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Blackberries and raspberries (excluding red raspberries, which have a different growth habit and pruning schedules) should have their fruit-bearing canes tip-pruned back in late winter to control ...
As with other dark raspberries, the tips of the first-year canes (primocanes) often grow downward to the soil in the fall, and take root and form tip layers which become new plants. The leaves are pinnate, with five leaflets on the leaves' hardy stems in their first year, and three leaflets on leaves on flowering branchlets with white (and ...
A raspberry leaf spot infection initially causes dark green circular spots on the upper side of young leaves, which will eventually turn tan or gray. [3] These spots are typically 1–2 millimetres (0.039–0.079 in) in diameter, but can get as big as 4–6 millimetres (0.16–0.24 in). [4]
When pruning limbs off large shade trees, use the three-step approach. The first cut should be from below and 15 or 18 inches out from the trunk. Cut up 1/4-way into the bottom of the branch (not ...
Raspberry spur blight is caused by the fungus Didymella applanata. [2] This plant pathogen is more problematic on red raspberries (Rubus idaeus) than on black or purple raspberries. The fungus infects the leaves first and then spreads to the cane. It causes necrotic spots on the cane near the base of the petiole attachment. [3]
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Rubus phoenicolasius (Japanese wineberry, [2] wine raspberry, [3] wineberry or dewberry) is an Asian species of raspberry (Rubus subgenus Idaeobatus) in the rose family, native to China, Japan, and Korea. The species was introduced to Europe and North America as an ornamental plant and for its potential in breeding hybrid raspberries.
Expert technique (after fall pruning): For hybrid teas and floribundas, cut at a 45-degree angle just above an outward-facing leaf node. Remove canes smaller than a pencil and any remaining leaves ...