Winter protection for Echium

QuestionsWinter protection for Echium
Ilsa Thielan Staff asked 11 years ago

I have an Echium of about 1.20 metres in my garden which shall flower next year. How canI protect it from frost? It will only tolerate up to minus 3 Celsius as I read in one of my books. I heaped some earth around its base and popped a huge plastic bag over it as minus 5 are forecasted for tonight. Oh fright! Would a horticultural fleece do a better job or even bubble wrap?