The formulation of this fertilizer is 4-3-4, which is considered ideal for all fruit-based plants such as blueberries, strawberries, and raspberries. What to Use for Fertilizer on Raspberry Plants. Raspberry: manure actually shall work well for raspberries. Don't use manure of any kind for blueberries because of high salts in the manure, which blueberry doesn't like it. The best fertilizers start working as soon as your plants get transplanted into the ground. prefer fertile, well-drained and deep soil, but there are many ways to effectively apply fertilizer. Or you An Organic Fertilizer that produces more berries with minor nutrients while giving blueberries, raspberries and strawberries the nutrients they need to thrive. The original “mother” plants are usually at peak production for just one to three years. During the growing season, mother plants produce a crop Chemical fertilizer such as triple 16 will work fine. I suspect that your raspberries will do fine with Hollytone, just don't add any extra fertilizer. Unlike blueberries, raspberries, currants and others, strawberry plants are short-lived. Our Very Berry Fertilizer is specially formulated for blueberry bush care and is the ideal blueberry fertilizer to … I can't say if that is true for your soil, I don't have enough At planting time, a handful or recommended liquid amount of fertilizer should be applied around (not Around here, we have to measure the soil pH to grow blueberries successfully. Fertilization of raspberry plants aids with vigorous growth and crop production. Raspberries (Rubus spp.) Fertilizing raspberries at the right time of the year helps the plants grow and produce tasty fruit. This fertilizer has proven to be effective and beneficial for the growth of blueberries. Before planting for the first time, an organic fertilizer high in nitrogen should be added and mixed well into the top 12 inches of soil. Phosphorus fertilizer rates for blueberries, raspberries, and strawberries based on soil tests.