When I am asked this question, my reply is, "Most certainly you may, with the best results."Indeed, there is hardly a plant (probably not one) to which this invaluable manure may not be applied beneficially, if the application is made with proper precaution and at the right time.

To discuss this subject fully would occupy much time and space, but I am desirous of recording a few practical results in direct reply to the question at the head of this article. The information will, I have no doubt, be of use to some readers, because it is yet believed by many that guano is detrimental to Coniferous as well as to numerous other plants.

Two or three years since, a gentleman who is a great lover of Conifers, determined to test the efficacy of guano as a stimulant to various specimens in his grounds. The rate of growth for the summer was carefully noted, as well as that of the following year, when no guano was given. The difference was very marked. Some of the plants assisted by the stimulant pushed shoots more than double the length of those made in the following year, when no guano was applied.

It will possibly be asked, What quantity was given to each plant and when ? The application commenced as soon as vegetation became active, and was continued at intervals until the season's growth was completed, and it was given in a liquid form. To those who are novices in the use of guano, the following hints may be necessary :

Procure an old tub, a tar barrel is as good as anything, throw into it half a dozen pounds of the manure, fill up with water, and stir till the whole is dissolved. In a few days the liquid will have become perfectly clear. Take a portion of it, reduce with soft water to about the color of pale sherry, and it is fit for use. Apply it at intervals of about ten days. After two or three applications, if a plant is thoroughly healthy and vigorous, the manure may be given a little stronger than is recommended above, but take care never to err on the strong side of the question, or the worst results may follow; rather apply often and much diluted than give it too strong. I have seen vigorous plants, other than Conifers, killed by too strong a dose. Used judiciously, it is an invaluable assistant to the gardener, but, like all powerful agents, it requires to be used with caution.

I may mention a circumstance in which the frequent application of soap suds to a Deodar greatly accelerated its growth. The tree alluded to stood on a lawn in front of a gentleman's dressing-room window, and was one of several similar in size, planted at the same time. To the one in question, the owner, at frequent intervals during the spring and summer, was wont to carry the contents of his washing-basin, at first without any idea of accelerating its growth ; but after the first year, witnessing the beautiful effect of the application, he followed it up designedly. From thus constantly attending to and watching the growth of the tree, he became, as he assured me, quite attached to it, and never failed to point it out to his friends as the greatest favorite in his garden. It was worthy of all his admiration and attachment. G. L., in London Florist.