84 
MARICA SABINA. 
sets, dig up the tubers as soon as the leaves of the plant turn yellow in summer. 
As soon as they are taken up, and sufficiently divided, plant them immediately ; for 
if dried in any degree, they receive injury. The depth at which they are to be 
planted should be six inches. 
The reticulata , susiana , &c., require a light soil, but it should be made rich. 
The former of these needs the shelter of a pit, or frame, in winter. It is usually 
increased by off-sets, but occasionally ripens seed, if the plant be protected from wet, 
and freely exposed to pure air when in flower. The latter may be planted in a 
somewhat stronger £oil than the other, in a situation exposed to the full blaze of the 
sun, and where the air is pure. Moisture is particularly injurious to this species, 
often proving fatal. In a very wet or severe season the roots often perish. It is 
advisable to keep a few in pots, either in a frame or the green-house, during winter. 
The mode of propagation is, by cutting off pieces of the roots, for it very seldom 
ripens any seeds. The amcena, sambucina , ochroleuca, & c. &c., thrive best 
when planted in a good rich loam : the sambucina is calculated for a shrubbery 
rather than small flower borders. All the aforementioned three, in connexion with 
Virginica , Jlavissima, spuria , and several others, require planting in a moist 
situation, or they do not grow to any degree of perfection. The cristata also 
thrives best in a moist situation, but it must be planted in bog earth (not peat) ; 
and if covered with a hand-glass, or some other kind of covering, in severe weather, 
it will do well. The Chinensis has a complete creeping root ; it flowers well in the 
green-house, and does very well in the open border. The clandestina requires the 
heat of the stove, and should be potted in sandy loam and peat. The best for 
forcing are Susiana , Persica , and Chinensis. 
All the tuberous rooted species are propagated by dividing the roots, for the 
most part in the autumn, and the bulbous species by off-sets. 
