Calandiva Stem Brown Spots: Environmental, Not Pathogenic

Assessing the Spots

Brown spots on Calandiva (Kalanchoe blossfeldiana) stems—sent photos—appear environmental, not infectious. No insect signs, no spread pattern. Likely minor physical injury, fertilizer salt deposit, or transient stress.

Monitoring Protocol

• Watch for spread/enlargement.
• If stable → cosmetic, ignore.
• If spreading → respond for re-evaluation.

Why Not Disease

Pathogenic spots typically show concentric rings, halos, or sporulation. These lack disease morphology. Calandiva is generally trouble-free.

No treatment needed unless progression occurs.