This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
"The New Rochelle and other blackberries - what are their value, and the best methods of pruning?'
Mr. Barry, being called upon, said the blackberry was easy of culture, productive, and needs a good soil to produce fine fruit, the richer the better. The New Rochelle were good when fully ripe, but preferred the Dorchester for quality, though it was less productive.
S. H. Ainsworth said Mr. Miner, of Honeoye Falls, had grown a seedling-trailing blackberry from seed, which was large, productive, and of excellent quality. In fact, he bad two seedlings of about equal quality, and of the same character, one about ten days earlier than the other. Had been acquainted with this fruit for three years. It is like our wild trailing blackberries, but a vast improvement, and much sweeter than either New Rochelle or Dorchester. Perhaps it was not quite as productive as the former. Berries three-fourths of an inch in diameter, and an inch and a quarter, or more, in length. One of the varieties was apt to form a few imperfect berries, and this was the only drawback.
Mr. Miner, being present, was called upon for facts in regard to his seedling blackberries. He said the flavor was excellent, better than New Rochelle or Dorchester. Thought quite as productive as the former. Had two sorts which he considered good, one ten days earlier; the early variety always had perfect berries; on the late sort a few berries would not be perfect. Had raised thousands of seedling blackberries from the Michigan running blackberry, but obtained only these two that he considered worthy of cultivation. Planted three feet apart one way, and eight the other. Had them in cultivation six years. Will produce at the rate of fifty bushels to the acre. They a make a large growth, some running twenty feet, and always ten or twelve. Cut them back to about six feet, and wind to stakes and fasten. The fruit in this way is on the outside, where it can be easily picked. The new wood is allowed to trail on the ground. Propagated to the tips of the branches, the same as the Black Raspberry. Never knew an inch of the wood to be killed by the winter.
 
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