The Winter Flowering Iris Unguicularis

By Bryce Williamson

Gardeners are always looking for ways to extend bloom season and iris gardeners are no exception. In his recent blog, Hooker Nichols talk about using Louisiana irises to extend the iris season after the tall bearded irises bloom; for those of us that live in a mild climate, there is a little grown iris that can start to flower as early as October and bloom during the winter months—I. unguicularis, sometimes called the Algerian iris. The term Algerian iris is a bit confusing since clones of I. unguicularis are found in the Greek islands, Greece, Syria, Tunisia, and even Turkey.

Lavender Moonbeams (Tasco)--image by Rick Tasco

With plants that grow 12 to 15 inches in height, the flowers can bloom in the foliage. Producing fragrant flowers off and on through winter, the buds are frost resistant though the flowers are not. Unlike most types of irises, I. unguicularis produce flowers over weeks and even months during the winter; however, the plants are loved by snails and slugs, making it necessary to keep the plants free of debris and snails and slugs under good control or they will eat the flowers before you have the chance to enjoy them.

As a plant from dry Mediterranean areas, this iris survive in the summer with only occasional moisture and grows and blooms in poor soil. I. unguicularis is recommended from USDA Zone 7 and higher only. While not widely grown in the United States, the Royal Horticultural Society has named I. unguicularis as one of the top 200 plants in the last 200 years.

Curtis's Botanical Magazine, 1869

Writing in Curtis’s Botanical Magazine in 1869, J. D. H. May noted that information about this iris was “was first published, without a specific name, in 1789, by Poiret, in his Voyage en Barbarie, v. ii. p. 96, and afterwards, first as I. stylosa, by Desfontaines in 1798, and then as I. unguicularis by Poiret, in 1799.” Today I. stylosa is no longer used to describe this fragrant little gem in the winter garden.

There has been some interest in I. unguicularis in what is now known as Silicon Valley for many years; the late Edith Cleaves, of Los Gatos, California, created the varieties 'Edith Cleaves', 'Winter Gay', 'Winter Goldback', 'Winter Memories', 'Winter Mystery', 'Winter Snowflake', and 'Winter Treasure', but they no longer seem to be in commerce. More recently, the noted Central Valley hybridizer, Richard Tasco, best known for creating award winning tall bearded, median, and arilbred irises, has been working with I. unguicularis too. This last year, he raised 600 seedlings.

Image by Rick Tasco

To obtain plants, two sources are available: Superstition Iris Gardens are selling three of the four Tasco varieties this year in 4 inch pots and can be contacted at randrcv@sti.net or search for the Superstition Iris Gardens page on Facebook; Plant Delight Gardens in North Carolina sells them too and they have an on-line catalogue at https://www.plantdelights.com.

Fifteen Tall Bearded Irises For the Beginner

By Bryce Williamson

            It is exciting to go to an iris show or an iris garden, view all the lovely flowers, and then decide to add modern varieties to the garden. Like most things there is a “however” attached. And for the new-to-iris gardener the “however” is what to acquire. The issue is further complicated by new iris varieties selling for large sums of money. Thinking about this problem, I came up with a list of 15 Tall Bearded irises that have proven their worth over time and are reasonably priced. While the list, presented in alphabetical order, is not perfect, it is a starting point for an iris collection.

 

Photo by Rick Tasco

‘Absolute Treasure’ (Tasco, 2006). One of the huge reasons for growing irises is that they provide great blues and violets in a garden, color rarely seen in other flower families. This wonderful light blue approaches true blue; it is an award winner with an Award of Merit in 2010 and a Wister Medal in 2013. What I like most about Absolute Treasure is whether I see it on a one year planting, or in multi-year clumps, this variety produces tall, well branched stalks that hold up the large, ruffled flowers without needing to be staked.

 

Photo by Rick Tasco

‘Arctic Express’ (Gatty, 96). Joe Gatty produced so many lovely irises and had such a great eye for form. It is no surprise, then, that Arctic Express is noted for its deep ruffling. An American Iris Society Award of Merit winner in 2000, this is the gold standard for current whites. I am a strong believer of the importance of white flowers in the garden; an older variety that has also been proven to be time tested is “Carriage Trade” (Gaulter, 1977).

Photo by Rick Tasco

‘Decadence’ (Blyth, 20). An iris creation from Australia that is noted for being loud, brassy, and ever so colorful. Visitors to a garden always are immediately drawn to this variety with its large, laced flowers. This is not one of those varieties that you have to be a connoisseur to identify—it attracts attention to itself and it is a one of a kind. Decadence won an Award of Merit and the Wister Medal. This bright and ever so colorful iris will become an instant favorite.

Photo by Jeanette Graham

‘Dusky Challenger’ (Schreiner 1986). I first saw Dusky Challenger as a seedling in Oregon where it was attracting attention. With good form and superior branching, it made a climb up the American Iris Society award—Award of Merit in and Dykes Medal in 1992. To burnish its luster, Dusky Challenger has occupied the top position on the AIS Popularity Poll for years; it was quickly voted into the Tall Bearded Iris Society’s Hall of Fame.

Photo by Rick Tasco

‘Golden Panther’ (Tasco, 2000). When I first grew this iris, I thought it was only OK, but it was also growing in the shadow of a huge pine tree. Moved to a better location, it has thrived. An Award of Merit winner in 2004, Wister Medal in 2006 and the Dykes Medal in 2009, I do find that its color varies from garden to garden and season to season. Sometimes it is clearly a gold and other years it is much more bronze. In either case, it is a bright beacon in the yard with easy growth habits.

Photo by Paul Black

‘Happenstance’ (Keppel 2000). When putting together a list of irises for the beginning gardener, I knew that I would want to have a pink on the list. At the time of its introduction this iris received good press and was well liked—an Award of Merit in 2004 and a Wister Medal in 2006. Ten years later it is still very popular due to its strong stalks, good growth habits, and ability to bloom in many areas of the country. Too often pinks are not the best of garden plants.

 

Photo by Evan Underwood

'Jesse’s Song' (Williamson, 1983). Not the boldest colored plicata in the world, but time has shown this variety to be a great garden iris. Winning an Award of Merit and then a Dykes Medal in 1989, Jesse’s Song has been a hit in the garden and at iris shows. Last year it was in second place on the American Iris Society’s Popularity Poll and it tied for the most Queen of the Show awards in the US. One of the first irises voted into the Tall Bearded Iris Society Hall of Fame, Jesse’s Songs likes to grow and bloom in all parts of the country.

Photo by Evan Underwood

'Lady Friend' (Ghio, 1981). When it was introduced, Lady Friend did get some attention, winning an Award of Merit in 1985; however, while many of the other Award of Merit winners from that year have disappeared from gardens, Lady Friend is still widely grown and continues to be on the AIS Popularity Poll. The main reason is that it is a variety that grows and blooms with ease; secondary reason is that it is one of those unique colors. For those reasons, it is widely grown and appreciated.

 

Photo by Barbara Nicodemus

'Ozark Rebounder' (Nicodemus, 2003). I was searching for a dark-to-black iris for this list and this became my selection for three reasons. First, Ozark Rebounder has good form in the dark violet to near black color range; second, it grows well around the country; and the third reason is that it reblooms. With reasonable garden culture, it will bloom again in the fall, providing a splash of color. An Award of Merit winner.

Photo by Marilyn Campbell

'Persian Berry' (Gaulter, 1977). Larry Gaulter is in my opinion one of the underrated hybridizers with four wonderful, still grown, creations to his credit—Laurie, Mary Frances, Carriage Trade, and Persian Berry. And Persian Berry, winner of an Award of Merit, is one of those unique varieties—it has never been improved upon. With its lovely color and its distinctive shoulders, it is easy to spot this variety from a far. A home about 3 miles from me has a clump in the front yard and once it blooms, even from a distance, I can spot it. Very distinctive.

Photo by Amazing Iris Garden

‘Queen in Calico’ (Gibson, 1980). Another Award of Merit winner, this “pink” plicata ranks high in that color class. Still lovely these many years after its introduction, I been told that in some climates it may not perform at its best. I recommend talking to a local iris grower or your local club before buying this one, but if it will grow and bloom for you, you will be more than happy.

Photo by Paul Black

‘Queen’s Circle’ (Kerr, 2000). The Emma Cook pattern had been around for years, but Fred Kerr took that pattern to new heights in this wonderful creation. I consider this one of the best Dykes Medal winning irises in recent years. With lovely, large, ruffled flowers, fine branching and bud count, the plants grow and bloom all around the country regardless of climate. No wonder it won a Wister Medal in 2006 before winning the Dykes in 2007.

Photo by Rick Tasco

‘Stairway to Heaven’ (Lauer, 1993). Softly colored, but there is nothing soft about the stalks and plants. A Dykes winner in 2000, Stairway to Heaven grows and blooms with ease, making large clumps in no time. Branching and bud count are also good as this dependable and easy to please garden iris. Popular in all areas, this has been voted into the Tall Bearded Iris Society’s Hall of Fame.

Photo byJeannette Graham

‘That’s All Folks’ (Maryott, 2005). Bill Maryott’s last iris introduction before he transformed himself into a daylily hybridizer and the last one was the one that swept the awards. Winning a Wister Medal in 2011 and the Dykes in 2013, That’s All Folks is noted for strong growth, ramrod straight stalks, and huge, colorful flowers. I am a firm believer in yellows in the garden since they bring a shaft of sunlight even on inclement days. These eye catching flowers will attract attention in the garden.

Photo by Steve Sayers

‘Thornbird’ (Byers, 1989). Lloyd Austin, with his Space Age irises, changed flower form, but it was Monty Byers who stormed the American Iris Society and ended winning three Dykes Medals with Space Age varieties. Thornbird won an Award of Merit in 1993 and the Dykes in 1997. It is also a Tall Bearded Iris Society Hall of Fame iris. It is one of those varieties that the colors can vary widely from area to area and climate to climate, but it is always a garden favorite.

My thanks for the photographers who contributed to this blog. Without their help, it could not have been finished. Lloyd Austin, mentioned in the comments about the iris Thornbird, will be the subject of three upcoming blogs about space age irises, their creation, and a fourth blog will discuss those irises today.

Mt. Pleasant Iris Farm, Part 3

By Bryce Williamson

On the scenic drive up the Columbia River Gorge on the bus at the 2015 AIS National, I read that when Chad Harris and Dale Grams moved to what would become Mt. Pleasant Iris Farm they found the fields covered in old growth Himalayan blackberries ranging from 10 to 15 feet deep.  The next three years were spent clearing the land.

Today no sign of the overgrowth is present and instead, we were greeted with long rows of well grown irises, expanses of manicured lawn, and perennial borders.  Yes, peak bloom for bearded irises had passed, but after peak bloom the weather had turned cool to cold and damp to wet so there were many irises still in good bloom.  In fact, I found the three days of the tour to be the best days I have ever spent taking images since the overcast weather reduced shadows and helped create good quality images.

There were a number of tall bearded irises that I saw and liked in this garden over the last two years.  Since a picture is worth a thousand words, I will curb my verbosity and let the pictures do the talking.

Lynda Miller's Miniature Tall Bearded, 'Moose Tracks', was attracting attention in the guest beds.  My thanks to Kelly Norris for permission to use his copyrighted image.

Moose Tracks would go on and win the Hager Cup at the Awards Banquet on the last night of the convention.

I don't know whether to be happy or sad that I live so far away from Mt. Pleasant Iris Farms. There is so much to see from very early in the spring through June that if I lived closer, I would be making a pest of myself and visiting the garden every ten days.  On the bucket lists for the future is a trip up to Washington to see the Japanese irises in bloom.  Chad wrote that next year the Japanese irises will be blooming on 2 and 3 year clumps and the results should be spectacular.

Chad Harris's introductions can be found at two sources: http://www.mtpleasantiris.com and http://aitken-garden.goodsie.com. 

Images in this blog are copyrighted and cannot be reproduced without permission of the copyright holders Bryce Williamson and Kelly Norris.

Mt. Pleasant Iris Farms, Part 2

By Bryce Williamson

While my first blog on this amazing garden focused on Siberian irises, this time I want to highlight some of the other beardless irises growing in the garden that Chad Harris grows and, in two cases, hybridizes.

Last year, on my first visit to Mt. Pleasant Iris Farms, I drove up Highway 14 and onto Marble Road to the manicured garden, where I parked in the shade by the barn.  Immediately I was drawn to one of the water features of the garden— a lovely pond with naturalized irises. A spring on the north hillside provides the gravity feed to run sprinklers.



 Little did I know at that moment that almost 25 years of hard work has gone into this paradise.

Chad is careful not to plant any water irises that are fertile and might release seeds that would get into the Columbia River Basin ecosystem.



Chad has spent the last 15 years working with Iris laevigata, a native to North East Asia, Russia, and Japan. As the Mt. Pleasant catalogue notes, “A true water iris, Iris laevigata will look its best growing in shallow water or a large pot with a deep reservoir filled with water. It can also thrive in a moist to wet setting such as a rain garden."

“Iris Laevigata will grow from 24 to 36 inches tall with 4 to 6 inch flowers." To date, Chad has introduced the two hybrids pictured below:

'Lakeland Ghost'

'Blue Rivulets' photo by Chad Harris

Recently, Chad has also been growing "Pseudata" seedlings. These are, to quote from the catalogue, “a cross between plants with iris pseudacorus backgrounds and iris ensata (Japanese, Hanashobu). The iris world is very fortunate that Hiroshi Shimizu shared many years of his work; finding a good pod parent ('Gubijin') so all hybridizers could explore the possibilities that this cross may bring to the garden."

Harris pseudata seedling in a clump

Harris 08SPCX D photo by Chad Harris

Harris HPIM9403 photo by Chad Harris

Harris 08SPCX D photo by Chad Harris

Harris 08SPCX F photo by Chad Harris

During the National Convention of The American Iris Society  in which this garden was part of the tour, one other interspecies hybrid attracted much attention. In a huge, husky clump, Jill Copeland’s 'Do the Math' was impressive.



A surprise in the garden was Phillip Ramare's PC-1.  Usually Pacific Coast Natives bloom early, but this nicely colored seedling was still in good bloom.

Chad Harris's introductions can be found at two sources: http://www.mtpleasantiris.com and http://aitken-garden.goodsie.com. Both Mt. Pleasant Iris Farms and Aitken’s Salmon Creek also carry a wide range of other types of beardless irises.

More on Mt. Pleasant Iris Farms to come!

Please respect the copyright on these images by Bryce Williamson and Chad Harris.