Don't be alarmed if some of your plants in pots had frozen root balls they will come back.
I have some rather lovely hellebores in pots, which last week suffered as it just wasn't thawing during the day, and were very floppy! i placed then in the sun and over the weekend the temperatures rose and hey presto back to normal.
The other option is keep in a cold cover or Green house.
Mulch, Mulch, Mulch.....
Don't forget to put some plants to bed with a decent mulch, this can be anything from compost to leaf mulch to chipped bark whatever you prefer just watch out for anything too acidic if your soil is not this type (like any fir or pine chipping), plants and soil will benefit and don't forget if you have some to throw some feed around the beds, it will take the nutrition and be happy and alert in spring.
It's free kind of....
....Don't throw away fruit and vegetable containers as these are ideal for sowing seeds, also good are toilet roll tubes for sweet peas, because they do not like being disturbed with the roots these work really well with the length and can be planted them as well because they will rot down quite quickly once in the ground.
I have been given by my mum a remedy for keeping slugs off my Hosta's so I will share with you all, this was tested last year and worked so give it a go.
2 Large garlic bulbs, crushed
2 pints of water
To Make: Boil together until garlic blanches, cool and strain then add water to make up 2 pints. Store in screw top container such as a jam jar. (remember to label - slugs only)
To use: Dilute 1 tbsp of mix to 1 gallon of water. Use a watering can with a rose to wash the leaves in late afternoon. Repeat every 14 days. (this only works once leaves are open so crushed stone/grit is good on the pot or covering the crown to stop slugs crawling over the new leaves)
Good Luck gardeners