[mumofstig]

  slug poo?

[A Reyt Tayty]

No. Deffo eggs. Individual eggs. Not clusters. Mer am at a loss. Must be something small to get through the netting.

[mumofstig]

fine netting? Debris netting, enviromesh or what they sell as butterfly netting?

The latter keeps out the large cabbage white butterflies but not small cabbage white  or cabbage moth, as I've found out    I think it's the latter that hatch as plain green caterpillars.

[A Reyt Tayty]

It's about 1/4" squares. I'm tipping its a moth. I've been watching and no butterflies have got past it. When I've found them, the caterpillars are only tiny little lime green things.

[chillimummy]

I also have little dark green egg like things on cabbage plants (greyhound sewn few weeks ago). leaves mostly eaten too. wondered if too late to sew more seeds or wonder if plants will recover? all still in pots but look bit pathetic!   

[mumofstig]

If the growing point it still there, then they should recover if you clean them off and cover with fine netting and put down slugbait
cos if the caterpillars don't get them - then slugs will 

[azubah]

I think cabbage white eggs are yellow.

[seaside]

I grow greyhounds, and it's too late to sow anew. I wouldn't bother.
However, they are very resilient and are quite able to come back strongly after a bird/slug/butterfly attack. Sluice off the muck which will also give the plants a good water, pick off any remaining caterpillars and slugs that remain. Then a few more pellets, and re-net. There's a good 5 weeks of decent growing time and depending when you planted, you might get some decent hearts... greyhounds don't take an age like savoys, they do it quite quickly.

[chillimummy]

thanks all for info. will give them a good wash and give them time to recover. planted them 4 weeks ago so hopefully will get something from them