My records have failed me once again.  I know I potted up the tulip bulbs for forcing sometime in December. Brent and Becky sent pre-cooled tulips and I thought they would start to sprout almost immediately, but I am still waiting for most of them to get beyond this stage.   Although they were planted earlier than the tulips, this little pot of Muscari armeniacum "Christmas Pearl", chosen because it was listed as a good bulb for forcing…