By Zenny
Growing black raspberries and red raspberries in the same patch may seem convenient, but it can lead to serious issues for both plants. Here’s why you should avoid it:
Disease Transmission Black raspberries are highly susceptible to mosaic virus and other diseases carried by red raspberries. Planting them close together increases the risk of cross-contamination.
Fungal Spread Red raspberries can carry fungal pathogens like cane blight and anthracnose that can devastate black raspberry plants more severely.
Different Growth Habit Red and black raspberries have different spreading habits. Red raspberries sucker from the roots, while black raspberries grow in clumps, which can lead to overcrowding and competition.
Cross-Pollination Concern Though not always problematic, cross-pollination between varieties can affect fruit quality in home gardens and confuse seed-saving efforts.
Maintenance Confusion They require slightly different pruning techniques, which can complicate care when grown together in one patch.
Spacing Need Both types need good airflow to prevent disease, but planting them too close can reduce circulation and increase humidity-related problems.
Pest Attraction Together, they may attract more pests like aphids, which can act as vectors for viruses, especially dangerous for black raspberries.