Common Garden Pests
It is almost inevitable that garden pests will
attack your flowers at some point during the season
Many insects, bugs and other animals will probably love your roses as much as you do. That does not mean that every creepy-crawly that visits your plants is harmful. The best control is vigilance and quick action once you have spotted destructive insects.
I know it is annoying when you want to enjoy your flowers
and finally discover greenfly or spider mites trying to suck out the life of
The first thought might be to kill them instantly with
some pesticides, but foremost it is better to
Guide through Pests on Roses
On this page
You should also read...
- Cane Borers
- Gall Wasp
- Rose stem girdler
- Leaf cutter bees
- Rose slugs
- Spider mites
- Rose midges
- Japanese Beetles
To Avoid Common Garden Pests
Some rose varieties are more susceptible to problems than others, but well-fed roses that are growing strongly usually shake off the effects of any attack more readily.
Buying good quality roses will prevent the introduction of pests and diseases into your garden.
Few more practices which help avoid harmful
some Beneficial Bug Wildflowers to encourage beneficial insects such
as the larvae of ladybugs or lacewings to your garden
plants like garlic,
thyme, rosemary, coriander, fennel, mint or petunias and geranium near your
roses will bother several insects
a barrier, a windbreak or plant the roses along a wall or fence. Some pests
don’t like barriers and will stay away from the plants
a problem at an early stage, inspect plants regularly and remove unwanted
insects manually or with a jet of water
larger insects like caterpillars by hand
smaller insects like aphids with a sharp jet of water (don’t forget the
underside of the leaves)
Insect Pests And Where They Colonize
The most common garden pests, what part of the plant they infest and how they look like.
Pests on the Stem
(Greenfly): Those sap-sucking tiny insects are the most common rose pests and
come in many colors like green, black and red.
They damage young shoots and
flower buds. Aphids are easy to control.
More about aphid pests
Borers: When cane growth begins to slow, then
wilt and die, it is almost certain that a cane borer is at work.
Read how to deal with cane borers.
Wasp: Mossy green or brown rose galls are created on roses when
this insect stings a stem.
There are several different types of galls but most
of them are harmless and do no damage.
Stem Girdler: The
beetle larvae bore into rose stems of mostly rosa hugonis (Golden
Rose of China) and some other species.
They cause the stem to swell and
sometimes break. Usually, they do not infest modern roses.
Scale: Scales form a gray or light-brown crust preferable
on old stems. Those are the skeletons of the scale.
Simply cut off the stem
where that ugly crust sits. If scales are a persistent problem, spray it with
lime sulfur or Malathion.
Pests on the Leaf
Caterpillars: Irregular-shaped holes in leaves are the trademarks of
the larvae of moths or butterflies.
Although some butterflies may be charming,
their larvae on roses are annoying.
how to deal with caterpillars.
Leaf Cutter Bees: Unmistakable signs are regular-shaped holes at the sides
of leaves. The bee uses the material for its nest.
Because they never ingest
the leaves, it does not make sense to spray.
Leafhoppers: Pale mottled patches occur
on the upper side of leaves and small, very fast-moving yellowish insects (or
their white skin) can be found on the underside.
They may be repelled by
alliums and eaten by assassin bugs. After a severe attack, leaves may fall, and
you have to spray the foliage with Sprayday
Rose Slug: These slug-like worms scrape off the outer tissue of the leaves, leaving skeletonized
areas. The veins are not eaten; the leaves turn brown and may fall off.
Pick the slugworms off and dispose of them. If you have a bad attack, spray the
leaves with insecticides.
Spider Mites: Very tiny arachnids that barely can be seen. They are on the undersides of
the leaves and suck the plant's fluids. The leaves turn yellowish and may show small silvery spots.
A daily sharp jet of water in the morning will help to
keep the infestation down.
If the pests are a problem, use a dormant
oil spray before roses go to hibernation. This will kill the eggs of the
Rose Midges: These garden pest doesn't get
along well with alliums and strong-scented herbs. Prune off pest-ridden foliage
and flowers as soon as possible.
Pests on Flowers
Japanese Beetles: Beetles like Chafer beetles, June beetles and Cucumber
beetles can be a serious problem in some areas. They eat the flowers as well as
the leaves, often skeletonize them.
Picking them off
can help if they are not too numerous, but if you have serious problems with
that bugs, you have to do something.
How to deal with Japanese Beetles