If there isn't any frost forecast then I wouldn't worry about anything thats very hardy like in the examples.
I have some foxgloves in my greenhouse because I grew to many and it's the easiest place to keep them that's not in the way. The ones I planted last year are much happier outside and twice the size but if I was going to plant any of these molly coddled greenhouse foxgloves, I'd still acclimate them a little to the outside temperatures by popping them next to the house walls. Do they need it? probably not but it's also not hard to do and why risk it.
I don't know what the local supermarket is like for looking after plants but ours are all terrible so I don't think a little extra tlc offered to the plants is a bad thing. Here they get watered before the reach the shop and you have to buy them before they dry up. We get houseplants dumped outside the shop even when there is snow on the ground.
It really all depends on how much soft growth the plant has made due to low light levels and heat indoors. I would expect hardy plants like hellebores and foxgloves to lose the soft growth soon after being put out at this time of year. They’d suffer but probably survive and make a comeback although because the foxglove is a biennial I wouldn’t expect it to flourish quite like one that had been cared for properly. ie kept outside.
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I have some foxgloves in my greenhouse because I grew to many and it's the easiest place to keep them that's not in the way. The ones I planted last year are much happier outside and twice the size but if I was going to plant any of these molly coddled greenhouse foxgloves, I'd still acclimate them a little to the outside temperatures by popping them next to the house walls. Do they need it? probably not but it's also not hard to do and why risk it.
I don't know what the local supermarket is like for looking after plants but ours are all terrible so I don't think a little extra tlc offered to the plants is a bad thing. Here they get watered before the reach the shop and you have to buy them before they dry up. We get houseplants dumped outside the shop even when there is snow on the ground.
Never inside.
“It's still magic even if you know how it's done.”