So far this Autumn has been dry and fairly mild. However, nature and our gardens need the cold, frosty weather over winter.
The garden never sleeps, and all winter there are subtle but vital changes taking place. Under the soil, the cold is working its magic on seeds, bulbs and roots. Even the chill winds have a role to play to ensure flowers and fruits appear later in the year.
Without the winter cold, gardens would be less beautiful in the summer.
A period of cold weather is essential to many plants and crops. Without it, some would struggle to grow at all, while others would not flower or produce crops.
One example of crops that need a cold spell are fruit trees such as apples, plums and pears. If temperatures remain high, these trees would not come into growth in spring, nor produce flower buds. In a process known as vernalisation, the reduction in daylight initially induces the trees to go dormant. They shed their leaves, which would require too much energy to maintain in winter when they make less food. Then the trees must be exposed to a certain number of days with a minimum temperature, usually less than 7°C. Only when this has happened are they ready to burst into growth and bloom when temperatures rise. This process is designed to ensure this happens in spring, and not in autumn.
So when we start to feel chilly outside, just remember- cold weather over winter is good thing!