It is better to start work in early spring, as soon as the snow cover disappears.
First of all, you need to remove all the garbage, old leaves, and covering materials. Parasites can hide there.
In addition, the mulch needs to be replaced. It is better to water it with Bordeaux mixture or a solution of potassium permanganate beforehand. Ash and tobacco dust also help in the fight against harmful insects.
It is necessary to carry out pruning. All old and broken branches must be removed.
The bushes can be treated with mustard infusion. For 10 liters of water, take only 20 grams of powder. Let the product sit for about 12 hours.
Experienced gardeners recommend planting plants next to raspberry bushes that repel insects with their aroma.
In this case, the beds can be decorated with basil, onions, tansy, and cilantro.
Otherwise, you need to remove weeds and garbage from the area in a timely manner, so as not to give pests a chance. It is also advisable to inspect the raspberry patch for insects throughout the season, and not allow it to become too thick.