Growing black raspberries plant is more challenging. The goal is to keep alive a raspberries cane for 16 months during its growing season- 1st year- as primocane and through its bearing season -2nd year- as floricane.
Fungus and bugs will give your share of problems. Naturally, a good cultural practice is primordial to minimize a lot of diseases.
- Promotes air circulation and sunlight exposure for faster drying of canes, foliage and fruits.
- Have good well drained soil around the plant. No wet feet or lake at the feet or around the plants
- Avoid excessive fertilization. 1″ or 2″ of compost will do the job.
- Old cane must be removed before the growth of new canes.
- Inspect frequently and remove disease canes or plants.
- Use sharp tools.
- Avoid cutting canes when the plants are wet or rain is forecast.
- Never plant black raspberries less than 200 feet from a red variety.
- Never plant raspberries where potatoes, eggplants, tomatoes and peppers plants where planted during the last 3 years.
- Plant away from wild brambles, roses and perennial weeds around.
- Use good IPM and fungus control method.
- Dispose/destroy all canes you cut.
- Buy clean disease-free plants.
One characteristic of a black raspberries plant is the number of cut you need to do for good harvest, keep control over the plants the diseases at bay .
- Summer Heading (Tipping). Spring summer until August. Pinch off (head) The tips of new canes when the canes reached a certain height; about 28 to 34 inches. This induces growth of side branches and a bigger harvest. Tipping is done by removing the top 2 to 3 inches of a new shoots.
- Removal of canes after fruiting. Summer. Removing old canes by cutting close to the ground will diminish disease problems.
- Early spring cleanup. Late winter/early spring. Remove primocanes small than a pencil by cutting close to the ground. Keep 4 to 6 strong canes per hill is recommended. Head back laterals by keeping 8 to 10 buds by branches. If not done during last summer head back the canes to the floricanes height.
All this cut will gave you a strong harvest with big size fruits.
Yep, for somebody who wants raspberries with less problems and work, do like Bob: grow fall, aka ever-bearing raspberries. One cut in late winter, keep them in line and no big worries about diseases and other problems.