. Roses, and how to grow them; a manual for growing roses in the garden and under glass ... of the disease in springdepends entirely on the presence of winterspores in the neighbourhood. It is thereforenecessary to collect and burn all fallen leavesin the autumn. Plants that have been at-tacked the previous season should be thor-oughly drenched with a solution of sulphateof copper in water — two ounces in threegallons—in early spring before the budsexpand. The soil around the plants mayalso be sprayed with the same Bordeaux mixture, or ammoniatedcarbonate of copper solution, c
. Roses, and how to grow them; a manual for growing roses in the garden and under glass ... of the disease in springdepends entirely on the presence of winterspores in the neighbourhood. It is thereforenecessary to collect and burn all fallen leavesin the autumn. Plants that have been at-tacked the previous season should be thor-oughly drenched with a solution of sulphateof copper in water — two ounces in threegallons—in early spring before the budsexpand. The soil around the plants mayalso be sprayed with the same Bordeaux mixture, or ammoniatedcarbonate of copper solution, checks theaecidium and uredo stages. The fungus also grows on wild roses, andthese may become a source of infection unlessprecautions are taken. When a shrub is badly infested there islittle better to do than cut the whole plantaway close to the ground. This fungus isclosely related to (he one upon the blackberryand raspberry, causing the destructive rustof those plants. It has been shown that thefungous hyphae penetrate all parts of theblackberry plant, even the roots, and the rose. STANDARD ROSES IN A FAMOUS GARDEN AT SARATOGA, N. roses are popular in England, but they do poorly in America, needing tobe buried in a trench for winter protection. They are effective in the formal rose gardenbecause they break the monotony of a uniformly low level INSECTS, DISEASES AND SPRAYING 6l grower may not find that severe pruning willrid a plant of the pest when it is thoroughlyinfested. Therefore, as with the raspberryrust, it may be necessary to root out anddestroy the rose bush and start again with ahealthy plant. This rose rust is a good illus-tration of the great depth to which a funguswill penetrate in the host and the difficultyof eradicating the same. It goes withoutsaying that ordinary sprays will be of littlecurative effect upon a plant when the livingvegetative threads of its fungous parasitepenetrate to all parts. In California the rust upon roses is verymuch wors
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