If they don’t grow wild in your area, you can get the berries year-round from the produce or freezer section of your grocery store -- or maybe from a farmers market during the warmer months of the year. Depending where in the United States you live, ripe blackberries can be found from May through September.
http://www.livestrong.com/article/482462-when-are-blackberries-in-season/
In the winter, remove the dead floricanes (old fruiting canes) from the hedgerow. Also shorten the lateral branches to about 1½ to 2½ feet. With primocane-fruiting erect blackberries, cut all canes off just above the ground in the late winter for the best fruit. In the summer, when the primocanes are 3½ feet tall, removed the top 6 inches.
http://www.almanac.com/plant/blackberries
There are two distinct types of blackberry, the European and the North American. The North American types tend to fruit earlier in the summer and the combination of the two help to give a consistent supply of blackberries. The British blackberry season begins in June, reaches its peak in August and continues until the first frosts in November. New varieties include Chester, Driscolls Carmel, Driscoll Cowles, Loch Ness, Loch Tay, Karaka Black and Obsidian.
http://www.britishsummerfruits.co.uk/html/blackberries.htm
Erect blackberries which produce fruit with relatively large seeds. Flavor and aroma are not considered as intense as in the training blackberry cultivars. They are semi-hardy in climates with rapid springtime temperature shifts, like Colorado.
http://www.almanac.com/plant/blackberries
The domestic blueberry season runs from April to late September, and once that wraps up, imports from Chile and Argentina start flowing in. In other words, fresh blueberries are always available; from October to March, you can find juicy and plump blueberries in the supermarket just like you do all summer. That said, there are other ways to take advantage of peak blueberry season here in North America (June and July). Since other forms, like frozen, are just as yummy and easy to use, you can stock up the ample supply of fresh blueberries in the summer time, and keep them in your freezer for up to six months.
http://www.blueberrycouncil.org/about-blueberries/blueberry-season/
While blackberries grow and ripen from late spring to early fall, peak season in the United States runs from July to August -- with the harvest beginning earlier in Southern states and later in the Northwest.
http://www.livestrong.com/article/482462-when-are-blackberries-in-season/
We live in central florida and in December put in 330 Navajo blackberries one year old plants two questions # 1.. its only feb. and we are seeing berries on most of the plants which are only about one.
http://www.almanac.com/plant/blackberries
Blackberries grow throughout the world and the fruit has been known in the past by many names, including brambleberries, brumblekites and lawers. There is evidence that blackberries were eaten in Britain in Neolithic times and were surrounded by superstitions. In the south west of England it was believed that the first blackberry spotted growing each year would banish warts.
http://www.britishsummerfruits.co.uk/html/blackberries.htm
Growing up, you probably only ate blueberries as a summertime fruit, but we’ve got news – these wonderful little berries can add flavor to any dish (or be served as a simple snack) at any time of year! Thanks to our friends in South America, we have them at our finger tips year-round.
http://www.blueberrycouncil.org/about-blueberries/blueberry-season/
Second year floricanes produce long shaped fruit with relatively small seeds and a highly aromatic, intense flavor. They are not hardy in northern climates, experiencing damage at temperatures of 13°F in mid winter, and in the 20s°F in late winter/early spring.
http://www.almanac.com/plant/blackberries
when is blackberries in season
Blackberry season is from July to August. Blackberries are in season from July to August.