Blackcurrants are only recently regaining popularity in the United States, after being banned from the early 1900’s through the 20th century. Ribes nigrum is native to parts of northern Asia and Europe, and susceptible to a few pests and diseases, most notably white pine blister rust. When blackcurrant plants were imported to the US, the disease spread to domestic white pine forests, which had a negative impact on the logging industry, and led to the ban.
Blackcurrants have long been a favorite in Europe, especially in the United Kingdom, due in part to it’s use as an emergency source of vitamin C during and after WW2. The German U boat blockade prevented food supplies from reaching Britain, so the government encouraged citizens to grow blackcurrants in their home gardens. Most of the crop was made into syrups and cordials, as the fresh, raw fruit has a very strong flavor, then distributed to children across the UK.
With disease resistant varieties now available, and rising interest in the health benefits of dietary polyphenols and other micro-nutrients, blackcurrant cultivation is on the rise in the US. At Seven Trees Farm, we started with a few bushes, then quickly added more once we fell in love with the funky fruity flavor of blackcurrant cordial.
Mature bushes can produce up to 10 pounds of berries, and ours are just getting into their prime. Unfortunately we planted them a bit too close together, and too close to a neighboring evergreen hedge, but they are still managing to put out about 2 pounds of berries each so far. The plan is to try moving them once they go dormant for the season, but they may not take kindly to that due to their size. Luckily Whatcom county is a major berry-growing region and we can buy overstock plants from the larger farms nearby if we need to replace any. (Lesson learned: always give your plants way more room than any growing guide suggests.)