In extreme cases, where temperatures are forecast at -2°C, the ground temperature can reach as low as -7°C and lower in cold pockets, so we will take extra precautions for frost damage.
In these scenarios, it is advisable to double layer the fleece over your plants to make sure no damage occurs. Also, ensure there are no gaps in the fleece, making sure no cold air can get to the plants.
Pinning the fleece in place is advised too, as even a slight gust can move the fleece enough to expose the plants. Rocks and pegs are a great way to keep it in place for the night.
You can also use the fleece as a rain/ hail shield. It is water resistant and can keep your plants dry underneath.
It works much better if dry, so if it does get wet, ensure to dry it again for full frost protection effectiveness.