The Giant rhubarb is very big so think about the space you have before planting it. It’s very hardy, likes the sun but can withstand the winter freeze down to -5%. Schedule 3 of the EU (Birds and Natural Habitats) Regulations 2011 in the Republic of Ireland as an invasive non-native species. This won’t stop you buying it if you're from there but you should take care of any garden waste it produces properly.