46 HOW TO MAKE SCHOOL GARDENS 
It then grows rapidly. As the stems and 
leaves are so fleshy, the plant will often 
mature its seed even after pulled up. It 
easily roots at the joints. The small 
yellow flowers open only in sunlight and 
remain open but a few hours. The seed 
has very great vitality, being able to 
, remain in soil many years and then grow 
when an opportunity comes. The plant 
is used in salads, for greens (as a pot herb), 
in pickles and for garnishing. It is very 
good. It is often called pussley. Difficult 
to kill, it should be uprooted and removed. 
Best time to kill it is when it is a day or 
two old, by hoeing it up. 
