Den seedling turning brown - Orchid Board

Chococatte · #1 07-12-2008, 04:59 PM

I gotten some Den antennatum seedlings, they were already shipped out of flask, I did everything that was recommended too me. Only thing though I didn't have clam shell food tray kind you get from Walmart hot food bar, so I put the Den seedings in a Ziplock food container with some moist sphag moss (not soppy too wet). Keep the lid close for a week, start opening the lid for gradually for a hour or so that the 'chids could get some air circulation. I was checking on them today and some of the 'chid leaves have turned brown.

What do I do now I don't want to loose all my baby 'chids to rot? **Note: I have them on the table outside (look @ my gallery for ref) where my other adult orchids grow.

isurus79 · #2 07-12-2008, 05:55 PM

Though Ive never taken plants out of flask, Ive dealt with lots of seedlings (those are the only ones I can afford!!). I would let them start putting out new growth before you introduce them to the world without spag n bag protection. They need to adjust to your conditions for a while first. Also, make sure that NO direct sunlight is hitting them in the bag. You might be cooking them instead of growing them if theyre exposed to direct sun!

Chococatte · #3 07-12-2008, 07:38 PM

Quote:

Originally Posted by isurus79

Though Ive never taken plants out of flask, Ive dealt with lots of seedlings (those are the only ones I can afford!!). I would let them start putting out new growth before you introduce them to the world without spag n bag protection. They need to adjust to your conditions for a while first. Also, make sure that NO direct sunlight is hitting them in the bag. You might be cooking them instead of growing them if theyre exposed to direct sun!

The ziplock container is square food container, the kind use for Monday night leftovers. I had taken off the lid because condensation was building in container. No direct sunlight shines on the covered porch were my seedlings are kept.

for responding though. I'm keeping my

that no more will turn brown and get them pass this phase. I'll keep you in mind, also going route of buying more seedlings (inexpensive) and soon be giving flasking a go ahead to build up my collection.

isurus79 · #4 07-13-2008, 12:34 AM

Condensation inside the bag is good!! That means that there is a ton of moisture in the air, just the kind of environment that seedlings thrive in. Just make sure that they are not sitting in a puddle.

Chubidubi · #5 07-13-2008, 09:34 PM

Chococatte I have no idea on how to care for them but I wish you the best of luck

erly · #6 07-14-2008, 12:46 AM

Hi Chococatte..
I have same problem with you. Mine is dendrobium tangerinum. It send attached to a piece of bark. My garden looks to warm for the baby so i put some water in bowl under. But it seem doesn't work well because the leaves turn yellow. Now i repott into plastik pot with many holes attached and hang it at shady place with good air circulation. Hope it will be good there.

Becky15349 · #7 07-14-2008, 01:27 AM

It sounds like you have a case of rot, which can be helped (sort-of) by increasing the air circulation. Those plants that you already see brown spots on are going to be weaker and will probably not perform as well - I would separate any good healthy green seedings into a separate container from the brown ones and increase air circulation immediately. They do need moisture, but pehaps since your conditions are not sterile, you are also growing bacteria, which is very dangerous with seedlings. Good luck!

Chococatte · #8 07-14-2008, 06:46 PM

Quote:

Originally Posted by Becky15349

It sounds like you have a case of rot, which can be helped (sort-of) by increasing the air circulation. Those plants that you already see brown spots on are going to be weaker and will probably not perform as well - I would separate any good healthy green seedings into a separate container from the brown ones and increase air circulation immediately. They do need moisture, but pehaps since your conditions are not sterile, you are also growing bacteria, which is very dangerous with seedlings. Good luck!

I'm seeing white fungusly material growing in the sphragnum moss, I've repotted them in more sphragnum moss and spray them down with Physan 20 to try to kill the fungus. The majority of the bigger seedlings were effect with brown and yellowing leaves.

Quote:

Originally Posted by erly

Hi Chococatte..
I have same problem with you. Mine is dendrobium tangerinum. It send attached to a piece of bark. My garden looks to warm for the baby so i put some water in bowl under. But it seem doesn't work well because the leaves turn yellow. Now i repott into plastik pot with many holes attached and hang it at shady place with good air circulation. Hope it will be good there.

I've got them on shaded porch. I will plug in a standing fan to circulate air over the tops of the seedings to see how that will effect them.

Quote:

Originally Posted by Chubidubi

Chococatte I have no idea on how to care for them but I wish you the best of luck

I'm keeping my

too.

Quote:

Originally Posted by isurus79

Condensation inside the bag is good!! That means that there is a ton of moisture in the air, just the kind of environment that seedlings thrive in. Just make sure that they are not sitting in a puddle.

They're sitting in sphragnum moss, the condensation is what I think contributed too some of bigger seedlings leaves browning and yellowing. So I've moved them out of the square ziplock container to separate 3'' compots.

Thanks all for your help.

Cruetsonly · #9 07-16-2008, 04:54 PM

If they are truly 'bigger seedlings', do you think they are big enough to possibly be going through a routine yearly leave-loss? Some dends are deciduous and they lose their leaves. Then they bloom on that cane the next year. Read up on your variety. Maybe the yellowing, browning leaves are a sign of maturity, not rot. Just a though....

Chococatte · #10 07-17-2008, 12:33 AM

Quote:

Originally Posted by Cruetsonly

If they are truly 'bigger seedlings', do you think they are big enough to possibly be going through a routine yearly leave-loss? Some dends are deciduous and they lose their leaves. Then they bloom on that cane the next year. Read up on your variety. Maybe the yellowing, browning leaves are a sign of maturity, not rot. Just a though....

No these are seedlings that have come out of flask, when I was explaining "bigger seedlings", the seedlings are not all of uniform size, some seedlings are small, bigger seedlings are under 3" in leaf span.