Are aphids harmful to my roses?

They suck the sap, which can stunt growth and distort flower buds. While they rarely kill a mature rose, they can ruin your floral display.

Do I need to use harsh chemicals?

Not usually. A sharp stream of water or organic insecticidal soap is typically enough to manage the problem.

Why are there tiny bugs on my rose buds? Causes and fixes

Check these first

Look closely at the new buds and stem tips.
Check for sticky residue on the leaves below the buds.
See if ants are crawling on the plant, as they often protect aphids.

Likely causes

Aphid Infestation
Most likely
How to tell: You will see clusters of tiny green, pink, or black insects on new growth. They often leave behind a sticky substance called honeydew.
What to do: Spray the aphids off with a strong blast of water from your garden hose. If they persist, apply insecticidal soap or neem oil every 5 to 7 days.
Excessive Nitrogen Fertilizer
Possible
How to tell: The plant has a flush of very soft, succulent growth that attracts aphids. This happens when you overfeed with high nitrogen products.
What to do: Switch to a balanced fertilizer designed for roses. Avoid overfeeding, especially during the peak of summer.

Pests on other plants

Find out what's wrong with your rose

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

Small numbers are usually handled by beneficial insects like ladybugs. You should only worry if the aphids are covering the buds and preventing them from opening.

Stopping it coming back

Encourage ladybugs and lacewings in your garden to keep aphid populations in check naturally.

Rose: pests? Check yours with a photo

Every plant is a little different. Take a photo of your rose 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

Are aphids harmful to my roses?: They suck the sap, which can stunt growth and distort flower buds. While they rarely kill a mature rose, they can ruin your floral display.
Do I need to use harsh chemicals?: Not usually. A sharp stream of water or organic insecticidal soap is typically enough to manage the problem.

Guides to these causes

Aphids

Why are there tiny bugs on my rose buds?