You can usually get a soil test kit from your local county extension office, and they will recommend any amendments that your soil may need. Wait to add the manure until you get the results from the soil test. Also make sure that your raspberries are not too crowded. You may need to prune out some of the old plants.
You can usually get a soil test kit from your local county extension office, and they will recommend any amendments that your soil may need. Wait to add the manure until you get the results from the soil test. Also make sure that your raspberries are not too crowded. You may need to prune out some of the old plants.