PLANTING 49 
thinly over a few feet of space than if merely planted 
in one solid block. Those plants that have rhizo- 
matous or stoloniferous stems, that is stems that 
run over the surface of the ground and root into 
it, should be spread out in their natural position, 
not thrust in perpendicularly and buried deeply. 
Irises of the Germanica section are good examples 
of rhizomatous plants, and the Acaenas, Teucrium 
and Nepeta glechoma are of stoloniferous char- 
acter. 
Many plants have underground stems that ramify 
just below the surface, instances being found in 
Physalis, Helianthus rigidus, Baptisia Australis, 
and Polygonums of various sorts. These also 
should be planted in such a manner that they start 
in their natural position instead of having to struggle 
to regain it. 
A few subjects, chiefly among tuberous and 
bulbous plants, require very deep planting, Fritil- 
larias, Alstroemerias, Asphodelus, and a few of the 
Anemones never thrive when covered with only a 
shallow coating of earth, but when planting deeply 
one must see that the situation is well drained, and 
that nourishment is provided well under the roots. 
Mention of nourishment prompts us to urge that 
manure should never be placed in the holes to come 
into immediate contact with the roots. It is not 
until well established that plants can benefit, but 
even then roots do not absorb from solid masses 
of manure, but are nourished by the soluble chemicals 
