Question: fire blow.
Hello, my name is Francesca. My husband and I noticed that the hedge in the garden (a Thuja) suffered the "blow of fire". They advised us to remove it and do the treatment on the ground with the Bordeaux mixture before planting a new hedge. I have read many indications on how to use it but I wanted to ask you for a confirmation:
1) Can we really do the treatment on the ground where we removed the thuja? Is it dangerous for the new hedge?
2) a nurseryman has advised us to plant the Photinia Red Robin as it appears to be immune to this disease. It's true? If not, can you recommend a hedge that is resistant to the blast of fire?
I have a little fear of using such a toxic substance but I would like to avoid getting the shot back in the future.
I thank you for your kindness. I look forward to receiving your feedback. Greetings. Francesca
Answer: fire blow.
the blast of fire is a devastating bacterial disease, whose control has been taking place in Europe for years, as it is very dangerous even for all rosaceae, that is to say for most fruit plants; the fight against this disease unfortunately involves the uprooting and destruction by fire of the affected plants, as there is no cure. Even in your case, you have to intervene, destroying the plants. The soil should be cleaned with Bordeaux mixture, which is a product widely used in agriculture and fruit-growing, even in organic farming. I agree with the nurseryman that it is appropriate to eradicate the whole hedge, because you cannot know if the disease has already spread to plants near the one that showed the noticeable symptoms. In addition to dealing with Bordeaux mixture, you can disinfect the soil by covering it with dark towels and letting the sun, by heating the sheets, disinfect it by bringing it to a high temperature.
Later you can place another hedge; photinia is also subject to fire blight, but there are some varieties that seem to be more resistant to this disease. Unfortunately, the most common hedge plants are subject to fire, like the tuja, the cotoneaster and the pyracanthe.
After planting your new hedge, in order to prevent the bacterium from re-occurring, it would still be advisable to use copper-based preventive treatments in autumn and late winter, when there are no flowering plants in your garden (even the copper, like the Bordeaux mixture, is a product also used in organic farming, as, although it is not entirely harmless, it leaves no residue on the plants in the garden for long). I advise you to remember to practice preventive treatments, as a plant in your garden is sick, and the fact that you remove it, does not exclude that the bacterium remains present in the garden, in the ground or in other plants. So for a few years he practices preventive treatments, and quickly remove any twig (even tiny) that shows sudden drying out.