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E. T. Fern

Polypodium formosanum 'Cristatum'

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E. T. Fern (Polypodium formosanum 'Cristatum') at Lindley's Nursery

E. T. Fern foliage

E. T. Fern foliage

(Photo courtesy of NetPS Plant Finder)

Height:  18 inches

Spacing:  20 inches

Sunlight:  partial shade  full shade 

Hardiness Zone:  9a

Other Names:  Frog Foot Fern, Grub Fern, Crisatum Fern

Description:

A clumping fern variety producing irregular and twisting fronds of gray-green foliage with black stems and interesting, creeping rhizomes; a nice groundcover for a woodland area; great in hanging baskets or containers, for indoors or out

Ornamental Features

E. T. Fern's attractive ferny pinnately compound leaves emerge chartreuse in spring, turning grayish green in color the rest of the year on a plant with a mounded habit of growth. The black stems are very colorful and add to the overall interest of the plant.

Landscape Attributes

E. T. Fern is a dense herbaceous evergreen fern with a mounded form. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and should not require much pruning, except when necessary, such as to remove dieback. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Suckering

E. T. Fern is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Container Planting
  • Hanging Baskets

Planting & Growing

E. T. Fern will grow to be about 18 inches tall at maturity, with a spread of 24 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 20 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 20 years. As an evegreen perennial, this plant will typically keep its form and foliage year-round.

This plant does best in partial shade to full shade. Keep it well away from hot, dry locations that receive direct afternoon sun or which get reflected sunlight, such as against the south side of a white wall. It does best in average to evenly moist conditions, but will not tolerate standing water. It may require supplemental watering during periods of drought or extended heat. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

E. T. Fern is a fine choice for the garden, but it is also a good selection for planting in outdoor containers and hanging baskets. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a canvas of foliage against which the thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Garden  Container  Basket 
Applications
Foliage Color  Texture  Bark 
Ornamental Features

Disclaimer: Lindley's Nursery & Plant Finder is an online resource representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact Lindley's Nursery & Garden Center 386-428-7298 directly for current availability.