|Florida green roof plant root architecture - beautiful horizontal root structure|
I think the Florida extensive green roof root structure depicted here in these photos is simply beautiful.
|Green roof plant root architecture - horizontal root structure growing into anchor|
My preference is shallow soil media and unimpeded horizontal growing space for green roof plant roots. I do not like sectional barriers that may limit horizontal root growth and ultimately cause root circling-root bound growth patterns.
|These grasses possess good green roof plant root architecture - not too aggressive but sturdy|
|An anchor system may keep plants on a roof during tropical storms|
|Unimpeded root growth prevents strangulation of green roof plants|
The grasses in these photos show this principle in practice. Using a small, mock up green roof growing system these plants have embedded their roots into a nylon fabric, creating an impressive anchoring form of root architecture and growing in a well defined, horizontal fashion.
|A good green roof plant architecture will create a monolithic growing mat with plants anchoring each other|
If you are wondering, the photographed soil media contains less than 5% organic material. The bark-looking chips are actually ground recycled rubber tires. This is an experimental soil media, one we do not use on actual green roofs due to fire ratings.
Know your green roof plant architecture. Remember, in the end a green roof is first, foremost and all about designing a growing system that keeps the green roof plants happy, healthy and surviving in the long term.