What is wrong with pseudobulbs?

[ALJ]

I have three cattleyas that are showing deformed new growth, right at the time when a leaf is beginning to grow from the pb. However the orchids are just fine. Here's some culture info: I grow indoors, water every weekend, fertilize "weekly, weakly" with a flush once a month. The humidity has ranged from 35-50 F this winter. I use 4 T5 lights (6500K each).

Thanks for your help!

[King_of_orchid_growing:)]

Your humidity shouldn't be measured in Farenheit. It's a percentage.

Which bears the question, what is the temperature range they're grown in?

The pseudobulbs are wrinkled and the new growths are warped because of insufficient watering.

Water twice a week, or 3 to 4 times a week, depending on how your plant reacts.

[PaphMadMan]

Your plants are very dehydrated. Either not enough water, or way too much water and the roots have rotted off.

[WhiteRabbit]

as for frequency of watering - it's relative to your climate and potting media, even pot type. Right now I have some catts in clay pots (6"), chc mix, and they are staying moist a long time. Watering only every-other week. Conversely a smaller eplc, clay pot (3"), bark mix, is dry every few days. Skewers in the pots helps determine when to water.

[ALJ]

Thanks for your responses. I'm a bit frustrated since I haven't had this problem before. I've been pretty consistent with watering using the skewer method since I started growing (it's been three years now), so I thought I had figured it out. With regard to the temperature, my orchid corner has on occasion been close to 90 degrees F in warmer weather. I use a fan to counteract this.

Overall, the roots appear to be okay, no rotting. One of the cattleyas lost it's roots a while back and struggles to regain them. That's why it is dehydrated. How can I help it along?

My schedule is pretty hectic so I don't know if I could water them twice a week every week. Would misting a couple times during the week be just as good as an additional watering?

By the way I accidentally typed the symbol for Fahrenheit. I am aware that humidity is a percentage. Thanks for the correction.

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[johnblagg]

Originally Posted by King_of_orchid_growing:)

Your humidity shouldn't be measured in Farenheit. It's a percentage.

Which bears the question, what is the temperature range they're grown in?

The pseudobulbs are wrinkled and the new growths are warped because of insufficient watering.

Water twice a week, or 3 to 4 times a week, depending on how your plant reacts.

Right on the money King