Chalk

Chalk is another type of limestone that is made up of very small single-celled organisms.

Additional Information

Chalk is usually white or gray in color. Chalky (alkaline) soil occurs in limestone areas, but is also created by the inclusion of builder's rubble in the soil, often around the bases of walls, where clematis thrives. Although gardeners with this soil are fortunate in that lime-loving plants are more numerous than acid-loving plants, chalky (alkaline) dry soil does need compost to increase the nutrient content and water-retaining capacity. Poor soils containing an excessive proportion of clay are frequently improved and sweetened by mixing chalk into them.

Advertisement

Home