Blackberries planted in the year 1975 are still blooming in 2016
These Texas native blackberries are very hearty plants.
I am able to still grow these Texas native blackberries in 2016 that were originally from a back yard of a friend's horticulturist father's garden way back in the year 1975.
They are presumably Rubus spp
From Wikipedia: "The blackberry is an edible fruit produced by many species in the Rubus genus in the Rosaceae Family, hybrids among these species within the Rubus subgenus, and hybrids between the Rubus and Idaeobatus subgenera. The taxonomy of the blackberries has historically been confused because of hybridization and apomixis, so that species have often been grouped together and called species aggregates. For example, the entire subgenus Rubus has been called the Rubus fruticosus aggregate, although the species R. fruticosus is considered a synonym of R. plicatus." -source URL: https://en.wikipedia.org/wiki/Blackberry
The thing I like about this blackberry is that is has survived all these years after several transplants and has survived the hot blistering summers of Texas mid afternoon heat waves and although the grackles and blue jays eat a lot of them, if I am quick to pick them when they are ripe, I am lucky to get a handful. The best way to prevent birds and squirrels from attacking these is to place a simple net over them. I have used the net before but due to the fact small lizards get caught up in the net I don't use it any more for this reason. I prefer to just grow them and enjoy watching them flourish and if a bird wants to munch on a few that's alright by me. I can buy a quart of blackberries from the ALDI for a good price when they are in season and they are just as good tasting as the ones that grow in my tiny garden here in Big D, Dallas, Texas.
another source from Dallas Morning News: http://www.dallasnews.com/lifestyles/home-and-gardening/headlines/20140212-how-sweet-it-is-add-fruits-to-the-menu-of-backyard-plants.ece
I haven't a single good pic of my blackberries as they have already flowered and now only green fruit is visible but if you want to look at a very good pic of this plant just click on the link to a pic below:
More blackberry links for you to look at:
Image Credit » https://pixabay.com/en/home-office-workstation-office-336377/