert.
Neither, its a desert...
A cactus or succulent would likely be best.
Conserve water
Plants in the desert can sustain water and do not need as much of it. Plants in wet climates require much more water than desert plants.
A place where it is likely to be cold and dry is the desert. A desert can have a climate that is either hot, cold or mild with hardly no precipitation.
Desert.