This section is from the book "The Gardener's Monthly And Horticulturist V28", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
The inquiry of your correspondent of the South, about the flowering of the sweet potato, reminds me of a field I saw in full bloom in the summer of 1884, on the farm of Job Haines in Gloucester County, New Jersey. It was particularly interesting to me, for I had been watching for nearly fifty years, whenever I had the opportunity, without ever seeing one before or since. The seed was purchased from a farmer in the same county, but I was unable to learn where he procured the tubers. Others in the neighborhood had them to flower profusely, but Mr. Haines unfortunately ran out of the plants; and as none of the flowers produced seeds, I presume they have, like former introductions, lost the habit of flowering.
Your remarks about bud variations were well illustrated by a tuber of the red variety, which I received from a neighbor this fall. This tuber was red like the rest of the crop for about one-third of its circumference for its full length, while the other two-thirds was a light clear yellow. This variation could not have been produced by pollen, as even in the rare cases where the plant flowers, I believe it never produces seed. Philadelphia.
 
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