35mm f2 or 40mm 2.8 for garden and walk in the park lens.

nelsonal wrote:

I chose the 40, but it's not wide. Leave your 18-55 at 40mm for a few days to see if you think it'd be a useful focal length. The best lens in the world that sits on the shelf because it's not a focal length someone likes might is worse than the kit lens that gets used. A narrow lens can be stitched to achieve a wider angle, though that's not useful for all subjects nor images.

That said, I personally believe there isn't a better bang for the buck lens than the 40mm. It's not the fastest, but it's better at f/2.8 than any other budget lens. It's one of two AF lenses I own and the only one I bought new:

Finally, if the light's bad, a flash might be a more useful option. For depth of field you'd probably be better off to consider something longer like the 85/1.8 or 100/2.