92 Alpine Plants. 
“sandwich-fashion,” first placing a bottom stone, 
then putting a portion of the prepared compost 
upon it, next laying on the plant and taking care 
that plenty of room shall be left for the root to 
go down as it grows, since the plant forms a 
tap-root, and finally adding a little more compost 
about and upon the plant before placing a last 
stone above and making the whole as firm and 
tight as possible without injury to the roots or 
crowns of the plant. In spring the plant should 
be well looked after lest slugs eat all the crowns 
away, for if slugs get at the plant they will be 
sure to eat out the centre crowns, and so only a 
few leaves will appear the following year. In 
spring and again in autumn, top-dress with fine 
broken limestone, letting it run right in between 
the stones. 
Phyteuma Scheuchzeri (Alps). 
Requires the same treatment as Phyteuma 
comosum. 
Phyteuma: Other species. 
Most of the other species will do in ordinary 
loam and sand. 
Polemonium confertum and c. mellitum (Rocky Mountains, etc.). 
A handsome little plant, worth growing on the 
rockery and requiring a well-drained place, with 
a south-west aspect, in good loam, leaf-mould, and 
sand. This plant should be divided every second 
or third year and given a fresh place, otherwise it 
will die out. 
