If I plant perennial "plug plants" in spring, can I expect them to flower
this year?

Same question for those "crowns" that come in sealed plastic bags at the DIY
store, can I exect a good show from them this year?

I've bought crowns of Rudbeckia and Saponaria; I want to order plugs of
campanula, achillea, lavender and aster. But I'm not a patient gardener and
I'm wondering if I should buy larger plants instead. There again, I'm not a
rich gardener either!!

Thanks.