If you want to plant around a tree, select one that's less than a year or two old to avoid damaging extensive root systems. (marthastewart.com)
This forces the plants to develop extensive root systems. (remonline.com)
That shallower root system inherently absorbs less micro-nutrients from the soil column compared to organically raised plants that are forced to have deeper, more extensive root systems to obtain all of the nutrients the plant needs. (truthaboutabs.com)