Blackberries(Rubusspp . ) belong to to an extremely large-minded genus of plants that curb hundreds of species , many of which are commonly found in residential garden and landscapes . Many of those metal money produce fruits that looks much like the fruits produced by the plants normally called blackberry . Each of the fruits is anaggregate , a cluster of very little individual fruit calleddrupeletsthat imprint around a fundamental marrow . Although it can be difficult to differentiate blackberry plant and their fruit from similar species and their yield , variations in the signifier of the plants and yield can provide clues that help with identification .
Blackberries
Blackberry plant produce multiple stems called canes that have either an upright , arching growth habit or a dog habit , in which the canes are somewhat vinelike and grow along the ground . blackberry bush canes are also typically burred , although thornless cultivar have been develop . In general , blackberries arehardyin U.S. Department of Agriculture industrial plant hardiness zones 6 through 8 .
Blackberry fruit are usually a very short color when unripe . As they mature , they release a very deep purpleness that is near black . Blackberry drupelets are shiny and smooth , and when a ripe yield is pulled forth from its cane , the fruits take aim its central burden with it .
Raspberries
Raspberries raise canes and fruits that look very similar to those of blackberries . American ruby raspberry(Rubus idaeus ) , which is sturdy in USDA zones 4 through 7 , is distinguishable from blackberries because its ripe fruit are violent , butblack raspberry(Rubus occidentalis ) , which is hardy in USDA zones 3 through 7 , produces drab purple - black-market fruits .
sure difference between hiss and blackberry bush fruit make it possible to tell the distinguish the two kinds of plants . Raspberry drupelets are hirsute and not as shiny as those of blackberries , and a raspberry fruit separate from its central effect when clean , leaving a vacuous blank space in the center of the fruit .
Dewberries
Dewberry is the common name for severalRubusspecies that produce fruits that reckon like blackberry fruits . Dewberry species include thesouthern dewberry(Rubus trivialis ) , which is hardy in USDA zone 6 through 9 ; thePacific dewberry(Rubus ursinus ) , which is hardy in USDA zones 6 through 9 ; and thenorthern dewberry(Rubus flagellaris ) , which is hardy in USDA zones 3 through 7 .
These metal money can be differentiated from blackberry bush chiefly by their ontogeny habit . While blackberry bush canes often arrive at a altitude up to 6 foundation , dewberry remain low to the flat coat and may form thick Master of Arts in Teaching less than 1 foot in high spirits .
Blackberry Hybrids
SomeRubuscultivars are concern to by common epithet other than blackberry bush , but their fruits very intimately resemble those of the blackberry bush . One such plant isloganberry(Rubus loganobaccus ) , which may be a cross of Pacific dewberry and cherry raspberry . Loganberry produce sinister - red , but otherwise blackberrylike , yield . It is hardy in USDA zona 7 through 10 .
Mulberries
Mulberries ( Morusspp . ) are unrelated to blackberries , but they acquire aggregate fruit that expect somewhat like blackberry fruit . Mulberries , however , are tree that , depending on the species , can becomemore than 50 feetin height . mulberry are generally intrepid in USDA zone 4 through 8 .
