Most annual flowers prefer moist, well-drained soils. These plants have a very limited root system and require consistent soil moisture to survive. Roots need oxygen in order to survive and grow. If soil becomes too compacted or too wet, roots will die from lack of oxygen.
University of Georgia Cooperative Extension said soil amendments for clay soil should ideally help loosen compacted soil, improve soil drainage and increase soil porosity. Soil conditioners or soil amendments are not the same as potting soils, which are often blended with materials like peat moss and vermiculite that help retain moisture. Clay already holds plenty of moisture and has the highest water holding capacity of any soil in the world.
University of Georgia Cooperative Extension said soil amendments for clay soil should ideally help loosen compacted soil, improve soil drainage and increase soil porosity. Soil conditioners or soil amendments are not the same as potting soils, which are often blended with materials like peat moss and vermiculite that help retain moisture. Clay already holds plenty of moisture and has the highest water holding capacity of any soil in the world.
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| Most annual flowers like petunias prefer moist, well-drained soils. Adding soil amendments to the soil can ensure the plants receive consistent soil moisture. Photo by Amanda Tedrow |
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