Hidden underground, roots are basically the most undervalued part of a plant. But there is so much more to the important role ...

The cacti and a few of the shrubs have a very superficial root system. The larger cacti show a differentiation into anchorage and absorptive roots. The plants of arroyo sides have prominent tap roots ...

and the plants can sometimes struggle to become established after planting.' For beautiful gray-blue squash with orange flesh ...

Some perennials have taproots so deep that transplanting ... s root growth and nutrient needs when making plant selections.