In my experience, cranberries are one of the easier fruits to grow. They don’t seem to be bothered by pests or disease. Weeds have been a problem though. The plants are small, perhaps six inches (15 cm) tall, and weeds can grow up through them. We’ve applied mulch in the past, but the plants have grown together too thickly to do that now.
Commercial growers flood their cranberries when they harvest. The fruit floats and is easy to collect. You don’t need to grow cranberries in a bog though, it just takes a little more effort to pick them.
The fruit should be ready to harvest this fall.