You will have weedseeds on your clothing it is part of gardening. The answer is to find clothing with a smooth surface that you can take your hand or a brush and roll the seeds and plant particles off.

I generally wear sweatpants with a t-shirt because my skin on the legs cut easily. Jean shorts should work or broadcloth. Last week at Target they had some very thin/light weight t's with a v neck that I purchased for this task. I do have a farmer tan on my arms but a tank top would work as long as it is a smooth finish.

Instead of brushing the particles off try rolling them with your fingers or a fine cat/dog brush.

maifleur: Thanks,I wore pair cotton knit shorts which was a cutoff from lite wt.sweatpants and a men's t-shirt.
They weren't to hard to remove I think next time I will try using the dogs brush