A radish will take up a 1" space when it's grown (at least) so you would be planting one seed per cup or so!
I find radish and other root veggies are best sown right in the ground they are to grow in.

I was going to try something similar.

I figured radish seeds are cheap, and my girls LOVE them.

They grow so quickly, though, anyway, I'm not sure it's worth a ton of extra effort to have the radishes at eating size a few days early. But at the same time, come spring we are all sooooo desperate to eat something out of the garden!

I was going to purchase some of those boxes that you can hang over a deck railing this week, and WS the radishes in there. When the weather starts to warm, I can just hang them up in the right position on the deck railings.

Hopefully, we can harvest those radishes earlier than the ones we will be direct sowing, and then use the boxes to plant out some of my WS herbs so I have them handy to the kitchen! Maybe even some of the Mesclun for quick sandwiches.

Hmm - I may experiment with WS one of the boxes with the radishes and herbs together - if all goes well, I can be harvesting the radishes while the herbs are small, and they will then have the space to spread out. . .

This feels like the sort of thing that will work some years, (like warmer early springs) and not others (like this one is shaping up to be)

We'll see!

I plant them out by small HOS, and they push out from the middle of the hunk and fill the surrounding soil.

T

Thanks -- I'm really just trying to save space in the veggie garden. I might try both ways and see what happens!

Leisa

Sowing radishes in a container is an excellent idea - deck boxes, larger pots - works great. I like to do that with arugula, cilantro and garden cress too. Might try it with cutting celery.

Fast little crops, nice to have right by the kitchen door.

I've done that radish & mesclun mix in the "over the deck rail" type of containers and was really pleased with the results. It did better planting the mesclun seeds about 2 weeks ahead of the radishes, then just using a pencil to randomly poke holes in the seedling area for radishes to go into. I'm Z-5, did this in early April a few years ago. (not a winter like this one!)

Also found that smaller herbs such as Italian parsley, oregano, & basil also like these boxes. They can be transplanted to the big herb garden in late summer. Or go into little pots for the kitchen. : )