Rose pests can be frustrating, but most problems are easier to manage once you know what you are looking at. Aphids, thrips, spider mites, scale, caterpillars, rose slugs, beetles, and other pests all leave different signs, so correct identification is the first step.
This guide is designed as a quick starting point. Each section shows the common signs of a particular pest, the kind of damage it causes, and the first things you can do about it. Where a more detailed page is available, you can follow the link for extra information.
Not every pest problem needs a heavy-handed response. Sometimes a strong spray of water, pruning away badly affected growth, improving air movement, or encouraging beneficial insects is enough. The aim is to protect your roses while using the simplest effective solution.
Useful Rose Pest Controls
Not every rose pest problem needs a strong chemical spray. In many cases, the best first step is simple: identify the pest, remove what you can, and use the least aggressive method that works.
A strong spray of water can help dislodge aphids, spider mites, and other small soft-bodied pests. It is often worth trying before reaching for anything stronger.
Mild soapy water or insecticidal soap can also be useful for soft-bodied pests such as aphids, mites, and scale crawlers. Avoid harsh household detergents, as these may damage rose leaves, especially in hot weather.
Neem oil is another useful option for many rose gardeners. It can help with aphids, mites, scale, whitefly, and some chewing pests, but it should be used carefully. Avoid spraying in strong sun, high heat, or when bees are actively visiting open flowers.
For larger pests such as beetles, caterpillars, and leaf rollers, hand removal is often the simplest control. Pruning away badly affected tips, buds, or rolled leaves can also reduce pest numbers quickly.
Encouraging beneficial insects is part of good rose care too. Ladybirds, lacewings, hoverflies, parasitic wasps, spiders, and birds can all help keep pest numbers lower.
Whatever spray or treatment you use, test it on a small part of the plant first. Spray in the cool of the day, follow label directions, and avoid treating roses when they are stressed by heat or drought.
Aphids
Aphids are one of the most common pests you will find on roses. They usually gather in clusters on soft new growth, buds, and young stems, where they suck sap from the plant.
A light infestation is often more unsightly than serious, but large numbers can distort new growth, spoil flower buds, and leave behind sticky honeydew. That sticky coating can then lead to sooty mold.
The good news is that aphids are usually quite manageable. Natural predators such as ladybirds often help, and many gardeners simply wash them off with a firm spray of water. For more detailed advice on identification and control, see the full aphids page.
Beetles
everal types of beetles can cause problems on roses. They may chew holes in leaves, nibble flower buds, or damage petals, leaving blooms looking ragged and spoiled.
The damage is usually easy to spot: irregular holes, notched petals, and chewed leaf edges. Some beetles are only a minor nuisance, while others can cause more noticeable damage if there are a lot of them.
Handpicking is often useful for larger beetles, especially early in the morning when they are slower. For more detail, see the full page about controlling beetles on roses.
Caterpillars
Caterpillars can chew rose leaves, flower buds, and sometimes petals. The damage often shows as ragged holes, missing leaf sections, or leaves that look partly eaten from the edges inward.
Some caterpillars are easy to spot, while others hide under leaves or feed at night. A small amount of damage is usually not serious, but larger numbers can quickly make a rose look untidy.
The simplest control is to inspect the plant and remove them by hand when you find them. Also check folded or webbed leaves, as some caterpillars shelter inside them while feeding. Neem oil is a great natural spray to use.
See our page on beetle control for more information on using Neem Oil.
Leaf Rollers
Leaf rollers are caterpillars that hide inside folded or rolled rose leaves. You may notice leaves that look curled, tied together, or webbed, with chewing damage inside.
The caterpillar shelters inside the rolled leaf while it feeds, which can make the damage look worse than the pest itself. A few affected leaves are usually not serious, but they can make the plant look untidy.
The easiest control is to remove the rolled leaves by hand and dispose of them. Check nearby new growth as well, as more than one caterpillar may be feeding on the same plant.
Rose Midge
Rose midge damage is usually seen on soft new growth and developing flower buds. The tiny larvae feed inside tender shoots and buds, causing them to blacken, shrivel, twist, or die before they open properly.
This pest can be frustrating because the insect itself is not always easy to see. Often the first sign is repeated bud failure, with new tips collapsing or flower buds turning brown for no obvious reason.
Remove and dispose of damaged buds and shoots as soon as you notice them. Keeping the ground below the rose clean may also help, as part of the life cycle takes place in the soil.
Nematodes
Nematodes are microscopic worms that live in the soil and feed on rose roots. Because they are below ground, they are not as easy to spot as aphids, beetles, or caterpillars.
The damage usually shows as weak growth, poor flowering, yellowing leaves, stunting, or a rose that seems to struggle even when it is being watered and fed properly. In some cases, the roots may develop knots, swellings, or damaged areas.
Nematodes are difficult to deal with once established, so prevention is important. Healthy soil, good drainage, crop rotation where possible, and avoiding planting roses into badly affected ground can all help reduce problems.
Rose Slug (sawfly lavae)
Rose slugs are not true slugs, but the larvae of sawflies. They feed on rose leaves and can make the foliage look pale, papery, skeletonized, or full of small holes.
The damage often starts on the underside of the leaves, so it can be easy to miss at first. By the time the top of the leaf looks badly marked, the larvae may already have done quite a bit of feeding.
Check the undersides of affected leaves and remove the larvae by hand if you find them. A strong spray of water can help dislodge them, and badly damaged leaves can be removed to tidy the plant.
Scale Insects on Roses
Rose Scale: Rose scale often appears as a crusty white or gray shell on rose stems and branches. Heavy infestations can make the bark look flaky and can weaken the plant, causing poor, spindly growth.
Cottony Cushion Scale: Cottony cushion scale is usually found on twigs and branches. It can produce sticky honeydew, which may lead to sooty mold on leaves and stems.
California Red Scale: California red scale is very small and can be orange to orange-pink in color. Serious infestations may cause yellowing leaves, leaf drop, twig dieback, and general weakening of the rose.
Scale problems are often easiest to manage early. Prune out badly infested stems where practical, or treat affected areas with horticultural oil, white oil, or another suitable scale treatment.
Spider Mites
Spider mites are tiny sap-sucking pests that are often hard to see without looking closely. They usually live on the undersides of leaves and are more common in hot, dry conditions.
The first signs are often fine speckling, dull leaves, yellowing, and sometimes very fine webbing around leaves and stems. Bad infestations can make the plant look dry, dusty, and stressed.
A strong spray of water can help dislodge mites and raise humidity around the plant. Also remove badly affected leaves and avoid letting roses become too dry and stressed during hot weather.
Thrips
Thrips are very small, slender insects that often hide inside rose buds and flowers. They can be difficult to see, but the damage they leave behind is usually more obvious.
Affected blooms may open poorly, look streaked or bruised, or have browned petal edges. Pale-colored roses often show the damage most clearly, with flowers looking dirty, marked, or distorted.
Remove badly damaged blooms and dispose of them. Keeping old flowers cleaned up can help reduce pest numbers, and more detailed control may be needed if thrips become a regular problem.
Rose Pests and Diseases
