Can I eat basil with spots?

It is best to avoid eating leaves with downy mildew or heavy aphid infestations. If there is only one small spot, you can snip it off and use the rest of the leaf.

Do I need to throw away the whole plant?

Not necessarily, but if the downy mildew is severe, it is better to remove the plant to protect your other herbs. Always wash your hands after touching infected plants.

What are these spots on my basil leaves? Causes and fixes

Check these first

Flip the leaves over to check for fuzzy growth or insects.
Check if the spots are spreading rapidly to other leaves.
Ensure the plant has enough space for air to move between stems.

Likely causes

Downy Mildew
Most likely
How to tell: You will see yellowing patches on the top of leaves and gray fuzzy growth on the undersides. This is a common fungal infection for basil.
What to do: Remove and discard the infected leaves immediately to stop the spread. Improve air circulation around your plants by spacing them further apart.
Aphids
Most likely
How to tell: These tiny insects cluster on new growth and leave behind sticky residue or small yellow spots. Look closely at the stems and leaf undersides for small green or black bugs.
What to do: Spray the plant with a gentle stream of water to knock the aphids off. You can also apply insecticidal soap according to the label instructions.

Find out what's wrong with your basil

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 cover more than half of the foliage, the plant may be too far gone to save. Small, isolated spots are normal on older leaves as they age.

Stopping it coming back

Water at the base of the plant to keep leaves dry and ensure the basil gets at least 6 to 8 hours of direct sun.

Keep your basil 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.

Get the app · Or check it from a photo now, free

Questions people ask

Can I eat basil with spots?: It is best to avoid eating leaves with downy mildew or heavy aphid infestations. If there is only one small spot, you can snip it off and use the rest of the leaf.
Do I need to throw away the whole plant?: Not necessarily, but if the downy mildew is severe, it is better to remove the plant to protect your other herbs. Always wash your hands after touching infected plants.

What are these spots on my basil leaves?