The frequency of changing soil in pots depends on various factors, such as the type of plants, soil quality, and environmental conditions. Generally, it's advisable to refresh potting soil annually or biennially to maintain optimal plant health. Over time, soil in containers can become compacted, depleted of nutrients, and prone to pests and diseases.

For fast-growing or heavy-feeding plants, more frequent soil changes may be necessary. Signs that it's time to change the soil include poor drainage, the emergence of mold or fungus, stunted plant growth, or the depletion of nutrients resulting in yellowing leaves. Regularly monitoring the moisture content, texture, and overall health of the soil can guide you in determining when it needs replacement.

When changing the soil, remove the old soil, inspect the roots for any signs of disease or rot, and add fresh, high-quality potting mix. Additionally, incorporating organic matter like compost during soil replacement can enhance fertility and structure. Proper watering practices, such as avoiding over watering and allowing the soil to dry between watering sessions, can also contribute to the longevity of potting soil. Adjusting the frequency of soil changes based on plant needs and observing the condition of the soil will help ensure thriving plants in container gardens.