Do your leaves look like they've been chewed up? Then there's a good chance you're dealing with yew weevils. But the real damage happens underground, where the larvae nibble on the roots.
The best periods for intervention are from May to June and from August to October . During these months, the larvae are active in the soil. Nematodes against yew weevils can be used to target them, as long as the soil temperature remains above 12 degrees Celsius.
Between June and August, the soil is often too dry or warm, making the treatment less effective. So skip this period if it's midsummer.
👉 In short: use nematodes against yew beetles in spring or autumn, when the larvae are easily accessible.
