Hi there,
 Would you please send a picture of your plant? There are many different Aloes, and this may be one not familiar to me.   Other questions: How long have you had the plant? Did it lose the lower leaves or were they removed? When lower leaves are removed from the bottom it will not replace them at the bottom but will add on to the top and that might explain the stalk.  Has it  produced any "pups" or offshoot Aloe plants in the pot with it?   I am working on this to best answer your questions. Thanks!  

These are answers to your questions from the plant owner:
I think I have had that plant for 5 years maybe.. the lower leaves dried up so I removed them.. there are no other pups growing.. no offshoots... just that one stalk.

Aloe photos

Thank you for the pictures and answers.  After I sent the questions I did a lot more searching and this is what to try.  First cut the stem under the viable part of the plant back to healthy growth; I would say leave about 2 inches below the last leaf and check to see that it is healthy plant material. The cutting needs to have a base that is sealed so when you make cuts be sure to not cut the leaves or arms of the aloe but slice into the parent plant (stalk) material.  This cutting must sit before planting. It's very important that you don't try to place it in soil too soon. The cutting must have a completely sealed base for the root structure to establish its self. This gives you time to gather your materials for repotting.  A good root starter to dip the aloe arm into just before you place it in the starter pot would be helpful to have along with starter soil if you can find it or a pot of fairly dry compost or cactus potting soil.  In a day or three put the sealed cutting in the pot  and leave it to grow new roots, you may need to prop it up. In a few weeks it should develop roots. 

 I recommend removing the left over stalk and roots carefully from the pot they are in.  Check the roots for good health.  A healthy root is firm and light colored.  Mushy or black roots should be removed.  Repot the bottom part in cactus potting soil, water lightly, and see if it will produce little plantlings around the base.  

Aloe are succulents and generally need very little water. I water mine every two or three  weeks.  They like a well drained soil and do not like to sit in water, so after watering the plants toss out any remaining water under the pot.  They prefer a shallower rather than deeper pot because the root structure fans outward rather than downward. 

Perhaps, one way or the other you will have an aloe plant or plants. Good luck! 

 

 

Thank you so much for your help and your complete and explanatory answer!!

You are most welcome, I learn too.  I am glad I could help.  Sue