I personally dislike empty spaces in gardens and so does nature. Left empty, this spot will invite opportunistic weeds to move in and then it'll be my job to remove them.
A much better solution would be to plant something in this space. My previous blog was about Hostas and they would fit here very well. Also ferns and other shade loving plants.
You can experiment with shade loving plants and it doesn't even have to cost too much. You can dig up native sword ferns (Polystichum munitum) in the woods-discreetly, of course!-or visit spring plant sales.
Dead spaces look awful in gardens and they will inevitably invite weeds in. Plant something instead.
Vas Sladek, B.Sc., CLHT