Leaf damage on Phal Memoria Audrey Meldman 'Mendenhall'

Mysterious leaf damage on Phal Memoria Audrey Meldman 'Mendenhall'

     I was out of town this week, and when I came back, I immediately noticed the leaf damage on my Phal M.A.M.  It looks like sunburn to me, but I find it odd that the leaf would burn up so suddenly after being fine for almost two months.  Perhaps the added summer heat was the trigger.

Close-up of leaf damage

     Regardless of the cause, I cut the yellowing leaf off.  Since it was by far the largest leaf on the phal, the remaining plant looks substantially diminished.  Still, there newest leaf is still growing, and hopefully will reach the size of its predecessor.

A suddenly diminished phalaenopsis

     I moved the phal down to the lower shelf, where it is now certain to not be overexposed.

     

Cattlianthe Jewel Box 'Scheherazade' done flowering

Cattlianthe Jewel Box 'Scheherazade' after blooming

     Today, the last of my Ctt Jewel Box flowers was wilted, completing a blooming cycle that lasted just under 5 weeks. There is another sheath, but it is undeveloped, and I have no way of guessing when (or if) those flowers will open.

Leaf damage on cattlianthe

     There is some damage on several of the leaves.  I can't quite tell if the cause is bugs, or sun or cat.  Nonetheless, I moved the orchid back from the windowsill and onto my top shelf under the lights.  In its place, I have both of my oncidiums at the window instead.