PRACTIGAL ARBORICULT URE 239 
In Iowa there has been considerable progress in Catalpa planting. 
In Nebraska there are quite large plantations at Lincoln, Omaha, Ne- 
braska City, Brownville, Crete and elsewhere, in which the diameter increase, 
one inch per annum, is maintained. 
In Colorado and Utah, under irrigation, the Catalpa is remarkably suc- 
cessful where the elevation does not exceed 6,000 feet. As a general rule, in 
the Rocky Mountain region the broad leaf cottonwood disappears at about 
6,000 feet, and the narrow leaf cottonwood takes its place, and where the cot- 
tonwood monilifera will grow Cata/pa speciosa succeeds, requiring consider- 
ably less water than the cottonwood. 
At Denver there are a large number of excellent Catalpas. In Colorado 
Springs are several very good trees. In the parks at Pueblo and at C.F. & 
I. Co.’s Hospital are quite large specimens. 
There is no place where the prospect is better for growing Catalpa than 
Grand Junction, where numerous trees prove their success. 
As good results have been attained at Provo, Utah, as in any portion of 
the United States. Here are many tall, symmetrical trees, some of which are 
illustrated. 
The Rio Grande Western planted 65,000 trees at Provo in the spring of 
1900. Unfortunately a large portion were bignonoides. The difference in 
vigor is seen, where, under the same treatment, bignonoides are from 4 to 5 
feet high and speciosa 12 to 16 feet and 8 inches girth. 
CALIFORNIA. 
About San Jose and the road leading to Stockton are several good trees. 
Owing to a mistake of the California State University, bignonoides seed and 
trees were distributed instead of speciosa. Much confusion has arisen thereby. 
Speciosa seems to succeed well in California, while bignonioides, wanting 
in vitality, makes a scrub growth, and is much diseased. 
At the asylum at Stockton is a long row of bignonoides, which have been 
supposed to be speciosa. 
In the parks at Los Angeles the same thing occurs—not one speciosa. 
In the lower valleys of New Mexico there are a number of good trees. It 
will be a profitable undertaking for any who will thus supply mining timbers 
to this region, where they are very scarce. 
In the South, where bignonoides is indigenous, speciosa makes a splendid 
showing. The long growing seasons, abundance of moisture and rich soil 
cause it to make rapid growth, not infrequently two inches diameter increase 
per annum. 
CATALPA SPECIOSA IN THE SOUTH. 
LOUISIANA. 
There are several large trees of the Catalpa in and about New Orleans, 
which have made the phenomenal growth of two inches diameter increase each 
