Posted: 24/03/2016 at 20:13
Sorry, but Vine weevil eggs are too small to be seen with the naked eye. Osamocote does have a liquid centre when in damp soil.
This is a perennial question raised on more Gardening sites than almost any other question.
Now to really confuse folks the slow release stuff I have been adding to compost to day has balls of almost every colour in the rainbow.