Are aphids harmful to the milkweed?

They are a nuisance and can cause leaf curling, but they rarely kill the plant. They are also a food source for beneficial insects like ladybugs.

Should I use pesticides for curling leaves?

Avoid harsh chemicals, as they will harm the butterflies and pollinators you are trying to attract. Stick to water sprays or natural insecticidal soaps.

Why are my Showy milkweed leaves curling? Causes and fixes

Check these first

Inspect the undersides of the curled leaves for aphids.
Check if the leaves uncurl in the cool of the evening.
Feel the soil to see if the plant needs a deep drink.

Likely causes

Aphid Infestation
Most likely
How to tell: You see clusters of small yellow or orange insects on the undersides of leaves or near the tips.
What to do: Spray the aphids off with a strong stream of water from a hose. You can also wipe them away with a damp cloth or use insecticidal soap if the infestation is heavy.
Heat Stress
Possible
How to tell: Leaves curl inward during the hottest part of the day but look normal in the morning.
What to do: Ensure the plant is watered deeply to help it handle the heat. A light layer of mulch around the base can help keep the roots cool.

Curling leaves on other plants

Find out what's wrong with your showy milkweed

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

Curling is usually a temporary reaction to stress or pests. If the leaves become brittle or turn brown while curling, the plant is suffering from severe dehydration.

Stopping it coming back

Monitor for aphids early in the season and keep the plant well hydrated during intense summer heat waves.

Showy milkweed: curling leaves? Check yours with a photo

Every plant is a little different. Take a photo of your showy milkweed and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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

Questions people ask

Are aphids harmful to the milkweed?: They are a nuisance and can cause leaf curling, but they rarely kill the plant. They are also a food source for beneficial insects like ladybugs.
Should I use pesticides for curling leaves?: Avoid harsh chemicals, as they will harm the butterflies and pollinators you are trying to attract. Stick to water sprays or natural insecticidal soaps.

Guides to these causes

Aphids

Why are my Showy milkweed leaves curling?

Check these first

Not sure what's wrong with your showy milkweed?