Soil depth for raspberries

Asked March 24, 2020, 6:47 PM EDT

Hi! I’m planting raspberries next to my driveway. While installing my trellis I realized that the “soil” is mostly gravel covered with a thin layer of mulch. To what depth should I fill with soil or compost to allow the raspberries to grow? Thank you!

Multnomah County Oregon raspberries

1 Response

Thank you for your question. OSU recommends that raspberries be planted in raised bed gardens of 1.5 to 2 feet deep. You can read about this plant’s needs here: https://ir.library.oregonstate.edu/downloads/0p096714f On one hand, the gravel/mulch base will provide good drainage. On the other hand, the bedding structure and height may make it a challenge for anyone trying to open a car door (not to mention the thorns). But, good luck!