20 



EUCALYPTS IN FLORIDA. 



fully, though the temperature there frequently falls as low as 20° F. 

 According to Sahut it is a species well adapted to dry situations. 



Table 8. — Eucalyptus gunnii in Florida. 





Age. 



Height. 



Diameter 

 breast- 

 high. 



Average annual 

 growth. 



Killed 



back by 



frost. 



Mini- 

 mum 

 tempera- 

 ture. 





Location. 



Height. 



Diameter 

 breast- 

 high. 



Soil. 



Avon Park 



Years. 

 9 



Feet. 

 62 



Inches. 

 22.4 



Feet. 

 (3.9 



Inches. 

 2.5 



No 



°F. 

 20-22 



Sand, 15 to 20 feet 

 deep. 



EUCALYPTUS MARGIN ATA SMITH (jARRAH). 



Only three specimens of Jarrah were found in Florida. These 

 were at Eustis, Fort Myers, and Estero. At Eustis the specimen was 

 killed back by frost, which shows that it is not frost-resistant. The 

 stump, however, has thrown out sprouts which make a good growth. 

 At Estero and Fort Myers the trees apparently did not suffer from 

 frost. No specimens were found in the intervening areas between 

 Eustis and Fort Myers and Estero, and therefore the northern limit 

 of the species in Florida can not be determined with certainty. It 

 is safe, however, to assume that this species is adapted only to those 

 portions of Florida where the temperature rarely falls below 24° or 

 25° F. for any continuous period, since it is chiefly a tree of the 

 Tropics, and in its native habitat the minimum temperature does not 

 fall below 27° F. (See PL II, fig. 1.) 



Its planting in Florida is of especial interest, since nowhere in the 

 United States has it so far given any satisfactory results. It is pos- 

 sible that this tree may find a more congenial home in Florida than 

 in the Southwest, where the climate is more arid. It should not be 

 planted in dry soils, but in fresh or even moist soils, provided they 

 are well drained. 



Table 9. — Eucalyptus marginata in Florida. 





Age. 



Height. 



Diameter 

 breast- 

 high. 



Average annual 

 growth. 



Killed 



back by 



frost. 



Temper- 

 ature. 





Location. 



Height. 



Diameter 

 breast- 

 high. 



Soil. 





Years. 

 3 



(?)13 



Feet. 



8 



54 



42 



Inches. 

 1.5 



8.3 

 8.0 



Feet. 



2.7 



4.2 



Inches. 

 0.5 



.0 



No 





Very poor, with 



Fort Myers. 1... 



No 





rocks close to sur- 

 face. 

 Hardpan. 



Yes, but 

 not re- 

 cently. 





Sandy, good. 















