Quote:
Originally Posted by Gin
I have flasks of Phal. stobartiana X equestris that are germinating . Is replating a matter of crowding , gas exchange in non vented flasks , or the growing medium , size? . At what point are they replated ? I have read back thru all the good info. on here, read several diffrent things that don't agree with each other . Thanks Gin
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It's a very interesting topic: when we should replate your seedlings. I think we need to discuss more about it. IMO we use our common sense to determine when we will replate our seedlings.
1. crowding & size: If there not enough space for seedlings to grow then we need to replate so plants got more space as well as nutrient. There is no doubt about it.
2. Venting: Some experts said that there's no need for young seedling less than 6 months. Few said that special species need venting jar. I try both venting and no-venting with Phal and Den and see not much differences. However, I prefer venting jars: no different pressure inside or outside of the jar; easy and less contaminate when transfer from one jar to another (when you open jar it sucks contaminate air in); it's better to get venting when seedlings are big.
3. Growing medium. Many experts prefer sowing seeds in sowing medium (normally less sugar and salt/fertilizer) then transfer protocorms to a maintenant medium (more sugar,salt/fertilizer, hormone) to get more roots and grow faster. Remember that seedlings release some toxic material such as phenolic in medium so replate seedlings every 3 months if you can. I prefer sowing and replating seeds in the same media for reasons: I don't have expensive & luxury LFH so transferring plants from one jar to another jar could be a nightmare for me if it get contamination. I will transfer seedlings when they have at least 2 leaves and few roots. If they got contamination I can sterile them and sow them in moss. Otherwise if protocorms get fungi it's better to throw them away. So it depends on the what you have, the way you want to sow your seeds and how you choose your media.
What are your opinion?. Welcome to discuss.
