Archive image from page 40 of The culture of pot-plants in. The culture of pot-plants in rooms, greenhouses, & frames cultureofpotplan00davi Year: greenhouses ( ANNUALS AS POT-PLANTS 29 If annuals are to yield a succession of flowers, the seed should be sown at intervals from the beginning of March to about the end of August. The soil at the top should be fine, smooth, and firm, but not hard. The roots of young seedlings cannot penetrate hard soil, and unless they are able to do so the plants will be stunted. Hence the import- ance of sharp sand to render the whole porous. If, however, Fig
Archive image from page 40 of The culture of pot-plants in. The culture of pot-plants in rooms, greenhouses, & frames cultureofpotplan00davi Year: greenhouses ( ANNUALS AS POT-PLANTS 29 If annuals are to yield a succession of flowers, the seed should be sown at intervals from the beginning of March to about the end of August. The soil at the top should be fine, smooth, and firm, but not hard. The roots of young seedlings cannot penetrate hard soil, and unless they are able to do so the plants will be stunted. Hence the import- ance of sharp sand to render the whole porous. If, however, Fig. 12.—Pot containing Seed sunk in a larger one partly filled with moss, which can easily be kept moist. the soil is not firm—if it is soft and spongy—it holds an excessive amount of moisture; and even when the plants escape serious injury, they make soft and sappy growth which is unfavourable to the production of flowers. Five or six seeds may be sown in a 3-in. pot (the measurement being the diameter at the top), and just covered with soil, which should be pressed down gently and then watered through a fine rose. A piece of glass should be laid over each pot in order to check evaporation, and on it, to exclude the light, some brown paper. It is the worst possible thing to keep on saturating soil which does not contain growing vegetation ;
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