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Weeping Higan Cherry trees are rather prone to problems, particularly in dry soil. A type of bacterium can cause leaf spots and twig cankers. Small, reddish spots dry and drop out. A fungus can cause reddish spots which drop out leaving shot holes. Once the holes appear the leaves may fall from the tree and the disease is worse in wet weather.
Some trees were sprayed in 1945 at the end of the growing season and some trees were not. All of the trees that were sprayed in the fall of 1945 survived and produced fruit in 1946. Yields for the unsprayed trees that survived were 36 pounds per tree. Sprayed trees yielded nearly three times more than the controls with 107 pounds per tree. [22]
Shot hole disease is a major concern of the stone fruit industry. It is estimated that 80% of the California almond crop may be infested with shot hole disease, resulting in a potential yield loss of 50-75%. [3] In the 1930s, it was found that applications of Bordeaux mixture reduces shot hole disease on peaches from 80% to 9%.
Orange or yellow paints are used for harvest boundaries, and trees within those areas have blue, orange, green, or yellow paint, depending on whether they are to be taken or spared.
The tiny insect larva is attacking black locust trees.
This species blooms in late spring or early summer. The flowers are purple or magenta, rarely rose-pink, about 5 cm (2.0 in) wide. [10] The fruits are yellowish, tubercular like the stems, [10] and shaped something like the frustum of a cone, with a hollow at the wide end where the flower fell off; they are often mistaken for flowers. The plant ...
Pittosporum eugenioides starts out as a small compact tree; as it matures it becomes a tall branched tree. The lemonwood flowers between October and December. The following year, after flowering, the capsules will open. The capsules open the next year because the fruit of the lemonwood takes between 12 and 14 months to ripen.
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