One of the benefits of using soil blocks to grow seedlings is it eliminates the need for plastic cell packs or peat pots. The soil block functions as both the container and the soil for starting and growing seedlings.:
Excellent example of how to pair repetition (purple catmint and orange sedge grass in the foreground) with diversity- many of the plants are only used once. To make the onesies fit in, use different plants of the same color.