Experienced gardeners do not recommend growing raspberries in the same place for several years.
Every 5-7 years, or even more often, the raspberry patch should be radically rejuvenated. There are several ways to do this, and perhaps the most logical of them is to move the division to a new place, planting young seedlings.
If this is not possible, you should act as follows.
How to rejuvenate a raspberry tree without replanting
To ensure that the next season passes without losses in the raspberry harvest, it is necessary to rejuvenate the plants in two stages over the course of two years.
In the autumn of the first year, you should dig up half of the existing raspberry bushes (every other one), leaving the other half to bear fruit the following season.
On the vacated plot of land, you need to remove at least two buckets of depleted old soil and fill the planting holes with new soil - soil from another place on your plot is suitable, for each bucket of which you should add one bucket of compost (humus, manure), and complex mineral fertilizer (nitrogen phosphate, etc.). It can be replaced with several mono-fertilizers (superphosphate, potassium sulfate, etc.).
Mix the fertilizer and soil thoroughly in the planting hole, working the nutrients into the soil to a depth of about 20 cm.
With the arrival of spring, the young “nettles” that have grown from the old raspberry bushes can be separated and transplanted into renewed nutritious soil.
The following season, after fruiting has finished, the old raspberries should be dug up and the same manipulations with the soil should be done, after which in the spring the beds should be filled with new seedlings.
