The Magic of Compost for Successful Flower Gardening

If your soil is extremely acid, which can happen in an area with heavy rainfall, or with soil that has had overdoses of chemical N-P-K fertilizer, you may need to add limestone to ‘sweeten’ the soil.
Adding compost can also work wonders if your soil is out of the ideal pH range. This technique will also improve soil that is too sandy, has too much clay, or is low in the organic material that plants need to thrive. If you don’t know much about composting, don’t worry. You can find more information on composting at the Compost Guide.
Soil drainage is also critical to flower gardening. Mixing in compost is the best way to improve drainage. You can also try digging out a good quantity of the soil, around 16 inches deep, and placing a layer of fine gravel at the bottom.