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I have just potted up some beautiful bushy dianthus plugs. Where should I keep them . Would they be ok in a mini greenhouse covered by fleece if a frost is forecast or should I keep them indoors?
They should be fine in the mini-greenhouse as they are hardy.
You're in Lewes aren't you, so relatively mild-ish compared with some parts of the UK - I think I'd put them in the mini-greenhouse if they were mine, as you say protecting with fleece in the worst weather, although a cold greenhouse would be even better.
I don't like taking hardy plants into the house to overwinter if I can help it - it promotes soft etiolated growth and as you say they're beautiful and bushy now, you don't want to get them all thin and drawn.
Thank you all.
Dovefromabove- I'm in Newhaven on the coast so yes it is mild compared with much of the uk. I don't have a green house, my 'garden' is much too small. Lilygirl it is also all paved so I can't get soil unless I buy it in bags.
When you do come to repot them in bigger pots in Spring then all you need to do is to mix 5mm. grit in with a soil based compost, about half and half. That would give them the good drainage and pooer soil they like. If you could get hold of the small grit they use on roads that would be perfect. It is limestone and Dianthus love limestone.
Thank you all for your suggestions.