The snow melts, the canes wake up, and your raspberries are suddenly hungry. Early spring is the sweet spot for their first feed, and yes, these plants want more food than most berry bushes. Think of raspberries as the gym rats of the garden: high output, high appetite, especially for nitrogen.
Why feed now
In April, raspberry bushes are just coming out of winter dormancy. A nutrient boost right now powers strong new growth and sets up a better harvest later. This is the moment to give them nitrogen-forward nutrition and get it to the roots while the soil is cool and workable.
What to use
The classic route is a fermented cow manure infusion. It is simple, effective, and packed with the kind of nitrogen raspberries love. Mix it right, pour it under the canes, and let it do its thing.
Prefer something cleaner or faster? Urea works beautifully in early spring. It is straightforward to measure and dissolves easily for even feeding.
Another solid option: ammonium nitrate. A nitrate blend with added micronutrients also gets the job done, as agronomist Victoria Radzevskaya notes. It delivers readily available nitrogen and a little extra trace support for early growth.
Timing and how to apply
Feed when the soil has fully thawed and warmed a bit. Raspberries respond best to nutrients on moist ground, so water first if the bed is dry, then feed. Apply solutions at the base of the plants. Keep the mix on the soil, away from tender new shoots.
With manure infusion, plan on 5–7 liters per bush. For urea, the standard mix covers two to three mature bushes. Using ammonium nitrate? One 10-liter bucket covers roughly one square meter of raspberry row or bed.
Prep and aftercare
If you mulched in fall, pull back and clear the old layer, then lightly loosen the soil around the canes so the feed penetrates. After you fertilize, add a fresh layer of mulch using well-rotted compost or humus. That locks in moisture and keeps nutrients where the roots can use them.
Quick ratios and rates
- Fermented cow manure infusion: 1 part manure to 10 parts water; apply 5–7 liters per bush.
- Urea: 1 tablespoon per 10 liters of water; enough for 2–3 mature bushes.
- Ammonium nitrate (or nitrate with micronutrients): 1 tablespoon per 10 liters of water; about 1 bucket (10 liters) per square meter of planting area.
- Always feed on moist soil; water first if needed, then fertilize at the base and remulch with compost or humus afterward.