This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
As these advance to bloom, let them receive copious supplies of water. To flower well, the pots should now be filled with roots. Neglect in watering will therefore injure the flowers. The scarlet sorts are seldom bloomed well in the greenhouse. I lately saw some with large trusses containing upwards of 150 blooms. To produce such magnificent blooms the shoots are pinched close down to the flower stem.
We present, as a frontispiece this month, portraits of three new Pelargoniums, taken from Turner's Florist. They are of the spotted varieties, and present an outline that is nearly perfect. The colors are very fine. The Pelargonium has of late been too much overlooked, even by growers of specimen plants; and as a specimen or show plant there are few that surpass it. It is much to be regretted that old and deserved favorites should be neglected, even temporarily, for new comers, no matter what their merits. We know, however, that the old ones will at some time re-establish their claims to admiration, and reproach us for our neglect. Let us, therefore, while welcoming a new candidate for favor, not forget the old that we know and have learned to love.
Show and fancy Pelargoniums will now commence flowering, and will require abundance of water; a little guano water after the buds are formed is useful; do not use it earlier - the plants produce more foliage than flowers. These plants are not so fine in this country as in England; the weather is too hot and the sun too bright for the flower to last any length of time; for this reason it is desirable to grow the early flowering varieties; a good addition to these is Gloire de Paris; the fancy varieties are not much grown in this country, probably from the fact that the plants import badly, and also suffer much from the hot weather; but they will stand a much higher temperature during winter without getting drawn; then the show varieties and the plants are much neater, and when in full flower are very beautiful, even in small plants; but when grown as seen at the London exhibition, in May and June, with a level top from three to four feet in diameter, and such a mass of flowers that not a leaf is visible, they arc magnificent; and it must be remembered these large plants are grown in eight-inch pots.
If not shaken out already, should be done at once, and repotted into smaller pots. Give them a good light place and plenty of air to get the plants well established before winter.
Ferns and Selaginellas should be looked over to see that scale and thrip have not become established, and should be destroyed at once by careful cleaning. These plants are very useful at all seasons of the year, both to mix with flowering plants and also for cutting to mix with cut flowers. A nicely filled fern case is one of the best ornaments for a sitting room, and requires much less attention than growing plants in general.