Where does aphid on roses come from? Types of pests and methods of control
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Since ancient times, the rose is considered the queen of flowers. But like all other plants, this flower is subject to invasion by pests.
The article will discuss what types of pests are and what they can do to the plant.
Detailed information will also be given on how to deal with aphids on roses. Including folk, mechanical and biological methods.
Pest species
It happens of different types, but all of them are united by high fecundity and activity. On the plant, these bugs can be seen with the naked eye.
- White house aphid affects roses growing at home. Translucent, small, not more than 0.5 mm in size, these insects are able to cover the entire plant in a short period of time.
- Mealy aphids prefers greenhouse roses. She has an oval body with a white coating and bristles on the sides.
- Aphid rose green settles on roses growing in open ground. Usually these small green insects with brown antennae choose young shoots and buds for living.
Harm
Aphid causes tremendous damage, as it feeds on plant tissues, sucks plant juices. Young shoots, flower and leaf buds suffer most from aphids. As a result, leaves and entire branches become deformed and turn yellow, and the buds, not having time to blossom, fall off. The plant affected by aphids weakens, its resistance to diseases and temperature changes decreases.
Also aphid emits honey dew - sweet and sticky, similar to syrup. These secretions cover the leaves and stems of rose bushes, making the plant unstable to fungal diseases and increasing the risk of black mold. In addition, aphids are a carrier of viral diseases. Therefore, when a pest is found both at home and in garden flowers, it is urgent to start fighting it.
Where and why does it appear?
Possible causes of aphids:
- In the soil into which the bush was transplanted, aphid eggs were laid for the winter.
- The newly acquired bush is already affected by aphids.
- A small number of insects and birds feeding on aphids.
- Spread using an ant.
Ants are aphids' best friends. They feed on honey dew and help spread the pest.
Ants protect aphids from other insects and transfer it from one plant to another, contributing to the emergence of new colonies and a source of food for themselves. The parasites form a colony in a few days, and during the season the number of colonies on the bushes can reach 50. Ants keep aphid eggs in the winter and spread them in plants in the spring.
- Flying female aphids, settlers - after fertilization, they fly away from the colony to lay eggs in a secluded place.
- Pests can get on indoor roses from the street on clothes or with pets.
How to fight?
You can get rid of the pest in indoor and garden flowers both by folk remedies, and by chemical and biological methods.
Folk remedies
These are the most gentle and environmentally friendly aphid control measures. Many products do not kill pests, but scare them away. from treated plants. They also fertilize the soil, are safe to use (if the treatment is carried out correctly), affordable and cheap.
But there are also shortcomings in folk methods. So, drugs are quickly washed off by rain or when watering, and repeated re-treatments are usually required.
You can’t spray plants with any means on a bright sunny day, since burns may occur on the leaves (drops are an imitation of a lens).
General rules:
- adding soap or green soap to the solution;
- treatment with stems and leaves (not soil);
- the underside of the leaves must be processed - favorite habitats of aphids;
- spraying in cloudy dry weather, and preferably in the evening, when the working day for beneficial insects is completed;
- watering plants 2-3 days after treatment.
Basic recipes and methods of use:
- The most toxic of alternative methods is a solution of ammonia (ammonia). When using it, you need to use gloves and a respirator. To obtain a solution, mix in 10 liters of water 2 tablespoons of ammonia and 50 g of soap grated on a grater, then pour a bush from a watering can. Repeat the procedure every 2 weeks (but use the preparation freshly prepared - ammonia quickly disappears).
- Mustard - scare away aphids and ants. Take 10 g of mustard per liter of water, insist in warmth for 2 days and dissolve in 5 liters of water. Spray the plant, repeat in a week.Dry mustard can be sprinkled with an anthill and ants paths to scare them away.
- Simple household or tar soap 250 g grate and dissolve in 10 liters of water. Spray the bush from a plastic bottle with holes in the cap (the spray bottle may clog). After 2-3 days, wash off the soap film from the plant so that it breathes better.
- Green soap is more environmentally friendly than household soap. In 10 liters of water, mix 250 ml of soap until foam and spray in the same way as household soap. It is necessary to process bushes in such a way three times a year - in spring, summer and autumn.
- Infusions and decoctions of herbs-insecticides - fresh potato tops, garlic cloves, onion heads, pharmacy chamomile, celandine, aconite, tobacco, hogweed and others. Pour about 250 g of grass with hot water, boil for half an hour and leave for 2-3 days in a sealed container. Strain, dilute with water 1: 3, add soap and spray the affected bushes.
Chemical and biological methods
It is undesirable to use chemicals to control aphids on roses. The specific smell of chemicals will prevent the aroma of flowers from appearing. In addition, petals treated with chemicals cannot be consumed for cosmetic and culinary purposes. And do not forget about the dangers of pesticides for crops growing next to roses.
But if, nevertheless, the need arose for the use of chemicals, they are not difficult to purchase in specialized stores. The main thing is to decide what exactly to spray the plants with.
- Inta-Vir can be in tablets or in powder. With a solution of the drug, rose bushes are sprayed before flowering. Possible use for both garden and indoor plants.
- Fitoverm brings minimal harm to the environment. Indoor roses are sprayed with them when aphids are found, and garden roses - before flowering begins.
- Actara is often used by gardeners. A solution of this agent is watered and sprayed with plants. After watering, the drug is distributed over the tissues of the leaves and retains its effect for up to 2 months. In the same way, Commander and Confidor Extra are used.
- Contact preparations, such as Fufanon, Karbofos kill insects in contact with the solution.
- Intestinal contact chemicals: Akarin, Actellik, Agravertin, Decis-pro, Actofit.
When working with chemicals, you must protect yourself - gloves, a bathrobe, glasses, a face mask. At the end of processing take a shower, change clothes.
The biological methods of combating aphids include the use of natural enemies of these pests - birds and insects. When using pesticides, there is a high risk of destroying insects that eat aphids. To avoid this, you can water the roses with a stream of water from a hose within a week every other day. Aphids washed away from the bushes will drown, the rest will be eaten by insects. This method will help restrain the reproduction and spread of aphids in the garden.
One ladybug per day can eat up to 250 aphids. They also like to eat aphids by lizards, wasps, cocks, long lion, ground beetles, lacewings, weevil bugs.
You can also plant plants that attract beneficial insects. Thus, a natural balance between beneficial and harmful insects will be maintained and the number of aphids will be reduced. It is good to plant such plants as marigolds, lavender, garden buckwheat, calendula, thyme, sweet clover, odorous dill, tansy and others.
How to process hibiscus?
Hibiscus, or Chinese rose, is popular with flower growers due to its endurance and unpretentiousness in care. But this flower can also be invaded by aphids, so every gardener should know how to process a Chinese rose. If the lesion is small, then treatment with a soap solution will be sufficient. With a significant lesion, it makes sense to use chemicals, for example, Intavir, Aktara.
Preventative measures
Consider what to do so that after the destruction of aphids, it no longer appears on plants.
- Prevention is very important in the fight against aphids.
- It is necessary to carefully choose a site for the future rose garden, to properly care for the flowers - watering, fertilizing, lighting.
- Rose bushes should be regularly examined for pests, remove damaged and dried leaves, shoots, flowers.
- About once a month, it is required to wash the plants with a stream of clean water or a soap solution.
There are many ways to control pests, for every taste. But subject to all preventive measures and proper care of the rose, still resorting to such measures will have to be much less common.
Interesting video
We offer you to watch a video about how aphids cause roses and how to get rid of it: