Explosive growth was experienced as of July 1st on the green roof at the playground Rec building in Germantown area of Philadelphia. Sedums have shot up flowered and gone to seed. There are some taller weeds to pull but the sedum is dominating. This is remarkable since the irrigation system was not turned on until July 1st. All bare patches observed this past march have since grown in with sedums.
Weed growth has reached a peak as of july 21
After a full day of weeding and trimming back aggressive plants in this past maintenance visit, the sedums are looking really hardy and the green roof is exceeding expectations. Representatives from the Water department were very impressed with the growth on this roof which is 9 months old.