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The fruits are compound drupes which change from bright red to black at maturity. Each section (drupelet) of a blackberry contains a single seed. Second year plants die after bearing fruits, but regrow from the underground portion of the plant. There are many species of blackberries, which are edible and differ by size. [6]
Rubus ulmifolius is a species of wild blackberry known by the English common name elmleaf blackberry or thornless blackberry and the Spanish common name zarzamora.It is native to Europe and North Africa, and has also become naturalized in parts of the United States (especially California), Australia, and southern South America.
Rubus ursinus is a wide, mounding shrub or vine, growing to 0.61–1.52 metres (2–5 feet) high, and more than 1.8 m (6 ft) wide. [3] The prickly branches can take root if they touch soil, thus enabling the plant to spread vegetatively and form larger clonal colonies.
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Fruit growers are selective when planting blackberry bushes because wild blackberries may be infected, [36] and gardeners are recommended to purchase only certified disease-free plants. [37] The spotted-wing drosophila, Drosophila suzukii, is a serious pest of blackberries. [38]
Cercosporella rubi is a plant pathogenic fungus which causes blackberry rosette, [1] a disease that is also known as double blossom [2] or witches' broom [3] of blackberry. In infected plants, the symptoms that C. rubi causes are double blossoms as well as witches' brooms .
Rubus is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, commonly known as brambles. [3] [4] [5] Fruits of various species are known as raspberries, blackberries, dewberries, and bristleberries.
Wild blueberry: 1991 [47] State herb: Wintergreen: 1999 [48] State dessert: Blueberry pie made with wild Maine blueberries: 2011 [49] [50] State treat: Whoopie pie: 2011 [51] [50] State sweetener: Pure Maine maple syrup: 2015 [52] Maryland: State dessert: Smith Island Cake: 2008 [53] State drink Milk 1998 [54] State crustacean Blue crab: 1989 ...