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.
Mr. Perry writes as follows : " The old Catalpa tree " is probably C. bignonoides. "Catalpa speciosa planted two years ago made rampant growth last year - four to five feet. A little tip of unripe wood, two to three inches killed, wood bright and full of sap from the first fully developed bud.
To my mind it is hardier than the Golden Russet Apple trees. I think you can safely say it is hardy south of 44° or 45°. My old Catalpa bore a few seed pods last year. I picked them off Saturday, 2Gth. They were from six to sixteen inches long, and contained a winged wafer-like seed; find a few enclosed. I never saw the fruit or seed of a Catalpa before this, so cannot tell whether they are perfect or not".