Gardening Questions And Answers
Hard, white spots on the leaves of blackberry plants (Rubus fruticosus) are largely unheard of, but they are common on the fruit. Generally, white spots on blackberries are caused by growing conditions or insect pests rather than disease and white drupelet syndrome isn’t harmful and usually can be resolved.
After the canes have produced fruit, you should prune them back to the ground to leave room for the stronger, 1-year-old canes. Some pruning should be done every spring to keep the plants from becoming tangled and to improve their ability to bear. Prune trailing blackberries in the spring for good growth habits.
During the growing season blackberries require frequent irrigations so that they are always moist. Blackberry plants require approximately 1 to 2 inches of water per week from mid-May through October. It is best to keep the plants moist at all times without saturating the soil and rotting the roots.
The fungus Leptosphaeria coniothyrium infects the canes of blackberry vines and causes them to wilt and turn brown or black. The fungus overwinters in infected canes and the wind spreads the spores. Remove and destroy the infected canes during dry weather to help prevent the spread of spores by splashing water.
About Blackberry Planting Blackberries thrive in climates with warm days and cool nights. They may be erect, semi-erect or trailing in habit. The erect type of berry has thorny canes they grow upright and need no support. They produce large, sweet berries and are more winter hardy than their counterparts.
Watering. During the growing season blackberries require frequent irrigations so that they are always moist. Blackberry plants require approximately 1 to 2 inches of water per week from mid-May through October. It is best to keep the plants moist at all times without saturating the soil and rotting the roots.
They can be trellised or grown in the landscape as a hedge or shrub border. Trailing blackberries have flexible canes that must be tied to a trellis so they don’t flop to the ground. All blackberries grow best in full sun, and almost all varieties are self-fruitful, meaning that you need to plant only one […]
Many blackberry varieties remain symptomless when infected. Symptoms of infection by the leaf curl virus gave rise to the disease name. The leaves on infected canes are stiffly arched or curled downward. Leaves of red raspberry become yellow, while those of black raspberry take on a dark-green, greasy cast.
Of all the species of blackberry (Rubus), cutleaf blackberry (R. Weedy blackberries spread underground and take root wherever the long, arching vines touch the ground. Animals eat the berries and spread the seeds to distant locations through their digestive tract. One seedling can eventually form a massive thicket.
Blackberry fruit rot is caused by Botrytis cinerea, a fungus that can affect nearly every part of the plant. Fruit rot favors humid environments. It is especially prevalent when weather is wet before and during blooming, and again when berries ripen. The fungus overwinters on plant debris and weeds.
The big problem with wild or homegrown blackberries is that there are always a number of really teeny tiny bugs, worm-like creatures and caterpillars that hide out in these fruits. You probably don’t want to be eating these! Even more reason for these fruits to be getting a jolly good wash and clean.