Flowers and leaves of some plants frighten off mean insects and attract useful. It is easy to grow up these plants, they are true allies of gardeners.
Wormwood
- excellent herbicide
Latin name: Artemisia. Put at foot of bushes of large perennials, at currant to limit distribution of weeds. Different types of wormwood contain substance artemisinin which gets into top soil. This substance blocks germination of seeds and considerably limits growth of plants. Other plants - herbicides: sage, oregano, thyme. But Artemisia absinthium grade wormwood so strong that it is impossible to put it near roses and vegetables.
Fennel – nectar for useful insects
Latin name: Anethum graveolens Some wreckers are destroyed by larvae of useful insects - God's cows, flies-zhurchalki, lacewings …
Females of these insects need food to lay eggs. They eat nectar and pollen of such plants as fennel and also thistle family and mint family (coriander, dudnik)
Budley – the house for wasps
Latin name: Buddleja. Budley it is used as green hedge or for decoration of flower bed. Of course, purple brushes of budlea attract many butterflies. But their stalks can be useful. In hollow of this tree like to arrange slots some species of wasps destroying larvae of wreckers.
Nasturtium - real trap for plant louse
Latin name : Tropæolum majus
Seed nasturtium along kitchen garden or under plants which are susceptible to plant louse. The nasturtium attracts to itself plant louse, saving the next plants.
Spinach - the next benefit
Latin name: Spinacia oleracea
Sow ranks of spinach between ranks of vegetables of family of cruciferae family (cabbage, turnip, cress) to struggle with flea beetles. Roots of spinach emit substances which promote growth and strengthening of resistance to parasites of the plants growing nearby. Spinach can be also used as green fertilizer in garden (siderata).
Marigold - bait for cabbage scoops
Latin name : Calendula arvensis
Sow ranks between vegetables of family of cruciferae family.
Huge marigold - against nematodes
Latin name: Tagetes minuta
Put on edge of beds with tomatoes. Roots of these marigold emit the substances active against nematodes which remain in the soil within three more years. Do not allow marigold to form seeds. They very quickly to extend on all garden.