Wife went shopping today at a nursery and came home with some pond plants... These things have duckweed all over them... Spent a better part of an hour cleaning them, but am still scared of putting them in pond... They were very expensive but are pretty mature plants...

What do I do?.... Take them back or do my best to raise them in tubs to make sure there is no duck weed left?...

Maybe I am just over thinking this.... AS NORMAL!!!

Unless you're certain there are no DW seeds in with the "cleaned plants", I'd suggest growing them under quarantined observation until you're confident that your cleaning job removed all DW plants AND seeds.

Grrrrrrr!!!!!

That's what I was afraid of... What is a good way to grow them under quarantine?...

We got a couple of different varieties of hardy lilies, and some marginals... Iris and arrowhead of some variety, then a 3, yep I said 3 water hyacinth...

I can't give you much experience-based guidance there, but know that contaminated plants from water gardens are the source for many outbreaks of invasives (Giant salvinia, for example).

I have had them in plastic tubs for the last 4 days... Today is the 1st day I have not picked duckweed out of them... Plans are to replant with clean soil this weekend and let stand in tubs for another week..

Also picked a snail out of one tub yesterday...