Amaryllis belladonna as indoor plant

Hi, I have had Amaryllis belladonna for 2 years. However it has not flowered yet. Since I live in hardiness zone 3 I keep it indoors, facing South. It sprouts leaves in August, looses them in the Spring but there is no flowers in between. What should I do to make it flower.

Thank you in advance for you help,
Di

Doug says it sounds as if you have a lack of feeding or lack of light issue. Getting the right amount of energy into the bulb will make the difference between blooming and not. Follow the regular Amaryllis regime for getting it to bloom.