Plant Problem Lab
Alocasia profile

Plant + symptom guide

Alocasia brown spots

Brown spots need texture and location checks. Dry window-facing spots, soft spreading lesions, and pest speckling point to different next steps.

For alocasia, adjust the diagnosis around this plant profile: Alocasias cycle leaves, but rapid yellowing, droop, or spots often comes from watering swings, low light, cold, or spider mites.

Most likely causes

pest pressuredirect sun, heat, or light shockoverwatering or slow-drying soildirect sun or heat scorchwet-soil root stresspests

How to confirm it

Check whether spots are dry and tan, soft and spreading, or tiny and speckled.

Notice whether damage is strongest on the window-facing side.

Inspect undersides and new growth for residue, dots, or webbing.

Inspect the undersides of leaves for spider mites early.

Check whether one old leaf is cycling or several leaves are declining together.

Next steps for Alocasia

  1. Step 1

    Move out of harsh direct sun if damage lines up with the window.

  2. Step 2

    Isolate the plant if pest signs appear.

  3. Step 3

    Avoid cutting every spotted leaf until the cause is stable.

Recommended reading

Read next for this pattern

Brown Spots vs Brown Tips illustration
Brown Tips & Leaf Damage6 min read

Brown Spots vs Brown Tips

Brown tips are usually repeated stress at the leaf edge. Brown spots can point to scorch, pests, root problems, edema, or physical damage.

Read the guide
Fiddle Leaf Fig Brown Spots illustration
Plant-Specific Guides6 min read

Fiddle Leaf Fig Brown Spots

Brown spots on a fiddle leaf fig can come from root stress, dry patches, sun scorch, edema, pests, or physical damage. Location and texture help narrow it down.

Read the guide