hello, having bought quite a few new herbaceous perennials in January which have been kept in an unheated greenhouse since then, although i have been trying to harden them off over last few weeks, was hoping to plant them out over this weekend but as the forecast is for more wintry weather i'm not sure what to do now.
i bought them to try and encourage more bees and butterflies but i think i'm fighting a losing battle !!!
i've got two Buddleia, Achilleas, Geraniums ,Asters, and Globe Thistle, as well as others that i've ordered online.
Does anyone have any advice as to when i should plant these out ????