Raspberry cuttings root readily in spring or autumn, with spring offering the highest success rates because the plant is already producing growth hormones that encourage new roots. You can propagate raspberries from stem cuttings, root cuttings, or by burying cane tips into the soil. The method you choose depends on the type of raspberry you’re growing and what material you have available.
Choosing the Right Cane
Take cuttings from one-year-old canes. These are the ones that grew during the previous summer, and they have the best rooting potential. Look for healthy, vigorous canes on a plant that produces well. Avoid canes that show signs of disease, damage, or weak growth. The goal is to clone your best performer, so start with your strongest plant.
Stem Cuttings in Spring
In late spring, when new green growth is actively pushing out, cut 4- to 6-inch sections from the tips of young canes. These softwood cuttings are flexible and green, not yet woody. Make your cut just below a leaf node (the bump where a leaf attaches to the stem), since this is where root cells concentrate.
Strip the leaves from the bottom half of the cutting, leaving two or three leaves at the top. If the remaining leaves are large, cut them in half to reduce moisture loss. Dip the cut end in a powdered rooting hormone. This step isn’t strictly required, but it significantly improves your odds. Any general-purpose rooting powder from a garden center works fine for raspberries.
Push the cutting about 2 inches deep into your rooting medium, firm the mix around the stem, and water it in. Place the pot in bright, indirect light. Direct sun will stress the cutting before it has roots to take up water. Keep the medium consistently moist but not waterlogged. You should see new growth within 4 to 6 weeks, which signals that roots have formed.
Hardwood Cuttings in Autumn
Once raspberry canes go dormant in late autumn, you can take hardwood cuttings. These are thicker and woodier than spring cuttings. Cut 8- to 10-inch sections from one-year-old canes, making sure each piece has at least three visible buds. In autumn, the buds appear as small raised bumps along the cane. In spring, those same buds look like green bumps or tiny emerging leaves.
Insert the cuttings into pots of moist rooting medium with the bottom two-thirds buried and a few buds visible above the soil line. Place them in a sheltered spot outdoors or in an unheated greenhouse. Hardwood cuttings root slowly over winter and will be ready to transplant by late spring. They require less attention than softwood cuttings since the cool, damp conditions of winter keep them from drying out.
Root Cuttings: An Alternative Approach
Red and yellow raspberries spread naturally through their root systems, which makes root cuttings a reliable propagation method. In late autumn or early spring, dig around the base of an established plant and cut pencil-thick root sections about 4 to 6 inches long. Lay these horizontally in a tray of moist potting mix, cover with about half an inch of medium, and keep them in a cool, bright location. New shoots will emerge from the root pieces within a few weeks in spring, and each one becomes an independent plant once it develops its own root ball.
Tip Layering for Black and Purple Varieties
Black and purple raspberries don’t spread by underground runners the way red types do. Instead, they propagate best through tip layering, where you bury the tip of a long, arching cane into the ground and let it form its own roots while still attached to the parent plant.
In late summer, bend a flexible current-season cane toward the ground and bury the last 2 to 4 inches of the tip in soil. Pin it in place with a U-shaped landscape staple or a small rock. The buried tip will develop its own root system over autumn and winter. The following spring, cut the new plant free from the parent, leaving about 6 inches of the old cane attached to give it stability. Dig it up with its new roots intact and transplant it to its permanent spot.
The Best Rooting Medium
Raspberry cuttings need a mix that holds moisture without staying soggy. A simple 50/50 blend of perlite and peat moss works well and is what most growers use. You can also mix equal parts peat moss, perlite, and vermiculite for a slightly more moisture-retentive option. The key qualities are good drainage and enough structure to hold the cutting upright.
Avoid using garden soil, which compacts around the cutting and invites fungal problems. If you only have potting soil on hand, lighten it by mixing in an equal volume of perlite. Whatever medium you choose, moisten it thoroughly before inserting your cuttings. You want it damp like a wrung-out sponge, not dripping wet.
Keeping Cuttings Alive Until They Root
The biggest threat to raspberry cuttings is drying out before roots form. A cutting has no root system to pull water from the soil, so it relies entirely on the moisture in its stem and what it absorbs through its cut end. Covering your pot with a clear plastic bag or placing it inside a propagation tray with a humidity dome traps moisture around the leaves and dramatically reduces wilting.
Check the medium every couple of days. If the surface feels dry to the touch, water lightly. Remove the cover for a few minutes every few days to let fresh air circulate, which prevents mold from forming on the soil surface or the cutting itself.
Temperature matters too. Softwood cuttings root fastest when the soil stays between 65°F and 75°F. A warm windowsill or a spot on top of a refrigerator can provide gentle bottom heat. Hardwood cuttings taken in autumn don’t need warmth and actually root better in cool conditions.
Transplanting Rooted Cuttings
Once your cuttings show strong new leaf growth and resist a gentle tug (meaning roots are anchoring them in the medium), they’re ready to harden off. Move them outdoors to a shaded spot for a week, then gradually introduce more sunlight over another week. This prevents transplant shock when you move them to their final location.
Plant rooted cuttings in well-drained soil with plenty of organic matter, spacing them 18 to 24 inches apart in rows. Water deeply after planting and mulch around the base to conserve moisture. New plants typically produce their first fruit in their second year, though vigorous growers occasionally fruit lightly in year one. Starting with strong, healthy cuttings from a productive parent plant gives you the best chance of a heavy-bearing raspberry patch within two to three seasons.