Orchid related questions, answered by AOS experts.

Note the specific times below if you wish to watch or listen to those topics.

4:15  water pH discussion for orchids 
10:20  Potting mix discussion for Phals and Catts 
14:58  Potting mix discussion for Paphiopedilum 
21:01  potting mix contaminants (possible Osmocote shells) 
22:34  causes for bud blast 
28:20  recommendations for labeling systems
 32:02  troubleshooting cracked leaves 
34:48  blisters on unopened flower buds 
37:08  evaluating possible stem rot---potential causes 
40:19  dark sheath on Laelia pseudobulb 
43:06  cleaning hard water spots off orchid leaves 
46:20  Zygopetalumae subtribe intergeneric hybrids 
50:02  possible treatments using Hydrogen Peroxide as well as aspirin 
51:50  rotating plants growing on a windowsill 
53:48  why watering with warm water doesn't help Vandas 
55:02  fertilizer discussion for growing better roots