Click to enlarge.
What is a "hidden mysteries of plants - their roots!" to clay pot gardeners is an everyday sight to growers smart enough to grow plants in clear planters like these recycled pop/soda bottle planters.
As these photos demonstrate, plant roots do not have an aversion to light. It is an urban myth and a horticultural myth. Ah, sweet mystery of (plant) life.
There is no better way to learn and teach plant science and physiology than growing plants in clear sub-irrigated planters (SIPs) like these. You can clearly see the condition of the plants root system and the status of soil moisture. It is no mystery with these planters.
Opaque clay and plastic pots are plant killers in the hands of many neophyte gardeners because of the vitally important "hidden mysteries".
Following is the "hidden mysteries" excerpt from my email inbox.
Propagation and Transplant Workshop
Washington Park will be undergoing extensive renovations on its east side.
Some of the garden areas will be in the construction zone, so many plants are being moved, now.
The garden is also still growing and new garden areas are being formed.
This is an exciting opportunity to gain hands-on experience and to observe the hidden mysteries of plants - their roots! (my emphasis)
Plants multiply in many ways and you may see air layering, rhizome division, seeding and root cuttings happening through day.