Answer: If the plants are producing flowers, they are healthy. If the flowers do not turn into fruit, there's a pollination problem. Bees are the main pollinators of raspberries and if you or someone in your neighborhood is using extreme amounts of insecticides, that might be the answer. You need insect activity for pollination and pollination for fruit. I don't know what to suggest other than planting a bee attracting plant near your raspberries. Try bee balm or buckwheat to attract bees to your garden.
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