5 YEAR GUARANTEE 
Preparing to Lift Dahlia Tubers
As the seasons shift and temperatures drop, it’s important to monitor your dahlias for the first signs of frost, as this marks the right time to begin lifting the tubers. Before starting, gather the necessary tools such as a garden fork, spade, and pruning shears. Trim the stems down to around 15cm (6 inches) above soil level to make handling the plant easier and to concentrate energy within the tubers. Choose a dry day for the task, as working in wet conditions can make the process more difficult and increase the risk of damage to the tubers. Ensure the surrounding area is clear of weeds or debris to create a tidy workspace. This makes the process more straightforward and reduces the chances of introducing disease. If the ground is particularly compacted, take care when loosening the soil to minimise the risk of injuring the tubers. These initial preparations help set the stage for successful lifting and storage, ensuring your dahlias thrive in the coming season.
Steps to Carefully Lift Tubers
Using a garden fork or spade, begin loosening the soil around the plant, working methodically and keeping a safe distance from the main stem to avoid damaging the tubers. Gradually move closer to the base as the surrounding soil becomes loose. With care, lift the clump of tubers from the ground, ensuring the entire clump is supported to prevent individual tubers from snapping or breaking. Avoid pulling directly on the stem, as this can strain the tubers and lead to damage. Handle the tubers gently, as their skin is delicate and can be easily harmed. After lifting, take a moment to remove any large clumps of soil by lightly shaking the tubers. This will make the subsequent cleaning process easier. Be mindful of the weight of the clump, especially if the soil is damp, to avoid straining or accidentally dropping it. Such care ensures the tubers remain intact and in optimal condition for the next steps in their preparation.
Cleaning and Inspecting Tubers
After lifting the tubers, gently shake off any loose soil and wash away the remaining dirt using a hose or soft brush. Take care not to scrub too vigorously, as the skin is delicate and can be easily damaged. Examine each tuber carefully for signs of injury, such as soft spots, cracks, or areas of discolouration. Check for mould or signs of disease, as these can compromise the tuber’s ability to survive storage. Damaged or unhealthy tubers should be removed at this stage to prevent potential problems later. Use clean tools if any cutting or trimming is required, and work in a well-lit area to ensure no issues are overlooked.
Drying Tubers Properly
After cleaning, place the tubers in a single layer on a clean, dry surface to begin the drying process. Choose a cool, shaded spot away from direct sunlight, as excessive heat or light can harm the tubers. Use an area with good air circulation to promote even drying and minimise the risk of moisture build-up. Avoid stacking the tubers or placing them in enclosed containers at this stage, as restricted airflow can encourage mould or rot. If any cuts or nicks are present, ensure these are exposed to air, allowing them to callous over and provide a natural barrier against potential infections. Check the tubers periodically during this time, gently turning them to ensure all sides dry evenly. Be careful not to handle them too roughly to avoid causing unnecessary damage.
Storing Tubers Over Winter
To prepare your tubers for winter storage, choose a location that offers consistent cool temperatures and protection from frost. Lay the tubers in a single layer to prevent them from pressing against one another, which can lead to bruising or rot. Surround them with a moisture-absorbing material, such as peat moss, dry sand, or sawdust, to maintain a stable environment. It’s important to ensure the material remains dry to avoid excessive humidity, which could encourage mould. Avoid using sealed containers, as tubers require proper ventilation to stay healthy. Position the storage area away from heaters or sources of excessive warmth, as fluctuating temperatures can negatively impact their dormancy.
Checking Tubers During Winter
Throughout the winter, it’s essential to keep an eye on your stored tubers to ensure they remain in the best condition. During your checks, pay close attention to any changes in appearance or texture that might indicate potential problems. Look for signs of rot, such as soft or discoloured areas, and inspect for mould or any unusual odours that may suggest excess moisture. If any tubers appear affected, remove them promptly to prevent the issue from spreading to others.
Monitor the packing material regularly to ensure it remains dry and free of damp spots. If you detect excessive humidity, replace the material with fresh, dry packing to maintain the ideal storage environment. Good ventilation is vital, so take care that the tubers are not overcrowded or placed in containers that restrict airflow.
Occasionally adjust the position of the tubers to prevent any that may be in contact for too long from developing bruising or damage. While doing so, be gentle to avoid causing harm, as they are still fragile even during dormancy. If you notice early signs of sprouting, it may be worth lowering the temperature slightly in your storage area to delay further growth, as this can impact their readiness for planting later.
Maintaining consistent conditions is key, so check for any drafts or fluctuations in temperature, and make any necessary adjustments. Sudden changes in the environment can disturb the tubers’ dormancy and lead to unwanted issues. By staying attentive and making small corrections as needed, you can ensure your tubers stay healthy and viable for the upcoming planting season.
