Our clay soils are almost void of humus or organic matter and are poorly drained and aerated. You will have to overcome these characteristics by thoroughly spading, plowing or rototilling the flower beds and adding 3 inches or more of peat moss, pine bark, or leaf mold along with one inch of coarse sand. The fertilizer should be carefully spread over the soil surface near the plant and very carefully and thoroughly watered into the soil. After the plants have become established, water thoroughly once per week with sufficient water to moisten the soil down to a depth of 8 inches. Fertilize after the plants are planted in the pots or boxes.
Begonias come in a wide range of flower color, and bronze or green foliage.
Flowers may be pink, red, white, single to semi-double and very free flowering. For more information on begonias as pot or garden plants, contact your local county Extension office.