Hmm, it doesn't look like any of the common grass weeds around here. If it has round shoots I'd say it's more likely a spike rush (Eleocharis) which we have growing in all the low wet spots of our yard. I've never heard of it invading raised beds though. Are stems hollow?

Rook, the farther you get away from MA the worse the university lawn care advice is going to be. Universities are typically focused entirely on their state and nobody elses. Certainly you could not come to Texas A&M website for Mass grass care advice. UMASS probably has a good site for your specific area. One of the reasons to come to a forum like this is many of us have been reading here for years and realize that most permanent lawn care websites are too locally focused to provide universal advice. We try to tune our comments to be helpful for YOU and avoid the many pitfalls that might come from other regional locations. There are three or maybe four regions that makes sense. One is the northern areas east of the Rockies. Another is the south south of Tennessee and east of the Rockies. Another is the west west of the Rockies and south of Redding, Calif. Another larger one is the Pacific Northwest north of Redding and west of the Rockies. But within those general regions are micro climates and soil differentiation that make it harder to generalize within a region. Sometimes on these forums you find someone from your neighborhood. You never know until you post.

I agree with both peren.all's IDs and the comment that they are both aggessive spreaders in a garden that are difficult to remove once established. I have the grass (variegated ribbon grass is the common name) in a pot where it overwinters well and hasn't escaped, but I wouldn't want either loose in my garden.

I don't have a comment on the shrub, but based on the foliage color and the seeds visible at the top and bottom of the grass photo, it's crabgrass. In my yard, as the seeds start to develop, the leaves and stems often develop deep pink to purple-marroon tones.