When a catasetum starts growing, it thrives on plenty of moisture and
frequent fertilizing. Sphagnum is a good moisture retentive medium, so
is fine bark and peat moss. Arrange the plant so the new roots can
reach the medium, give it good light, water and fertilizer and let it
do its thing. When the leaves on the new growth drop, let the medium
dry out. It's a good idea to keep the bulbs bareroot while they are
dormant.

Catasetums can produce male or female flowers, depending on how much
light they get. They usually flower in the late summer and early fall.

www.carterandholmes.com has a very good Catasetum culture page.

Hope this helps.

J. Del Col