70 COLCIIICUM, CYCLAMEN, AND DOUBLE DAHLIA. 



and when they ai-e, which may be about every third year, they 

 ought not to be retained too long out of the ground before 

 they are rej^lanted. 



COLCHICUM. 



This curious Uttle bulb, being planted in the month of 

 June, about two inches deep, produces its flowers in Octo- 

 ber ; it then dies, without leaving any external appetirance 

 of seed ; they, however, lie buried in the bulb all the winter, 

 and in the spring produce a stalk with seed, which get ripe by 

 the first of June, just in time to plant for flowering in the ensu- 

 ing autumn. How wonderful are the provisions of Nature ! 



CYCLAMEN. 



There are several species of the Persian Cyclamen which 

 are worthy of cultivation in pots ; the varieties Coum and 

 Persicum will bloom in a green-house, or warm room, from 

 January to April, if planted in good light compost early in 

 September. The foliage of these plants is of a dark green 

 velvet colour; and the flowers of the variety Coum are of a 

 dark crimson colour ; those of the variety Persicum are of a 

 delicate French white, tipped with pink, and their fragrance 

 is similar to that of the wild rose. 



DOUBLE DAHLIA. 



This may with propriety be denominated one of the most 

 important perennial tuberous-rooted plants that can be intro- 

 duced into a garden, and from the circumstance of its having 

 become so fashionable of late years, I have felt anxious to 

 furnish in this woi k a catalogue of all the choicest varieties 

 attainable ; I therefore applied for this purpose to Mr. G. C. 

 Thorburn, who, from a regular correspondence with connois- 



