Wednesday, January 27, 2010

Initial Plant Write-Up: Raspberries

I decided that I want to grow raspberries in the garden! There are two different types of raspberries—ever-bearing and standard. Standard raspberries grow well in the Pacific Northwest, but not San Diego. However, ever-bearing raspberries grow well in San Diegan climate. “San Diegan Raspberries” are referred to as perennial sub-shrubs, meaning the plant should have more than two seasons of producing berries.

From my research, it seems that the best method to grow raspberries in our climate is using bare-roots. To do this, I would have to use a young raspberry plant that was dug up when it was dormant and plant it in a bed of soil. I can find these at a local plant nursery. It is best to plant the bare-roots very soon after you buy them, but if they must be stored before planting, they should be kept with their roots in a bucket of damp sand or sawdust and out of sunlight. Since the bare-roots are at the end of their dormant season and in their prime for producing fruit, they should start producing berries within weeks of planting.

The amount of garden space needed is dependent on how many raspberry plants I will be planting. Each plant should be planted 4 feet apart and, if in rows, each row should be about 6 feet apart.

The raspberry plants should be grown in a sunny area of the garden. The soil should be cultivated and rich with organic material and would preferably have a vegetable fertilizer applied before planting. To plant the bare-roots, I would make a hole in the soil and simply put the root in at about the same depth that they were in at the nursery, then cover it with soil. The soil can be fertilized with a fertilizer with an N-P-K ratio of 10-10-10. The berries should be watered at the base/deep soil on a weekly basis and harvested when they achieve good size and color. Ripe raspberries will be firm and dark red, not soft. Gently pull a berry to remove it, but if it doesn’t easily come off, leave it to ripen longer.

A berry garden would work well and the raspberries could grow alongside blueberries, blackberries, strawberries, or boysenberries. In the United States, 90% of all raspberries in stores come from California, Washington, and Oregon. Nutritionally, raspberries are great, as they are high in fiber, vitamin C, potassium, and folate. They can help lower high blood pressure and may help reduce inflammation of joints.