Brown Stem with Purple Spots on Phalaenopsis: Scale Infestation

Valentine's Phalaenopsis (twin spikes) finished blooming. One spike has brown with purple spots. Leaves fine, other spike okay. Recently repotted, one root visible at mix surface. Sentimental value—don't want to lose it.

Purple/Brown Spots = Likely Scale Insects

Phalaenopsis attract scale. Spots resemble tiny turtle shells. Check leaf undersides too.

Treatment

1. Cut off affected spike.
2. Wipe leaves with alcohol-soaked paper towel.
3. Repot in FRESH mix (old mix harbors scale). Clean pot thoroughly.
4. Systemic insecticide for lingering crawlers.

If Not Scale, Reply for Other Causes

But scale is the top suspect for this symptom on Phalaenopsis.