BEGONIA, 39 
all to heat. At that time the plants should be fully six 
inches in height, and proportionately strong. Such 
plants will make a grand display the entire season, rather 
delighting in great heat. This was plainly shown the 
past season on Mr. Griffin’s grounds on Long Island, 
where the strong plants, which were first set, grew vig- 
orously, while the younger stock from seed sown too 
late, failed to grow in a satisfactory manner. Those 
intending to grow Tuberous Begonias from seed, should 
sow early in January. The amateur can start the 
tubers in the ordinary window, and grow them on until 
time to plant out, but to grow from seed will require 
the use of a greenhouse. 
Propagation is effected rapidly and easily from seed, 
which is produced freely ; a single capsule is said to con- 
tain more than one thousand seeds, which, with proper 
care, will produce nearly as many plants. The seeds of 
the Tuberous Begonia are so excessively fine as to resem- 
ble tobacco dust more than covers containing the germ 
of a future plant. And it is well to remark, in this 
place, that the seed produced in our greenhouses or in 
the open ground, is much better, both as regards size 
and plumpness, than any we have been able to get from 
England, the supposed paradise of the Tuberous Begonia, 
and the germinating properties are much greater. 
The seed should be sown in the greenhouse in Jan- 
uary, in pans filled with very light soil. A mixture of 
powdered sphagnum, sand, and the finest manure possi- 
ble, thoroughly mixed, is the most suitable. This 
should be pressed firmly down, and the seed scattered 
thinly over the surface. Then wet thoroughly with 
a fine rose, and cover to the depth of one-eighth of an 
inch with the same mixture of soil, or with ground 
sphagnum alone; cover each pan with a pane of glass, 
to prevent evaporation, and give them an even tempera- 
ture of about 70°. This degree of heat is quite suffi- 
