Lots of sun, plenty of water and fertilizer. There is no need to
withhold water or fertilizer for additional blooming.
They like being potbound so don't use a pot that gives more than two inches of space around the bulb. Personally like to use the pots called "Tall Toms" for these. They are much deeper than wide.
Mine bloom more than a few times a year as houseplants this way.

I'm in Florida-and have about 40-each propagates itself by division-each has pups.Then actually Mom divides (me)..You could do the same-use good soil-give it room to have some babies-and next year-you may have a few! Of course I'm not in the North any more- so they just "keep on keeping on!' and take care of themselves.It is my personal favorite anyway....

I'm in South Carolina and last fall I put all of mine in the ground,and this year they all bloomed (7 or 8 plants) I covered them up with mulch and leaves this past winter and they all have survived. If you want to see them here is the link.

http://www.imagestation.com/
Log - In- Lorkim
Password - The Zoo
You can see my garden & come of my crafts.

Hope this helps you.
Lorraine

I have had one in a flower bed, West exposure, up against a foundation. It has been out there for 2 winters with mulch cover...blooming like mad right now. Looks like it has pups, too. I know that we could get a really hard winter and probably loose it, but it does so much better there and if it will live and bloom for 2 to 3 years for me, I will be happy to replace it with a different color next time.

Hi, I am in zone 5. My Mother just gave me 3 amarillys that bloomed last Christmas. It looks like green growth is starting again. Can I plant these in my garden for the summer and the dig up in the fall? Will they bloom in the summer? I am assuming if I can plant them they should go in full sun. Thanks for any help.

That's exactly what I did for my amaryllis plants last year, put them in the sun, plant directly in the soil. Bring them in the fall. Let them dry for at least a month or so, then start them back up. I actually "regifted" my amaryllis back to my mom and father in law, and now have them back again this year to "regift" this year. They all bloomed again.
Also, I pollenated one I kept and it formed seeds and now have a million red amaryllis seedlings.