| Phals are what I am most familiar with. If your phal is in bark--especially largeish bark--it would tend to dry out faster and may well need watering more than once a week. It may be on an entirely different schedule than your other plant in spag. When you water it, give it a good long drink wetting everything completely, but not the leaves, or especially not the points where the leaves join the central plant. If you get water in those little junctures, blot it out with a tissue or it can lead to serious disease.
Don't go by how dry the medium seems on the surface--this would be a good place to use another chopstick if you're not doing so already. Wait until the stick is only slightly moist before you water again.
I guess different watering schedules would be a problem if I were taking care of hundreds of orchids, but as it is, I kind of like having something to do on different days!
Maba |