What Materias Can Be in a Dahlia Mulch?
The type of insecticide used is not so important. There are many very good proprietary brands on the market, and this important subject will be dealt with more fully later on, but it is as well to use a brand that will give a measure of protection against both the biting and the sucking insects. A mixture of D.D.T. and Gammexane (Gamma B.H.C.) as a spray or dust seems to give better results than most other insecticides, as a matter of fact.