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Clarkia rubicunda

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About Reddened Clarkia (Clarkia rubicunda) Clarkia rubicunda is a flowering plant endemic to California. It is found mostly in the central part of the state. The plant is known by the common names ruby chalice clarkia and farewell to spring. It is similar in appearance to another flower of genus Clarkia also called farewell to spring. It bears attractive poppy-like blooms with wide, cup-shaped corollas of four pink or purplish petals. The corolla of the flower sometimes has a bright red center. As the common name suggests, it blooms in June and July.
Plant Description
Plant Type
Annual herb

Max. Height
2.5 ft (0.8 m)

Max. Width
2.5 ft (0.8 m)


Growth Rate

Winter Deciduous

Leaf blade is 1-4 cm long and lanceolate to elliptic in shape. Leaves are smooth and glossy.

Flower Color
Pink, Red, Purple

Flowering Season
Spring, Summer

Native Status

Natural Setting
Site Type
Openings, woodland, forest, chaparral near coast


Elevation ?
1' - 2669'

Annual Precip. ?
17.7" - 75.7"

Summer Precip. ?
0.19" - 1.75"

Coldest Month ?
43.7° F - 51.1° F

Hottest Month ?
60.4° F - 73.6° F

Humidity ?
0.46 vpd - 21.24 vpd

Soil Description

Soil Texture
Clay, Loam

Fast, Medium, Slow

Cold Tolerance(° F)
Tolerates cold to 15° F

Sunset Zones ?
7, 8, 9, 14*, 15*, 16*, 17*, 22*, 23*, 24*

Companion Plants
Consider other sun-loving plants of Central California, such as small succulents (Dudleya spp.) or Purple Needlegrass (Stipa pulchra) and plant with other vibrant wildflowers such as Purple Chinese Houses (Collinsia heterophylla) to create a colorful garden.

Wildlife Attracted
Native bees and butterflies

Landscaping Information
Ease of Care
Very Easy

Water Requirement ?
Very Low
Extremely Low
Very Low
Moderate - High

Max. Summer Water ?
No Summer Water
Keep moist

Pest Control
Generally snail and slug resistant.

Propagation ?
Collect seeds by allowing pods to dry on plant.

Common uses
Deer Resistant, Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Common Names
Ruby Chalice Clarkia, Farewell To Spring

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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