Monthly Archives: April 2023

Eastern North American Native Ferns

Ferns are magnificent, whether in the wild or under cultivation. Among the oldest plants on earth, ferns can be traced back to the Coal Age, over 300 million years ago. Today, ferns are one of the most overlooked and under-utilized perennials in the garden.

Types of Ferns

Eastern North American native ferns are available in a vast array of sizes, forms and textures and thrive in a variety of habitats. Many ferns present a combination of both fertile (with spores) and infertile (without spores) fronds that add an additional element of interest to their growth and texture. Some ferns prefer sun, some shade. Some prefer moist soil, some dry. Some spread quickly, some stay put. Some are easy to grow, some… not so much. You get the picture – the versatility of this plant group ensures a selection for every gardener and every garden situation.

With so many ferns to choose from, which is right for your landscaping needs? Consider the following popular varieties, or come in to consult with our landscaping experts to find the perfect fern to complement your landscape.

  • Cinnamon Fern (Osmunda cinnamomea) – Grows 24-36 inches tall. The stiff fertile fronds appear in spring, first green and later turning cinnamon-brown. The plant grows neatly in a symmetrical clump. This fern does best in a shady site with moist soil.
  • Christmas Fern (Polystichum acrostichoides) – This is one of the few evergreen ferns native to the eastern United States. The leathery fronds of this durable fern reach 18 inches in height. The Christmas fern is not an aggressive spreader and is easy to nurture in a moist, shady garden.
  • Hay-Scented Fern (Dennstaedtia punctilobula) – This lovely fern grows to about two feet in height and spreads rapidly. Spreading may be controlled by pulling out some of the growth in spring. This fern does best in full sun to partial shade and will tolerate somewhat hot, dry sites. Hay-scented fern produces lightly scented, apple-green, lacy fronds that add delicacy to the garden.
  • Interrupted Fern (Osmunda claytoniana) – This fern is unusual for its sterile, three-foot tall fronds that have brown spore cases in the middle of the frond with pale green leaflets both above and below. Interrupted fern grows best in a shady site with moist soil. This fern will tolerate more light and drier soil than most, and it is remarkably easy to grow.
  • Lady Fern (Athyrium filix-femina) – This fern can reach up to 36 inches, although its height can be quite variable. This easy-to-grow fern is an excellent choice for beginners. In the spring, Lady ferns produce a hearty flush of reddish-green growth. This is when the plant is most beautiful. Lady fern does best in shady conditions with slightly acid, moist to wet soil.
  • Maidenhair Fern (Adiantum pedatum) – At 18 inches tall, this specimen is the daintiest of the Eastern North American native ferns. The fan-like leaves are borne on delicate, curving, black stems. This fern does best in filtered light and well-drained, cool soil. This fern spreads fairly slowly.
  • Ostrich Fern (Matteuccia struthiopteris) – This fern produces light-green, gracefully arching fronds that reach up to 40 inches or more. This is an excellent choice for background planting. Underground runners extend in all directions and will colonize large areas, so it needs abundant space. The early spring fiddleheads are edible. Ostrich fern does best in sun to partial shade and moist soil. It is native to marshy areas.
  • Royal Fern (Osmunda regalis) – This fern forms a three-foot, vase-shaped clump of bright green fronds. Light brown spores are borne on the top of the fertile fronds. Royal fern does best in shade or sun and a moist organic soil.
  • Sensitive Fern (Onoclea sensibilis) – This fern makes a spectacular ground cover of 18 inch high, light green fronds. The fronds emerge in the spring tinged pinkish-purple until maturity. This fern prefers average moisture and part sun.

Keeping Cats Out of the Garden

Do you love cats but don’t love them in your garden? Outdoor cats will seek out a nice patch of soil to do their business or to roll around and play. Cats will mark their territories on sheds, fences or plants, and may even raise a new litter under a deck or in an open shed. Fortunately, there are a number of safe yet effective ways to keep our furry friends, or those of our neighbors, from messing up the garden.

Discouraging Cats

Whether the cats visiting your garden are prowling pets, lost strays or wild-bred feral cats, the same techniques can be used to make your garden and landscape less cat-friendly. Popular options include…

  • Commercial Repellents
    There are a many effective odor and taste repellents on the market. Seek out a product that is safe for humans and animals made from botanical oils. You will need to reapply this type of repellent after a heavy rain but usage will decrease once the cat is retrained to go elsewhere.
  • Citrus Smells
    Cats don’t like the sharp, tangy smell of citrus. Instead of composting them, throw the peels of oranges, lemons, limes and grapefruit on the ground where cats tend to visit.
  • Heavily Scented Plants
    Some plants are known to repel cats by their scent, particularly plants with strong odors that will irritate sensitive feline noses. Try planting Coleus canina, otherwise known as scaredy cat plant, along with pennyroyal, rue, lemon-thyme, geranium or lavender throughout the yard and garden.
  • Uncomfortable Ground
    Use stones instead of mulch as a ground cover to prevent cats from digging. Sharper, larger stones are best and will be uncomfortable for cats to walk across or lay on as well. You can also lay chicken wire on top of the mulch to make it less comfortable for cats and to prevent digging.
  • Opt for Thorns
    Plant low growing, thorny plants such as carpet roses, barberry or prickly pear at the base of your bird feeder to protect your feathered friends from predatory cats. Use thorny plants in borders or alongside fences to help keep cats away as well. Even plants with sharp, stiff foliage, such as holly, can be effective.
  • Sprinklers
    Install a motion-activated sprinkler. This method is used to frighten cats away, not to soak them. As the cat is retrained to go elsewhere its use eventually becomes unnecessary.
  • Sound Deterrents
    Install an ultrasound device containing a motion sensor which, when triggered, gives off a high-pitched sound that is imperceptible to humans but bothersome to cats. With their sensitive ears, cats may avoid any area where the sound is strongest.
  • Remove Food
    Be sure there are no food sources for outdoor cats in your yard. Do not feed your own pets outside, and keep trash cans tightly covered or inside a garage where cats cannot reach them. Keep compost piles behind a fence and under a mesh cover as well so cats cannot forage for scraps.

Using several techniques simultaneously will have the best effect at discouraging cats. These are clever, intelligent creatures that can easily overcome one obstacle, but when you have used several tactics at once, the cats will take the easier route of simply staying away.

What You Should Never Do

While there are many ways to keep cats out of your yard, you should never take steps that could deliberately injure or kill the animals. Avoid harmful traps, toxic poisons or setting your dogs on outdoor cats, as these methods can easily backfire and hurt local wildlife instead. With patience and perseverance, it is possible to keep cats out of your garden safely.

Needled Evergreens for a Shady Space

Evergreens are a very important addition to the winter landscape. During the coldest months of the year, when most other plants have been stripped of their leaves or have died back to the ground, evergreens are the stronghold in the garden that provide stunning texture and color, shelter for winter wildlife and the hope of spring for everyone.

Choosing a broad-leafed evergreen for a shady location in the garden is simple. There are so very many to choose from: Rhododendron, azalea, camellia, aucuba and cherry laurel are just the beginning, and there are many more options for any size or shape of shady space. It’s a different story when it comes to hunting for a needled evergreen for that darker corner of the landscape, but it is not impossible.

Popular needled evergreen options for shady spaces include…

  • Canadian Hemlock (Tsuga canandensis) – Broadly conical and gracefully branched, reaching up to 75 feet high.
  • Dragon’s Eye Pine (Pinus densiflora ‘Oculus-draconis’) – Part shade. A very unique, asymmetrically shaped pine with a pale halo on the needles.
  • Dwarf Hinoki Cypress (Chamaecyparis obtuse ‘Nana Gracillis’) – Slowing growing, compact plant with dark green scale-like leaves.
  • Japanese Cedar (Cryptomeria japonica) – Light shade. Graceful, pyramidal tree with bluish-green scaly foliage and exfoliating cinnamon-colored bark. Growing to 65 feet tall.
  • Japanese Umbrella Pine (Sciadopitys verticillata) – Light Shade. Needles are thick and succulent, whorled around the branches.
  • Nootka False Cypress (Chamaecyparis nootkatensis) – Light to part shade. Narrowly pyramidal growing up to 60 feet tall.
  • Russian Cypress (Microbiota decussate) – Part shade to full shade. Low to the ground forming a rosette of soft, graceful branches. Great ground cover for a shady location.
  • Spreading English Yew (Taxas bacata repandans) – Part shade to full shade. Three feet high and mounding. Great foundation plant in front of windows or at the back of borders.
  • Upright Japanese Plum Yew (Cephalotaxus harringtonia ‘Fastigiata’) – Part to full shade. Four foot tall, stiff, linear form.
  • American White Cedar (Thuja occidentalis) – Light to part shade. Scale-like foliage formed into flat plane fans. Grows up to 40 feet tall.
  • False Arborvitae (Thujopsis dolabrata) – Light to part shade. Pale green leaf scales with white undersides. Grow up to 65 feet tall.

Not sure which of these evergreens may do well in your landscape? There are different cultivars to explore, and our experts can help you make the best choice for your landscaping needs.

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