[harry]

I checked my trays of  seed potatoes this morning and found some are soft and some are green are they ok 

[JayG]

Light does make them go a bit green, and they do get a bit softer with prolonged chitting as they lose some of their water content.

If the chits look OK, and they're slightly soft rather than mushy, they should be fine.

[harry]

Thanks they are only slightly soft

[JayG]

You wouldn't be in much doubt if they were rotting - there aren't many worse pongs in this world than from a rotting potato IMHO!