Building up the Asparagus Bed

I planted asparagus crowns in an old unused raised bed a few weeks ago.  This bed gets partial shade in the summer - sunlight really from mid day through evening, and doesn't get a lot of sun in the winter.  while I love asparagus, I don't like plants that take up a lot of year round growing space without a lot of production, as I'm limited in space.  I'm hoping that the asparagus does well here, but if it doesn't - oh well!

The bed is a little over 2 feet wide and 8 feet long.  It's also 8" deep.  Underneath the 8" of soil is clay and pine tree roots.  Not the friendliest of environments probably.    I didn't amend the soil really when I did my planting, though it's loose and filled with organic matter - a mixture of bark and dead roots from previous plantings.  Not sure how rich the soil is.

I planted the crows about 6" down (I didn't want them sitting right on top of the clay base).  Several of the crowns have started growing and have popped well above the soil.  I need the bed to be deeper, so I spent a few dollars at Home Depot for a 12' 2x8 and an 8' 2x8, so I could make an 8" tall addition to the bed.  I'd only planted asparagus in about 6' of the bed so I'm leaving the other 2' at its normal depth.

After completing the additional frame, I laid it on the bed, and carefully added more garden soil.  In a few weeks, I'll probably top this off one more time with some good rich compost, in hopes that the nutrients will soak down through the layers of the bed.

Here are some pictures!