I don't know what this is but it must be from a long lost bulb that the rain encouraged. In the year I've lived here there has never been signs of life back in this patch of dirt. The ground is totally saturated
The construction of the house finished in April 2011 and I'm pretty much settled in. As of March 2014 I'm in preparation for rain mode for this coming summer. That includes sealing and painting things and dealing with drainage issues from last year.