PLANTS WORTH GROWING 139 
establishing a group or colony is to plant quite 
young seedlings, allowing four to six feet between 
each. The soil should be deeply dug and well 
enriched so that once planted they may remain 
undisturbed. A little protection of the crowns in 
Winter is advisable, and precautions should be 
taken to keep slugs and snails at a distance or 
they may do damage by gnawing the succulent 
crowns just as they are breaking into new growth. 
Periodical mulchings with short manure will keep 
the plants well nourished. 
Erigeron. — The daisy-like flowers of the Erigerons 
are possessed of the beauty of simplicity, and several 
of the species and garden varieties are useful to 
provide patches of colour and flowers for cutting. 
Quite ordinary care suffices to ensure the plant's 
comfort and success in almost any soil and situation 
except where sunlight is absolutely excluded. 
Eryngium. — Here we have another extremely 
useful family of plants producing branching stems 
with Teazle-like flower-heads backed by elegantly 
cut leafy and spiny bracts, and which will either 
maintain an attractive display in the garden for a 
long period, or if cut in their prime and well dried 
will serve the purpose of Winter decorations in 
company with other ' everlastings.' Most of the 
Eryngiums are of the peculiarly lustrous blue that 
we term ' steel ' blue, but E. maritimum is glaucous 
grey, almost white, and E. giganteum is silvery 
white on a sea-green ground. 
