How to grow good roses ?

To grow good roses it is necessary to cultivate, to prune
and to spray. If you have a well-cultivated bed you need not
worry about watering. But if you start to water in hot
weather, you must keep it up, soaking the roots thoroughly
about once a week.

Spraying every 10 days guards against the diseases and
insects that attack roses. Nicotine sulphate wipes out the
green lice; arsenate of lead is used against chewing
insects; or sulphur and arsenate of lead may be used in a
dust, as may DDT dust.