This section is from the book "The Gardener V1", by William Thomson. Also available from Amazon: The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener.
In order to obtain a fine late bloom of these, the shoots must be kept well thinned out. This does not apply to bedding sorts so much as to the show and fancy varieties, which make splendid decorative plants till late into the autumn. The plants also require to be securely staked to withstand September gales; and during this month, should it prove very dry, one soaking of water ought to carry the plants through an ordinary term of drought. Of course this applies in greatest force to deep, well-cultivated soils. Though our soil is an open one, it very rarely happens that water is required for these. Deep trenching in winter saves the summer use of the water-pot.