How long do Tolumnia flowers last?

[Paul Mc]

Since I'm new to Tolumnia and I realize that things might move quickly with them if they do not get enough nutrients/water, I would like to know generally how long I should expect the blooms to last.

My first tolumnia which I bought back in mid to late February did not have any blooms open when I purchased it. Within a few days they opened. Now the flowers look as though they are spent and wilting. We recently experienced an extreme cold snap (snow for 2 days) after the temperatures had been in the 60's to 70's for several weeks. I'm wondering if it could be temperature related or if it's just their time to go.

Luckily, it appears that another branch of flowers is getting ready to shoot off from the flowering spike! However, it hasn't done much of anything since I first noticed it about 2 or 3 weeks ago.