Quote:
Originally Posted by LadyV  Many orchids sold here in the UK have their roots tightly wrapped in Sphagnum moss and nothing else. I always remove the Sphagnum and repot using my own orchid compost mixes with just a little added Sphagnum. My husband is a carnivorous plant enthusiast and always uses Sphagnum when potting up his plants, therefore we always have a good quantity of home-grown and dried Sphagnum. He has asked me to remind those of you who are unable to locate Sphagnum, live or dried, that there is a shredded, dried Sphagnum moss from New Zealnd that is sold in compressed blocks called Supersphag. To revive, just add rain water and each block will expand greatly.The compressed, dried blocks are easy to store too. For more information, see: Supersphag
I hope that helps,
V. |
Seedlings do not require drying out before watering, hence many growers use the sphag to keep the seedlings roots moist while growing.
Depending on the type of orchid, for instance, cattleyas, require proper drainage and drying out before watering out when they are approaching mature stage in order to grow and bloom properly. One will then have to pot the plants accordingly.