What are the bulbs found on the roots of my nephrolepis obliterata ‘Kimberly Queen?’
The Gardener’s Answer
Hello, Thomas in Florida: The botany of plants is a very interesting subject. nephrolepis obliterata, commonly known as the Kimberly Queen fern, is no exception. This erect sword fern belongs to a large family but is distinguished among other ferns in this family because of the underground rhizomes it produces and the tubers that are attached to these rhizomes. A few inches below the soil line you will find grape size tubers that are usually green in color. These root tubers store nutrients as well as moisture for the fern and are released when needed. Underground rhizomes and tubers also serve as propagation organs by professional growers. They can be cut into pieces and planted to produce offspring.