What is the best method to protect a plant from frost?

You can buy fleece at any Garden Centre - but use it double. I wrap it round and then clip it together with clothes pegs! If it's a really hard frost, then packing straw around the plant before wrapping it with fleece should be enough protection.

You do need to give the plant some air on milder days - don't leave it trussed up throughout the winter.

What variety is the Isotoma?.. if its 'blue star' then i think its frost hardy and a mulch would do it...You could also take cuttings to be on the safe side'....:>)

thank you Spritzhenry and motinot for your replies