By Pdb
Lancashire,
United Kingdom 
I've had these Echinacea Primadonna as plug plants since autumn. They have been in my greenhouse until a week ago when I decided to put them outside to harden off. I've just re potted them. Shall I just leave them outside now all day and night? I have other Echinacea growing in my garden and they are coming through now. Thank you
4 May, 2013
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leave them out unless frost is forecast or the sky is cloud free at about 9pm. they are a bit too small yet to be left out on very cold nights.
4 May, 2013