The sedum and native prairie plants that we are going to use for our
experiment arrived several weeks ago and needed to be planted quite a
while before the start of the internship. And so, we planted them in
their respective roof garden trays as the experimental design dictated.  | |
| Planting the native species in a predetermined random configuration. |
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| Sedum species planted to cover about 80% of the soil. |
I proceeded to water the trays until the start of the internship. I felt rather silly watering the empty, control trays, but it was necessary. The experiment, and really every experiment, need to have a control group as a base line to compare with the treatment groups. The empty trays, containing only soil and inoculum, act as our control groups.  |
| Watering the sedum as well as the empty, control trays. |
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