Can I save a leaf with spots?

It is best to snip off heavily spotted leaves to keep the fungus from spreading. If the spot is tiny, you can monitor it for a few days.

Are these spots contagious to other plants?

Yes, fungal spores and aphids can easily move to your other houseplants. Isolate your Alstroemeria until it looks healthy again.

Peruvian Lily: spots, causes and fixes

Check these first

Inspect the undersides of leaves for tiny insects.
Look for gray fuzzy mold on the foliage.
Check if the soil is staying soggy for too long.

Likely causes

Botrytis blight
Most likely
How to tell: You will see gray, fuzzy mold patches on the leaves or flowers, often accompanied by brown or black spots. This happens when the air is too damp and stagnant.
What to do: Remove all affected leaves and flowers immediately to stop the spread. Improve airflow around the plant by spacing it further from others and avoid overhead watering.
Aphids
Most likely
How to tell: Small, soft bodied insects cluster on new growth and leave behind sticky residue that can lead to dark sooty mold spots. Look closely at the tips of the stems.
What to do: Spray the plant with a gentle stream of water to knock the aphids off. If they persist, apply insecticidal soap once a week until the infestation clears.

Find out what's wrong with your peruvian lily

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

When to worry

If the spots are spreading rapidly across the entire plant, it is time to act quickly to save it. A few small spots on older leaves are usually just part of the natural aging process.

Stopping it coming back

Water at the base of the plant to keep foliage dry and ensure your plant has plenty of space for air to circulate.

Keep your peruvian lily healthy from here

Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.

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Questions people ask

Can I save a leaf with spots?: It is best to snip off heavily spotted leaves to keep the fungus from spreading. If the spot is tiny, you can monitor it for a few days.
Are these spots contagious to other plants?: Yes, fungal spores and aphids can easily move to your other houseplants. Isolate your Alstroemeria until it looks healthy again.

Why does my Alstroemeria have spots on its leaves?