September 2014 Plant Profile: Coreopsis Big Bang™ ‘Star Cluster’

September 4th, 2014 by Soest Gardener, Riz Reyes

Coreopsis Big Bang 'Star Cluster'Tickseed is the common name for the cheery and colorful Coreopsis. Long  utilized as a border plant in  perennial gardens, it’s often only know for its ferny green foliage and one main flush of bright yellow blooms in early summer. Now, thanks to Darrell Probst’s spectacular  breeding work on the Big Bang series, the genus has been revolutionized, with a wider range of colors with almost continuous bloom throughout the season! Skagit Gardens in Mt. Vernon, WA has sent us samples over the years to display and trial here at UW Botanic Gardens and we have them peppered around the Center for Urban Horticulture.

This stunning selection is ‘Star Cluster’. It probably has the tidiest habit of all the Coreopsis we have. It has worked very well as a edging plant because it stays fairly low and it has been in flower since June with minimal deadheading.  The color progression of the flowers is quite fascinating as it opens to a lovely cream with a crimson center and over time and as the weather cools for autumn, the center color softly blends and becomes more prominent on the entire flower.

 

 

Coreopsis Big Bang 'Star Cluster'

 

Coreopsis Big Bang 'Star Cluster' habit

 

Family: ASTERACEAE
Genus: Coreopsis
species: N/A
Common Name:  Tickseed
Location: Soest Garden Bed 5
Origin: Garden Origin.
Height and Spread: 15-18″ wide and 10-12″. tall
Bloom Time: June-Frost

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October 2013 Plant Profile: Hypericum Hypearls™

October 1st, 2013 by Soest Gardener, Riz Reyes

Hypericum 3Since our sample plants arrived three years ago from Blooms of Bressingham, this series of hybrid St. John’s Wort has really impressed us with their vigor, beauty, and reliability out in the garden.  These short shrubs are wonderful in bedding; not only are their showy yellow flowers attractive, it’s the fruit on these tidy plants that are the main draw.

Luminous pink to captivating corals, they often will be blooming and fruiting at the same time making them exquisite in floral arrangements. Even the ripened black fruit remain intact and are quite ornamental.

 

 

Hypericum 4

Hypericum Hypearls™ Olivia with Erigeron ‘Prosperity’ poking through

Hypericum 1

Hypericum Hypearls™ Renu

Hypericum 2

Hypericum Hypearls™ Renu with older fruit

Common Name: Hybrid St. John’s Wort
Location: Blooms of Bressingham Plant Trials
Origin: Garden Origin
Height and Spread: 2-3′ high x 3″ wide
Bloom/Fruit Time: Mid-June-Frost

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June 2012 Plant Profile: Gentiana x ‘True Blue’

June 7th, 2012 by Soest Gardener, Riz Reyes

Blue is such an elusive color in the floral kingdom and it’s no wonder that people are captivated by any flower that’s blue. Sadly, flowers that aren’t naturally blue have been artificially dyed in order to sell, but this month’s Plant Profile highlights a genus that’s known for its natural blue flowers and that’s the Gentian.

Many Gentians are alpine/sub-alpine  herbaceous perennials. Species require very specific watering, soil types and exposure. There was great excitement when this hybrid was released as not only were they able to capture the purest blue of a Gentian, they developed a garden-worthy plant that’s adaptable to most home gardens. It was aptly named ‘True Blue’.

This plant is spending its third year here at CUH and it’s been moved quite a bit, but it overwintered beautifully this past winter and, with luck, it will bulk up with more of these ethereal blue blossoms that are capable of blooming on and off throughout the summer.

Common Name: True Blue Gentian
Location: CUH-Soest Garden Bed 6 (just behind signage)
Origin: Garden Origin
Height and spread: 25-30″ high and about 18″ wide.
Bloom Time: Early Summer through Mid-Autumn.

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