Callistemon viminalis

Accession Count: 38
Common Name: 'Little John' dwarf bottlebrush, dwarf callistemon
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Family Name: Myrtaceae
Botanical Name: Callistemon viminalis
Sub Species:
Variety:
Forma:
Cultivar: 'Little John'
Characteristics: An evergreen small shrub that typically forms a 3 to 5 foot tall by 6 to 8 foot wide rounded mound with narrow 3 inch long bluish gray-green leaves and flowers of blood-red bristle-like stamens that appear throughout the year. According to the San Marcos Growers, “The genus was named using the Greek words 'kallos' meaning "beautiful" and 'stemon' meaning "stamens" in reference to the long conspicuous and colorful stamens that characterize the flowers of this genus (1). Peak bloom time is early summer through fall. It was the 1986 Shrub of the Year in Australia and was originally introduced as a plant that only grew to 3 feet tall but older plants can now be found in cultivation are typically 4 to 5 feet with plants at the South Coast Botanic Garden in Palos Verdes California that have exceed 8 feet in height.

Compound: Cal vim lit
Geographic Origin:
Ecozone Origin:
Biome Origin:
Natural History: This plant was selected as a chance seedling in the 1980s by Ken Dunstan of Alstonville, New South Wales and was also called Callistemon 'Alstonville Dwarf', Callistemon 'Tom Thumb' and Callistemon viminalis 'Little John'. 

Melaleuca and Callistemon have long been noted as being closely related and were separated on the basis that Callistemon stamens are free and those of Melaleuca are in bundles. Carl Linnaeus had described the genus Melaleuca in 1767 and the Scottish botanist Robert Brown first described the genus Callistemon in 1814. As early as 1864 Ferdinand von Mueller, the German-Australian born physician, geographer and botanist who eventually became director of the Royal Botanic Gardens, Melbourne, noted that the difference between the genera was artificial and proposed to unite Callistemon and Melaleuca but it was not until 1998 that some plants in New Caledonia previously described as Callistemon were reclassified as Melaleuca by Australian botanist Dr. Lyndley Alan Craven of the Australian National Herbarium and New Zealand botanist Dr. John Wyndham Dawson. In 2006, using DNA evidence Craven reclassified nearly all species of Callistemon as Melaleuca in his article "New combinations in Melaleuca for Australian species of Callistemon" in Novon (V14 N4) and in 2009 he summarized this in a statement in an article titled "Melaleuca (Myrtaceae) from Australia" in Novon (V19 N4) noting that "During revisionary work directed toward the preparation of an account of Melaleuca L. and it closer allies for the Flora of Australia, the delimitation of Callistemon R. Brown from Melaleuca was considered. The conclusion was reached that Callistemon was insufficiently distinct from Melaleuca to be maintained at generic rank and those species which there was no valid name yet available in Melaleuca were transferred to that genus” (1).
Cultivation Notes: Plant in full sun to light shade. It is drought tolerant but performs best with some irrigation. Hardy to 20-25 degrees F , it can rebound after defoliation in temperatures down into the teens. It reportedly gets chlorotic in overly-wet soils but responds in these situations to chelated iron fertilizers. (1)
Ethnobotany:

Height: 0 - 5 feet
Width: 0 - 5 feet
Growth Rate: Moderate Growing
Grow Season: Summer
Flower Season: ForeSummer
Color: Red
Function: Screen
Spread: Non-spreading
Allergen: Non-allergenic
Invasive: Benign
Toxicity: Benign
Hardy: Semi-hardy
Water Use: Low water Use

Citations:
  1. https://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=296
  2. http://www.mswn.com/plants/database/?letter=B&name=Callistemon+viminalis
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Callistemon viminalis