76 PICTORIAL PRACTICAL ROSE GROWING. 
If there is abundance of strong young wood, and plenty of 
room for it to grow and ripen, the flowered side shoots on the 
ripe wood may be cut clean out; but if there is any deficiency 
they may be spurred back to two or three eyes, in order to secure 
fresh flowering growths from the same cane. 
Unless young, ripe, flowering canes are scarce, it is not 
advisable to bloom a mature cane more than twice, and it is 
particularly necessary to guard against a tree becoming a 
thicket of old, gnarled, barkbound wood. 
The pruning of pot Roses will be dealt with in a special 
chapter on pot Roses. 
Chapter 10.—The Enemies of Roses. 
Ir would add to the comfort of the Rose grower if he could 
feel that, having well performed his duty in the planting and 
(References to Fig. 36, page 77.) 
PICTORIAL PRACTICE.—PLAIN HINTS IN FEW WORDS. 
FIG. 36—ATTACKS OF CATERPILLARS AND GRUBS ON ROSES. 
A, growth completely fastened together by the threads and overspread by the 
web of the caterpillars from which develops the Small Ermine Moth, 
Hyponomeuta padella, as found on the Dog Rose in spring, two-thirds 
natural size: a, web, forming a so-called web-nest in which the cater- 
pillars lurk and eat, destroying the young growths, then migrating to 
other shoots, and so on until full fed; 4, caterpillar, a great number of 
which passed out of the web-nest while being sketched. 
B, an attack by caterpillars that live between leaflets united by threads of 
silk, and when disturbed let themselves to the ground by a silken cord. 
They often fold the leaves over the flower bud and injure, if not destroy, 
it. Amongst these enemies are the caterpillars of the Geometer Moth, 
Cidaria fulvata; and the Winter Mcth, Cheimatobia brumata, also many 
species of Tortricina, such as Lozotoenia Rosana, Croesia Bergmanniana, 
and Peronea variegana: ¢, leaves folded over the bud; d, infested flower — 
bud; e, folded leaflet ; f, suspended caterpillar. 
C, a leaf infested by Rose Slugs, the larve of the Rose Slug Sawfly, — 
Eriocampa Rosz: g, Rose Slugs; h, patches where the upper skin of the 
leaflet has been eaten away, the affected leaves turning brown, and the 
whole tree, in bad cases, having a scorched appearance. 
D, an attack by the Rose Leaf Sawfly, Hylotoma Rose: 4, caterpillar undis- 
turbed; 7, attitude of caterpillars when disturbed. } 
E, an attack by the caterpillars of the Sawflies Blennocampa pusilla and 
Emphytus cinctus: 4. the work of Blennocampa pusilla, the larvae 
4 
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