When I bought this Amaryllis last year the bloke in the shop went to great lengths to explain that you need to take the bulb out of the soil over winter, and you get one flower every 2 years.We forgot to do that.What does it all mean?

When I bought this Amaryllis last year the bloke in the shop went to great lengths to explain that you need to take the bulb out of the soil over winter, and you get one flower every 2 years.We forgot to do that.What does it all mean?