Greenroofs in full bloom

It's that time of year again when the greenroofs at Pringle Creek burst to life. This year we saw the new arrival of several camas lilies (which apparently take two years to mature and bloom). Bulbs such as these, and others (fawn lily, onion and other alliums) really thrive up here -- they can tolerate wet feet and a dry dormant summer. Below is the view outside our bedroom window! We've seen all sorts of birds and bumblebees, and it is way more interesting that looking out over a regular metal or flat roof, in addition to the fact that this roof type lasts longer (shielded from UV light) and provides a big environmental benefit (acts like a giant sponge) reducing impact on the watershed.

Yes, this is a rooftop garden.....