This is not a good time to plant anything, Guest, because of the reason that you have given. Wait until the end of the month, at least.

Sorry to dissent, Bulbaholic! Depends where you live really, but as long as the plants have been hardened off (i.e., not kept inside for a while and planted straight out, but acclimatised gradually to outdoor temperatures by putting them out during the day, extending the time until they're out all night as well, usually over a week or two) I'd definitely plant them now. In fact, I planted some last week and they're fine.

But are you still getting frosts at night Bamboo? Guest says he/she is I'd wait until the frost was past

Sure are, sadly - no higher than 5 deg C all day today.

I had potted some up 2 weeks ago and since then we have had quite hard frosts at night but warmish during the day. but they look ok. as they are being treated as bedding it wont matter too much.

I give up... you guys believe one thing and I believe another. Guest this is the problem with a site like GoY you simply get opinions. At the end of the day you have to decide, shall I plant them or not... Good luck and let us know what happens

I dont tend to plant in frosts MG as the advice from you are BA are correct but sometimes a girl has to do........

Yup I know SBG

The only thing that might happen if you plant them out now, and they're in flower, is the flowers might get nipped by the frost, if they're in a very open position. However, since these plants usually prefer a shady spot (which usually means sheltered too) I haven't had a problem with the ones I put out last week, even though they're in flower. As long as they've been hardened off, they won't die because of the frost, but the flowers, as I said, might be nipped - but they'll be back! I hadn't got the room to have them hanging around any longer, that's why I planted them. I hope that clarifies things a bit.

As we don't have anything remotely resembling a 'bedding plant' I can't comment and we would not treat a primula as such.

Why not enjoy your plants in the pots until after the frosts have passed. Keep them near the house or under cover overnight if you bought from inside a shop, that will harden them off. When the frost and flowers are past take them out of the pot, pull the roots apart to give you more plants,cut the leaves down to 1" and the roots to 2" and plant where you want them to flower next year. If you do not have room to plant them in that way put them in a pot and put them out of the way until it is time to replant in the autumn. I bought some primroses at our local garden centre when they were selling them off two weeks ago. I got six plants for £1.00, reduced from £3.99. They had been outside, not watered enough and were looking very sad. I planted them immediately and am reaping the benefit of the rejuvenated plants. I have them in a bed under a pergola which is not affected by the frost as much as an open bed would be.