If I understand you correctly, you have two issues going on. First how to get them to continue to grow through the summer, when the bulb is producing next year's flower buds. Secondly, how to force the bulb to bloom during the holidays. After the bloom, the leaves may droop a bit, but stake the leaves if necessary and keep watering and fertilizing like other houseplants. As soon as frost is done, its probably too hot and dry for them in the house. Try putting the pot outside and keeping it watered and fertilized, in half day sun: Some people plant the bulb in the ground for the summer. For holiday blooms, stop watering in August, let the leaves die back, and force the bulb into an early "winter" dormancy (dark, cool, dry). Bringing it out of dormancy after several weeks, the bulb should bloom earlier than it would if it was outside. Margaret (mcash70 ) is an excellent resource for forcing dormancy. She is very successful at getting the bulbs to rebloom in the winter. Purchased Amaryllis bulbs will shrink after blooming, since they put so much energy and moisture into the flowers. They certainly appear to have wasted away. It can take several years for the bulb to recover and rebuild before it is able to produce another bloom. It takes patience and sometimes luck to get them to rebloom at Xmas in the house.
the potted bulbs which get sun until 2PM.
one of two pots which are in full sun
I especially love the dark red amaryllis in the back of the last picture and the reds in the first picture or two, but they are ALL really pretty.
