Small berries can be a result of unsatisfactory growing conditions, like too little sunlight, too little water, or too much nitrogen in the soil, as well as other factors, like too little pollination or infection by damaging insects and viruses. It could also be the case that your raspberry plants need more pruning (see above for tips). Make sure they’re getting enough water, sun, and low-nitrogen fertilizer. If that doesn’t help in future seasons, you may need to get some new plants.
Small berries can be a result of unsatisfactory growing conditions, like too little sunlight, too little water, or too much nitrogen in the soil, as well as other factors, like too little pollination or infection by damaging insects and viruses. It could also be the case that your raspberry plants need more pruning (see above for tips). Make sure they’re getting enough water, sun, and low-nitrogen fertilizer. If that doesn’t help in future seasons, you may need to get some new plants.