Diagram 50. - Top-dressing: 1. Space left for top-dressing tomato twice. 2. A zinc collar (a) put round top to admit of top-dressing. 3. The same idea carried out by the making a mound of clay (b) over the rim. 4. Bottom dressing. Turves (c) set beneath a pot plant for the escaping roots to feed upom. 5. A box of soil (d) set beneath for the same purpose. 6. Some soil taken away from old cyclamen and fresh put in its place (e).
The Garden Under Glass - 1914