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San Diego Povertyweed
Iva hayesiana
  


About San Diego Povertyweed (Iva hayesiana) Iva hayesiana is a rare species of flowering plant in the daisy family known by the common names San Diego marsh-elder and San Diego povertyweed. It is native to Baja California, and to California only in the vicinity of San Diego. This is a shrubby perennial herb approaching maximum heights near one meter. Its green oval-shaped leaves are fleshy, hairy, aromatic, and 3 to 6 centimeters long. The flowers are nearly invisible; male flowers have translucent corollas and simple yellow stamens and female flowers, if they occur, lacking corollas altogether. This is a plant of mineral-rich waterways such as intermittent streams and alkali flats.

Iva hayesiana is a fast spreading, aromatic evergreen plant that is a great choice for ground cover or bank stabilization. In nature, it's usually found in wetland flats or moister areas, but it's still fairly drought tolerant, and very tolerant to garden conditions. If used for bank stabilization on dry slopes, it needs occasional water, but in flats and sites that retain slightly more moisture, it needs no supplementary irrigation. Plant in sun or part shade.
Plant Description
Plant Type
Perennial herb

Max. Height
2 - 4 ft (0.6 - 1.2 m)

Max. Width
6 - 9 ft (1.8 - 2.7 m)

Form
Spreading

Fragrance
Fragrant - Pleasant

Growth Rate
Fast

Dormancy
Evergreen

Leaves
Oval-shaped leaves are fleshy, hairy, aromatic, and 3 to 6 centimeters long

Flower Color
Yellow, Green

Native Status
Natural Setting
Site Type
Alkaline flats

Sun
Sun

Elevation ?
7' - 4290'

Annual Precip. ?
8.7" - 19.3"

Summer Precip. ?
0.18" - 1.10"

Coldest Month ?
45.0° F - 56.3° F

Hottest Month ?
68.2° F - 79.3° F

Humidity ?
1.39 vpd - 26.19 vpd

Soil Description
Adaptable

Drainage
Fast, Medium, Slow

Cold Tolerance(° F)
Tolerates cold to 10 - 20° F

Wildlife Attracted
Birds

Landscaping Information
Ease of Care
Very Easy

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


Popularity
Moderately Popular

Max. Summer Water ?
No Summer Water, 1x/month
No Summer Water
1x/month
2x/month
3x/month
1/week
Keep moist


Pruning
Hedge clip down to 1-2 feet to keep as a lower ground cover.

Propagation ?
Spreads by layering - branches rooting when covered by soil.

Common uses
Bank Stabilization, Groundcovers, Deer Resistant

Nursery Availability
Commonly Available

Other Names
Common Names
San Diego Marsh-elder



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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