Mosquito-proofing A Favorite Garden Spot

I have read a lot recently in magazines and newspapers and emails about using lemon grass, rosemary and scented geranium as a mosquito-repellent planting.  When I was at the local garden center, I saw some signs around selected plants claiming mosquito-repelling qualities.  I bought them to try it out this season in the planter near the bistro table on our patio.

The East Indian lemon grass is on the upper left of the planter.

It is a container grass and will grow 24 to 36 inches tall.

The scented geranium Citronella is also expected to be 24-36 inches tall.

Not much other information on the tag about this one.

The rosemary is a roasting type so it should be upright also.

It was not included in the grouping of mosquito-repelling plants at the nursery,

but it was on several of the lists I read and considered part of "the triad".

I was confused when the nursery signs said "Mosquito plant" 

and the tag said scented Geranium "Citronella".  

I talked with the owner and he assured me this is the correct plant for my purposes.

But what plant is it?

I'm willing to try this combination as an experiment--

But then I read this article!

I'll let you know at the end of the season whether we suffered from

mosquito bites--or not.