Dying orchids - Page 2 - Orchid Board

fishmom · #11 12-02-2016, 04:50 PM

For what it's worth, I have used Dyna-Grow for years without problems. It is a reliable product and I've never had a batch that seemed to differ from any other. This makes me wonder if you may have a water quality problem as well as the fungul issue going. Too many salts in the water will result in "burn" just like too much fertilizer. I doubt the fertilizer itself is the issue.

Jancor · #12 12-02-2016, 04:56 PM

Quote:

Originally Posted by fishmom

For what it's worth, I have used Dyna-Grow for years without problems. It is a reliable product and I've never had a batch that seemed to differ from any other. This makes me wonder if you may have a water quality problem as well as the fungul issue going. Too many salts in the water will result in "burn" just like too much fertilizer. I doubt the fertilizer itself is the issue.

I use RO water... Thanks for opinion about Dyna Grow - I was going to through it away

May be I put wrong amount of fertilizer... Need to make a new bunch

fishmom · #13 12-02-2016, 05:26 PM

Ray, a member here, has a website that explains in detail how to calculate the amount of fertilizer that will benefit your plants. Here is a link:
Simplified Fertilizer Dosing Guide - First Rays LLC

There is a wealth of good, practical information on his website. I believe he is currently moving, so not accepting orders for orchid supplies, but he sells good products too.

Tetra73 · #14 12-02-2016, 05:42 PM

Yeah, is fungus and bacterial rots. They are caused by remaining water on the leaves. Some orchids are more resistant to it then others. Makes sure your water is clean not breeding bacterial in it. I have my orchids growing in a enclosed tent. I avoid wetting the leaves during watering and misting. I have one Cattleya I won't mind wetting the leaves because it is very close to my 140mm computer case fan. It takes about few hours to dry. With my dendrobium, I won't let any water touching the leaves because I lost a handful of the leaves from rots because, somehow, water got the leaves...at least when I had the plant 2 months ago and didn't know better.

Jancor · #15 12-02-2016, 05:43 PM

Quote:

Originally Posted by fishmom

Ray, a member here, has a website that explains in detail how to calculate the amount of fertilizer that will benefit your plants. Here is a link:

Thanks! Went to study it

estación seca · #16 12-03-2016, 02:36 AM

I think all your pots are at least twice too big. They stay wet waaaay too long.

King_of_orchid_growing:) · #17 12-04-2016, 05:57 PM

Always check your orchids' roots first!

See what kind of shape they are in.

The first step is the most important one. If you do not check your orchids' roots you will be guessing at what the problem is all day long for as long as the orchid stays alive.

An orchid's roots are very vital to the plant. There is video evidence that the roots of a plant behave like a worm searching out food.

Please watch this documentary and it will show you a time lapse video of how a plant's root behaves. A plant's roots seems to show animal-like behavior. If you don't have time to watch it, you may fast forward to approximately 36 minutes into the video and it will talk about how a plant's roots are considered by botanists to be its brain, and in this latter portion of the documentary, there is a time lapse video of a plant's roots moving like a worm. Here is the link:

https://youtu.be/Q-4w5xYLwiU

Second see how the potting media looks. Your potting media looks old.

Third get rid of dead roots only.

Fourth adjust your pot size to the size of the actual root mass.

Tindomul · #18 12-06-2016, 12:29 PM

Quote:

Originally Posted by estación seca

I think all your pots are at least twice too big. They stay wet waaaay too long.

I have to agree with this. You have a humid environment so whatever media you have will stay wetter longer. I dislike potted plants in terrariums because of this.

Jancor · #19 12-06-2016, 01:09 PM

Quote:

Originally Posted by estación seca

I think all your pots are at least twice too big. They stay wet waaaay too long.

Nope

I repotted all plants in April - pot are only big enough to put all roots. At least, they were in April

---------- Post added at 10:09 AM ---------- Previous post was at 10:06 AM ----------

Thanks to all for advises! I opened the terrarium, added a fan and stop misting (manual watering only). I can't repot plants now - it's too early for them, will do it in April.