North Coast CNPS

Native Plant Gardens for Viewing Any Time

Public Gardens.  Most are accessible at any hour. Listed north-to-south.  (See lower in article for Private Gardens.)

Trinidad Museum Native Plant Garden, behind the museum.  A fairly large, creatively designed, volunteer planned and maintained, diverse, authentically local, native plant garden.

Bureau of Land Management office, 1695 Heindon Rd.  Beds right in front of the building.

Arcata Community Center Native Plant and Wildlife Garden, on the hill beside Healthsport in Arcata (300 Community Park Way).  A diverse bed designed to attract native wildlife, in particular the six-legged kind, planned and maintained by Pete Haggard, a volunteer. 

Arcata Marsh Interpretive Center, South G St.. The path up into the building wraps around the garden.  This garden is maintained by volunteers.

City of Arcata has installed native plants at many infrastructure projects, such as the Community Center, the roundabout on Sunset Ave and Foster, the firehouse on 10th St, the city parking lots on 7th St, the sidewalk strip on Samoa Ave.  Most of these show what happens with lack of maintenance (weeding) despite good intentions.

Sequoia Park Zoo, 3441 W St., Eureka.  Practicing what Douglas Tallamy advocates, for the sake of wildlife of all sizes, the zoo has firmly committed to converting their landscape entirely to native plants.  Open daily except Monday.  As of July 8, 2020, reservations required.  See the website: https://www.sequoiaparkzoo.net/    Admission charged!  Caring for animals requires money!

Second and H Streets, a curbside garden around a City of Eureka parking lot.  Despite a troubled history highlighting the different landscaping styles of the garden creator and the city's maintenance crew, thirteen species of native, woody plants persist here, some in bizarre shapes.  There is also a non-native tree.

California Department of Fish & Wildlife,  619 Second St., Eureka.  Around two sides of the building is a carefully designed, commercially available, native plant garden.  The small trees are Strawberry Tree (Arbutus unedo), not a native, but a well behaved, easy-to-grow, right-size species related to Madrone.

Jefferson Community Center, 1000 B St., Eureka.  On the B St. side are two, adjacent, small pollinator gardens installed by Bill Rodstrom to show that even a small space can host a diversity of pollinators. Maintained by volunteers (as are most functions of the center). 

Eureka Waterfront Trail along Waterfront Drive west from C St.  The strip between sidewalk and street (which I'm told landscapers call the "Hell strip") has been planted with about 9 species of California native plants.

Humboldt Botanical Garden, behind College of the Redwoods.  Has an extensive California native garden, lots of other amazing gardens, and considerable trails through natural riparian and hillside habitat.  As of July 8 the garden is open with restrictions (number of visitors; masks required).  Check their website. www.hbgf.org  Admission charged; they put your money to good use! 

Humboldt Bay National Wildlife Refuge Visitor Center, Loleta (Hookton Rd. exit).  A modest but sincere garden in an expansive landscape.  Check what hours the entrance gate is open and what is open during COVID 19:

https://www.fws.gov/refuge/Humboldt_Bay/visit/plan_your_visit.html

Coming soon!  WDH Interpretive Gardens, Main Street, Ferndale.  The WDH Foundation established by Willis Hadley is progressing through planning stages to install this garden featuring dune habitat, riparian zone, a butterfly garden, a pond, and a pink Victorian dollhouse. 

           

Private Gardens Viewable from the Street.

 Please respect the owner's privacy; stay on the sidewalk. Listed north-to-south.

 [This list is just a beginning.  If you can add to this list, please tell Carol!]

Every gardener knows that a garden is never finished.  After all, it is dealing with living, growing things, so by definition is changing constantly.  For the same reason every garden, even a native plant garden, needs maintenance, which different owners can provide in different amounts, depending on other aspects of their lives.  We appreciate these owners sharing their creations so that we can see native plants and how they perform in real gardens. 

Many gardens have non-native as well as native plants combined, for historical, sentimental, practical, or irrational reasons.  In looking at these gardens do not assume everything is native!  You have to learn to identify the species!   Some day we might have species lists for these gardens, but that is a distant prospect at the moment.  Practice native plant identification in our natural areas using a good field guide.  (See https://northcoastcnps.org/index.php/activities/plant-id-aids)

99 Langford Rd. (off Scenic Dr.), Trinidad  Almost entirely native, merging with the forest behind.

980 Union St., Arcata (between 7th and 11th, uphill side).  Always cheerful with California Poppies, this small yard is entirely native.  The owner has had to learn to pull out poppies for the sake of having other species.  She has also had to remove or prune shrubs as they reach full size.

2151 Lewis Ave, Arcata (Greenview development).  A typical front yard in a development, this garden is small but packed with diverse species to provide pollinators what they need and caterpillars for birds, while maintaining some order and attractive beds.

1701 Virginia Way, Arcata (Sunny Brae)  A stunning, remarkably artistic, and usually floriferous garden, entirely native.  The owner is now working on making the back yard a habitat garden.      

GHD Building, 3rd and H Streets, Eureka.  At least 23 species of natives, mostly perennials plus a few shrubs, are in the narrow beds around the parking lot and the building. 

Urology Associates, 2576 Renfrew St., Eureka (off Harrison in the hospital zone).  This landscape has been in mostly native plants for a long time.

2904 Williams, Eureka  (Williams & Grotto in Henderson Center area)  The side yard on Grotto St. is almost entirely native; the front yard on Williams St. is mixed native and non-native. 

2424 B St., Eureka  Front yard is almost entirely native plants. 

 

2578 Donna Dr., Eureka (at the top of Humboldt Hill).  A very diverse mix of common and esoteric native species.  A list is available (possibly nearby this document on the website).  Created and maintained by Brant Landscaping. 

If you know of other gardens that should be on this list, please contact Carol at 707-822-2015 or This email address is being protected from spambots. You need JavaScript enabled to view it..

Common Ferns in Coastal Humboldt and Del Norte Counties

Text based on the annual fern walk along the entrance road to Lanphere Dunes the last weekend of April

by Carol Ralph 

April 2020

[Parts of this article were in an article in Econews, April-May 2020]

Most people love ferns in general but have not paused to separate the various fern species among the green blur.  Around Humboldt Bay this is not hard to do.  Here is a quick guide.

First, how do you know it's a fern? Some flowering plants, like Yarrow, have "ferny" leaves; some ferns have "unferny" leaves.  Only ferns have fiddleheads, the uncoiling tips of developing fern leaves.  And ferns do not have flowers or seeds; they have spores, tiny, dust-sized reproductive cells produced in sporangia.  Sporangia are usually on the underside of the frond, usually clustered into brown spots or blotches (called sori) that are visible to the naked eye.  Sporangia are helmet-shaped capsules that open and fling the spores into space. They are light green while they develop and brown when mature.  They remain on the frond, visible, even after the spores have dispersed.  Not every frond produces spores.  Different fern species produce sporangia at different times and in different patterns.  In our ferns, sporangia may be hidden under a rolled leaf edge, clustered under a flap of leaf tissue, or sprinkled over the leaf underside. 

In describing a fern it is useful to note whether it is creeping or tufted.  If the fronds arise singly from the ground, the fern is creeping.  Each frond is attached separately along a creeping stem (rhizome), which may be underground or on the surface.  The rhizome is a snaking, root-like structure up to finger-thick. If the fronds arise from a central point, forming a pleasing, geometric pattern, the fern is tufted.  The fronds are attached to the top of a vertical stem, like a tuft on a feather duster (or like a crown).  It is also useful to describe the degree of "ferniness," how finely divided the frond is. Fronds may be merely deeply lobed, with rows of fingerlike lobes down each side, or the side-lobes (pinnae) may be lobed or divided again (twice divided) or even again (thrice).   

The world's most widespread fern demonstrates the creeping habit and twice- or three-times divided fronds.  Bracken (Pteridium aquilinum), sends up fronds singly from a creeping rhizome that is well underground.  Its frond has a very tough leaf stem and is very "ferny."  This is the only fern frond with tree-like architecture.  The lower pinnae of the frond behave like branches of a tree, orienting separately from the main axis of the frond.  Fronds can be 1-8 ft tall.  They can be scattered through a light-canopied forest, like the dune forest, or packed together filling a meadow. Remember Christopher Robin walking crackling through the Bracken?  It dies back for the winter, i.e. it is winter deciduous.  Its dry, brown, old fronds betray its presence all year.  Don't expect to find spores on these fronds.  They must make them sometime, but I have rarely seen them, or rather, the curled-under leaf edge that hides the sporangia.

Pteridium aquilinum - Bracken
 Pteridium aqulinum 1 Pteridium aquilinum 2 

An abundant creeping fern covering roadbanks, rocks, even dune faces, in mats of tangled rhizome and root and a dense growth of 6-18" bright green fronds is Roadbank Fern (Polypodium calirhiza). (I'll confess to creating this common name.  The name in official sources, Nested Polypody, was just too baffling.) Its fronds are very simple compared to Bracken, being once divided, like a single row of fingers down each side of the frond.  The rhizome creeps on or just below the soil surface, easily seen as a 1/2-inch-thick, knobby, flakey, brown structure.  Now, in April, Roadbank Fern is beginning to look slightly yellow and tired, and almost every frond has many round spots of empty sporangia on the underside.  By the end of May, when so many plants in our area are at the peak of green vigor, Roadbank Fern is yellowing and drying. It has dropped its spores, and will be dormant for the summer dry season.  It is summer deciduous, a good strategy in a Mediterranean climate, Soon after the first rains in fall, fresh, green fronds will emerge, a welcome sight after a dusty summer.   The identification of Roadbank Fern was confused with California Polypody (Polypodium californicum) until in 1991 a study of these species plus Licorice Fern (Polypodium glycyrrhiza) revealed that Roadbank Fern originated as a hybrid between California and Licorice Ferns, and is now hardier and more widespread than either of those.  Licorice Fern is similar but with pointier leaflets and favors lusciously mossy trunks of deciduous trees like Big-leaf Maple, where it usually can stay green all year.  California Polypody does not occur this far north. 

It turns out that ferns often hybridize.  This and other wonders of the fern world are explained in A Natural History of Ferns by Robbin C. Moran, an entertaining and readable collection of essays.  To understand why so much hybridization, picture the tiny spore, a dust-sized mote, released from the parent plant. If it is very, very lucky, it will land in a spot providing the moisture and nutrients to grow into the next plant.  Surprise!  This next plant is NOT a fern with fronds.  It is generally a tiny, thin, green flake called a prothallus.  This is the gametophyte generation of the fern.  (Maybe you took biology and heard about the alternation of generations.)  It produces gametes--mobile sperm and a confined egg.  The next step, fertilization, requires water.  This is why, even though some ferns can grow in dry habitats, they can not reproduce there.  They need water for reproduction.  The sperm are released into a film of water (rain, dew, seep, etc.) and swim to the egg.  If several species of ferns are around, it is easy to see how swimming sperm could end up fertilizing an egg of a different species.  Presto--hybridization! 

That is the first step to a successful hybrid, but a second step is necessary.  If the hybrid embryo develops at all, it usually results in a sterile offspring, like mules, hybrids of donkeys and horses.  This is because chromosome pairing during cell division to make gametes can't match things up.  The process that surmounts this obstacle is a faulty cell division, in which after chromosome doubling, all the chromosomes go to one of the two daughter cells.  That cell now has the original and the duplicate chromosomes, which of course can match up during a later cell division. This faulty cell division is common enough it has a name--polyploidy.  Now each chromosome has a mate, and cell division to produce gametes can proceed with successful results.  Hybridization followed by polyploidy produced a new species! Like Polypodium calirhiza.

Polypodium calirhiza 
 Polypodium calirhiza - Roadbank Fern

 

A taxonomically more stable, larger, tougher creeping fern is Leather Fern (Polypodium scouleri).  Its fronds are singly divided, dark green, leathery, evergreen, and feature a prominent, rounded lobe on the tip. The circular spots of spores are on only some fronds and mostly on the outer half of the frond.  Leather Fern grows as an epiphyte (on plants), including in the largest Redwoods, where thick mats of its creeping stems and tough leaves create huge islands of soil in the tree tops. A falling branch can carry with it a clump of Leather Fern, which will then grow on the forest floor.

 Polypodium scouleri
 Polypodium scouleri - Leather Fern

The classic forest floor of Redwood forests is a lush growth of Sword Fern (Polystichum munitum).  Its fronds are simply lobed, like the polypodies, but are arranged in a tuft than can grow very large.  A gardener planting a cute, little Sword Fern may have to change plans ten years later, as the fern reaches 4-5 ft from the center in all directions.  The leaflets are attached by just a corner to the leaf stalk and get gradually shorter toward the frond tip. Not all fronds produce spores.  When they do, the spores are in tidy rows of circular spots down either side of a leaflet's underside.  Sword Fern is hardy; it grows in dry conditions just fine.

Polystichum munitum - Sword Fern
 Polystichum munitum Polystichum munitum 3 

Also in shady forests and with simply lobed fronds arranged in a tuft, is Deer Fern (Struthiopteris spicant. formerly Blechnum spicant, Its taxonomy has been updated.).  It can be most abundant on cut banks by a trail, road, or creek, where it is free of the dominant Sword Fern. Deer Fern is smaller and tidier than Sword Fern, with a circular crown of fronds. The entire leaflet base is attached to the leaf stalk, and the leaflets get smaller both toward the tip and toward the base. The spores are hidden in the scruffier, narrower reproductive fronds standing vertically in the center of the plant.  All Blechnum ferns have these distinct, fertile fronds to produce the spores. 

 Struthiopteris spicant - Deer Fern
 Struthiopteris spicant

A more "ferny" fern, with finely divided leaves, in shady forests is Spreading Wood Fern (Dryopteris expansa), usually found on rotting wood, like stumps, fallen trunks, or piles of shed bark at the base of a tree.  Its fronds have a triangular outline, meaning the longest pinnae are at the base.  Its spores are in round spots. It is evergreen.  These features distinguish it from the similar Lady Fern (Athyrium filix-femina), common anywhere moisture is found, in forests or out. Lady Fern's soft, bright green, finely divided fronds die every winter.  Its fronds have a diamond-shape outline, meaning the longest pinnae are in the middle. Its sori are longer than wide.  A large Lady Fern may have a short trunk and a large, lush presence.

Dryopteris expansa   Athyrium filix femina
 Dryopteris expansa - Spreading Wood Fern  Athyrium filix-femina - Lady Fern

A relative of Spreading Wood Fern that actually doesn't look much like it, is the widespread Western Wood Fern (Dryopteris arguta).  This species grows in drier places, like inland or occasionally at edges of the dune forest.  It's twice-divided, dark green fronds are evergreen, growing in a tight, somewhat disorganized tuft.

 

Dryopteris arguta - Western Wood Fern
 Dryopteris arguta 1 Dryopteris arguta 3 

Five-finger Fern (Adiantum aleuticum) grows in damp but well drained, forested places, like the walls of Fern Canyon or a shady curve in a forest trail. Its many, dainty leaflets neatly arranged on delicate, wiry, black leaf stalks are guaranteed to elicit oohs and aahs.  These leaf stalks are an important ingredient of Native Californian baskets.  Despite its delicate appearance, Five-finger Fern also grows in serpentine rock jumbles along sunny mountain roads, a seemingly harsh environment.  Don't look for spores in spots under these fronds.  The spores are covered by flaps at the edges of the leaves. 

Another species with a wiry leaf stalk is a fun, little fern encountered in apparently dry places, Goldback Fern (Pentagramma triangularis). It deals with dry periods by curling up its fronds, waiting for rain, which will make it open again. The underside of its triangular fronds is clear yellow, the color of a waxy powder.  Tiny spore spots may be sprinkled all over the underside.

Pentagramma triangularis 
 Pentagramma triangularis - Goldback Fern

In April all these ferns are green, and many of them are growing new fronds, demonstrating their fiddleheads. Earlier in the season the Bracken and Lady Fern will not be up.  Later in the season the Roadbank Fern will be dry, and the Goldback Fern will be curled up.  Right now is a great time for ferns, as well as for flowers!

All photos by author.

 

 

 

My Favorite Flower Field Guides

by Carol Ralph        April 2020

These are the three books I go to most often to look up wildflowers. They have large enough selections that they include most common species.  They have illustrations or photos that (usually) show some or all of the plant, not just a close-up of the flower. 

Plants of the Pacific Northwest Coast by Jim Pojar and Andy MacKinnon. (Lone Pine Publishing, 1994 and later editions)  This is the best all-round plant field guide I have ever used.  As well as wildflowers it includes trees, shrubs, ferns, grasses, aquatics, mosses, and liverworts.  It's all here....as long as you stay on the coast.  It actually does not intend to cover northern California, so it does not include Redwoods, but our flora otherwise is much more similar to coastal Oregon, Washington, and British Colombia than to California south of here.  The many contributing authors clearly really knew their subject plants and were not just describing herbarium specimens or repeating information found in other books.  Species descriptions are enriched with notes of Native American uses, history, and fun facts. 

Wildflowers of the Pacific Northwest by Mark Turner and Phyllis Gustafson.  (Timber Press, 2006 and later edition) Northwestern California is purposely included in the territory of this book.  The publisher insisted, saying that Californians buy books. So we are the beneficiaries of Mark Turner's incredible energy in collecting photos of many hundreds of wildflowers.  The species chosen for inclusion in the book seems to match what we actually encounter pretty well.  And this is the only field guide that does not shy away from the umbellifers (carrot family).  Sixteen species of lomatium!  Mark clearly likes buckwheats as well--nineteen species of them. You don't have to worry about all of them, because the range maps easily show what is in the county you are in. 

A Field Guide to Pacific States Wildflowers by Theodore F. Niehaus and Charles L. Ripper.  (Houghton Mifflin 1976 and earlier and later editions)  I am not the only long-time botanizer who sheepishly pulls out this "old-fashioned" book with line drawings, still being amazed at how it features the species we need and shows the characters we need.  Covering the entire three Pacific States, it includes many inland, southern, and desert species that are irrelevant to Humboldt County.  The newer editions have added some photo pages and presumably have updated the taxonomy. 

Apps for smart phones to help you identify plants have blossomed and multiplied.  From my base of great ignorance I can offer only three bits of information.  My son gets good results with "Seek," an app that you open and then take a photo of the plant.  It tells you what it is or might be.  It may be working with iNaturalist, which is a site on which you can open an account and post photos you hope other people will identify.  In 2016  (which might be ancient history in the realm of apps) Pam Kessler wrote an article for our newsletter Darlingtonia (summer issue) about an apps and twwo websites that help identify plants:  North California Wildflowers by Steven Sullivan, PlantID.net, and Calflora.org.  Her article is available in the newsletters archived on our chapter website. 

Northtown Books in Arcata will order books for pick-up, with very short delivery times.  Check their website. 

 

 Follow a link below for more information.   

Willows
Ferns

Information about the Hikshari' Trail

1. Description

2. Plant List

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