With Rubus 'Caroline', you can grow a primocane-fruiting red raspberry that produces heavy crops of flavorful berries on strong, upright canes. This variety is valued for large, deep-red fruit with a classic, rich raspberry taste, and it can give you a dependable late-season harvest when many other fruits are winding down.

Give your plants a sunny site for best yields and berry quality. Full sun helps canes grow sturdy and encourages better ripening. In hot climates, a little afternoon shade can reduce stress, but prioritize sun whenever possible. Provide a trellis, fence, or wire support so the canes stay upright and air can move through the planting; good airflow also makes harvesting easier and keeps the patch looking tidy.

Plant in well-drained soil that holds even moisture. Water deeply during dry spells, especially while fruit is forming, and mulch to help keep the root zone cool and reduce swings in soil moisture. Space plants so the mature spread (about 48-72 inches) is accommodated, and allow room for picking between rows. Like most raspberries, 'Caroline' responds well to consistent fertility; use compost or a balanced fertilizer based on your soil test and local guidance.

Pruning is straightforward once you choose your harvest style. For a single fall crop, cut all canes to the ground in late winter or early spring; new canes will grow and fruit later the same season. For two crops (summer plus fall), keep healthy floricanes for early fruiting, then remove spent canes after harvest while managing the new primocanes for the later crop. In USDA zones 4-7, protect crowns with mulch where winters are severe and keep weeds and grass from competing right at the base of the plants.

Specifications

• Cold hardiness zone: 4-7 (-30 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• Light: Full sun
• Growth rate: Fast
• Mature height: 48-72"
• Spread: 48-72"
• Edible: Yes

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