Let's back up a little... many Cattleyas grown in homes have one growth period per year, in the spring/summer. Then they sit through the winter doing nothing, though some wait until winter to flower on the growths made the previous spring/summer.
In more southern climates (like mine) where winter days are longer and growing rooms are warm, some of them - not all - will continue to grow all year. But you're far enough north I wouldn't expect Cattleya growth in winter.
|