Search results
Results from the WOW.Com Content Network
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 .
Second-year plants develop racemes of flowers each containing 5–20 flowers. [4] The flowers are typically 5-merous with large, white petals and light green sepals, borne in mid-spring. [5] Second-year plants are also capable of growing the fruit which gives the plant's common name, the blackberry. The fruits are compound drupes which change ...
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.
Rubus, or Bramble, [4] is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, most commonly known as brambles. [3] [5] [6] Fruits of various species are known as raspberries, blackberries, dewberries, and bristleberries.
Blackberry plants naturally produce stems called canes that live for only two years before dying and being replaced by new stems. The first-year canes arise from the base or crown of the plant and ...
Himalayan blackberry flower, Bay Area, California. Note spider on bottom petal. Rubus armeniacus, the Himalayan blackberry [2] or Armenian blackberry, is a species of Rubus in the blackberry group Rubus subgenus Rubus series Discolores (P.J. Müll.) Focke. It is native to Armenia and northern Iran, and widely invasive elsewhere. Both its ...
Rubus vestitus is a European species of brambles in the rose family, called European blackberry [2] in the United States. It is native to Europe and naturalized along the northern Pacific Coast of the United States and Canada (British Columbia, Washington, Oregon). [2] Rubus vestitus is a spiny shrub sometimes as much as 2 meters (80 inches ...
[2] [7] There is a hybrid variety with boysenberry in Australia called Silvanberry. Classed under the blackberry family, Silvanberry plants have many characteristics commonly found among other blackberry varieties. These plants are long living (15 to 20 years) perennials, hardy and cold tolerant, easy to grow, and productive spreaders. [10]