This section is from the book "The Gardener's Monthly And Horticulturist V24", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
A correspondent suggests that when a raspberry is spoken of as "an abundant bearer," it simply means that "there are more berries ripen together than usual." He says that " there are never more than ten flowers on a raspberry branch, and sometimes they ripen nearly altogether, and are over in a few days. In other varieties they ripen in succession over a period of about ten days, and this is all there is in it." We cannot say now that the raspberry season is over, whether this is the case or not; but even if there are but ten flowers, surely some are often abortive.