Do American hophornbeams flower?

Yes, they produce small, inconspicuous catkins in the spring. They do not need special care to bloom, as they are native trees that flower naturally in their environment.

Should I prune the curled leaves?

Wait until the tree recovers before pruning. If the leaves are still green, they are likely still helping the tree produce energy.

American hophornbeam: curling leaves, causes and fixes

Check these first

Look at the undersides of the curled leaves for tiny insects.
Check the soil to see if it has dried out completely.
Observe if the curling happens only during the hottest part of the day.

Likely causes

Heat and drought stress
Most likely
How to tell: The leaves curl inward or look crispy at the edges during hot, dry spells. This is the tree's way of reducing water loss through its leaves.
What to do: Apply a 2 to 3 inch layer of mulch around the base to keep the roots cool and moist. Give the tree a deep, slow watering to ensure the moisture penetrates deep into the root zone.
Aphid infestation
Possible
How to tell: You see small, soft bodied insects on the undersides of the leaves or notice a sticky residue called honeydew. The leaves may appear distorted or curled as the insects feed.
What to do: Spray the leaves with a strong stream of water to knock the aphids off. If the infestation is heavy, apply insecticidal soap once a week until the pests are gone.

Curling leaves on other plants

Find out what's wrong with your american hophornbeam

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

It is normal for leaves to curl slightly during extreme heat to protect the tree. Be concerned if the curling is accompanied by yellowing or if the leaves do not flatten out at night.

Stopping it coming back

Keep the tree well mulched and provide consistent deep watering during the first few years of growth.

American hophornbeam: curling leaves? Check yours with a photo

Every plant is a little different. Take a photo of your american hophornbeam 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.

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Questions people ask

Do American hophornbeams flower?: Yes, they produce small, inconspicuous catkins in the spring. They do not need special care to bloom, as they are native trees that flower naturally in their environment.
Should I prune the curled leaves?: Wait until the tree recovers before pruning. If the leaves are still green, they are likely still helping the tree produce energy.

Guides to these causes

Aphids

Why are my American hophornbeam leaves curling?