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The raspberry spur blight fungus spreads through the pycniospores that are released from the pycnidia. The spores are released and infect other raspberry plants with the help of rain through open wounds or natural openings. [7] The fungus will then spread throughout the plant and will live in lesions during the winter to survive.
The fruit is orange or red, about 1 cm diameter, edible, produced in summer or early autumn; in botanical terminology and like all members of Rubus, it is not a berry at all but an aggregate fruit of numerous drupelets around a central core. Ripening occurs from early summer. [7] [4] The canes have red glandular hairs.
Rubus deliciosus is a deciduous shrub or vine growing to 1.5 m (5 ft), rarely 3 m (10 ft), with arching stems. Unlike many species of Rubus, the flowering stems are perennial.
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.
Pruning is a horticultural, arboricultural, and silvicultural practice involving the selective removal of certain parts of a plant, such as branches, buds, or roots. The practice entails the targeted removal of diseased , damaged, dead, non-productive, structurally unsound, or otherwise unwanted plant material from crop and landscape plants .
Two types of raspberry are available for commercial and domestic cultivation; the summer-bearing type produces an abundance of fruit on second-year canes (floricanes) within a relatively short period in midsummer, and double or "everbearing" plants, which also bear some fruit on first-year canes (primocanes) in the late summer and fall, as well ...
Rubus strigosus, as treated here, is widely distributed in North America, particularly the more boreal regions. Some authors also treat various raspberries in eastern Asia, east from the Altai Mountain Range in Mongolia to Manchuria and Japan in this taxon (where it is suggested to have originated along with a great deal of the North American flora), [7] but others include all Asian ...