Fight whiteflies without chemicals
You neither spare tomato plants in the Outdoors, still in Glasshouse. White flies (Trialeurodes vaporariorum) are 1-2 mm small, floury-powdered insects that multiply explosively in summer. The females lay their white eggs by the hundreds on the undersides of the leaves. Tiny larvae hatch from this and enjoy the leaves. If the infestation pressure is high, the plant dies. So go against that Pests before:
- Protect the tomato plants in the bed with a close-meshed insect net
- as underplanting Tagetes and Nasturtiums set
- Apply beneficial insects in the greenhouse, such as Parasitic wasps,(€ 69.90 at Amazon *) Ladybug or the Predatory bugs Macrolophus caliginosus
- Hang up yellow boards
- Shake the plants to catch the swarm of flies with the vacuum cleaner
- Tomatoes not too tight plants, not more than 2 copies per square meter
also read
- Put tomatoes correctly - this is how it works in beds and pots
- Are tomatoes affected by brown rot edible?
- Thin out tomatoes - this is how you attract larger fruits
To prevent this, make a broth from oak leaves and nettle leaves and sprinkle over the bedding soil. Also work in the soil, a natural remedy for pest control.
Drive black flies off tomatoes
If black flies lay siege to your tomato plants, they are mostly thrips (Thysanoptera), also known as thunderstorm flies. Silvery blisters on the upper side of the leaves and black stains on the underside indicate an attack by the 1-2 mm small insects. Their larvae develop in the root area and cause considerable damage there. How to ward off the plague:
- hang up blue glue boards to catch the adult flies
- Remove and destroy infected parts of the plant
- in the greenhouse Lacewing larvae spread or predatory mites
- brown earth attracts thrips, hence mulch with light straw
- fertilize with Nettle manure prevents thunderstorms
- Repot tomatoes in a pot culture in fresh, disinfected substrate
Tips & Tricks
Potting soil is often infected with insect eggs. So that yourself Fly larvae not already during the sowing If you dig through tomato seedlings, the substrate is disinfected beforehand. Place it in an ovenproof dish with the lid on for 30 minutes at 180 degrees or in the microwave for 10 minutes at 800 watts.