Plectranthus argentatus: Country Or Region Of Origin
Queensland to North East New South Wales
Plant Profile: Plectranthus argentatus
Names
Silver Crest, Silver Plectranthus, Silver Spur Flower
Phonetic Spelling:plek-TRAN-thus ar-jen-TAY-tus
Genus:Plectranthus
Species:argentatus
Family:Lamiaceae
This plant is valued for its striking gray to silver leaves, while its flowers range from pale blue to white. The term "Argentatus" is derived from Latin, meaning silvery.
It is ideal for mass planting along borders, at building foundations, in patio containers, or even as houseplants indoors.
Potential issues include pests such as scale, mealybugs, and mites on indoor varieties. Additionally, root rot and leaf spots may pose challenges.
Plectranthus argentatus Feature Summary
Plectranthus argentatus Image Gallery
Tags
#showy flowers
#houseplant
#annual
#shade garden
#showy leaves
#interiorscape
#interesting leaves
#deer resistant
#foundation planting
#borders
#hairy leaves
#hairy stems
#patio planting
#dry soils tolerant
#container plants
Similar Plants
Plectranthus argentatus is often confused with:
Plectranthus argentatus Feature Summary
Attributes
Queensland to North East New South Wales
This plant is seldom damaged by deer.
Perennial
Annual
Flowers
July to August upright termial racemes with 1/2" long flowers.
White
Blue
Raceme
Summer
fused petals
Tubular
< 1 inch
Leaves
Ovate, scalloped pointed-tipped opposite leaves up to 4" long and coverd with silvery hairs.
Green
Gray/Silver
Simple
Opposite
Ovate
Crenate
3-6 inches
Soft
Velvety
Stem
Hairy green-purple stems
Purple/Lavender
Green
Square
Hairy (pubescent)
Whole Plant Traits
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
12 inches-3 feet
10a
10b
11a
11b
Landscape
Rock Garden
Border
Foundation Planting
Deer
Dry Soil
Container
Patio
Small Space
Houseplants
Pool/Hardscape
Plectranthus argentatus Image Gallery
Plectranthus argentatus Attributes
Plectranthus argentatus: Particularly Resistant To (Insects/Diseases/Other Problems)
This plant is seldom damaged by deer.
Plectranthus argentatus: Life Cycle
Annual
Biennial
Bulb
Perennial
Woody
Plectranthus argentatus Flowers
Plectranthus argentatus: Flower Description
July to August upright termial racemes with 1/2" long flowers.
Plectranthus argentatus: Flower Color
Blue
White
Plectranthus argentatus: Flower Inflorescence
Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel
Plectranthus argentatus: Flower Value To Gardener
Edible
Fragrant
Good Cut
Good Dried
Long Bloom Season
Long-lasting
Showy
Plectranthus argentatus: Flower Bloom Time
Winter
Spring
Summer
Fall
Plectranthus argentatus: Flower Petals
2-3 rays/petals
4-5 petals/rays
6 petals/rays
7 - 20 petals/rays
asymmetrical petals
Bracts
Colored Sepals
fused petals
more than 20 petals/rays
Tepals
Plectranthus argentatus: Flower Shape
Bell
Cross
Crown
Cup
Dome
Funnel
Irregular
Lipped
Radial
Saucer
Star
Trumpet
Tubular
Urn
Wheel
Plectranthus argentatus: Flower Size
1-3 inches
3-6 inches
< 1 inch
> 6 inches
Plectranthus argentatus Leaves
Plectranthus argentatus: Leaf Description
Ovate, scalloped pointed-tipped opposite leaves up to 4" long and coverd with silvery hairs.
Plectranthus argentatus: Leaf Color
Gray/Silver
Green
Plectranthus argentatus: Leaf Type
Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple
Plectranthus argentatus: Leaf Arrangement
Alternate
Opposite
Other/more complex
Rosulate
Whorled
Plectranthus argentatus: Leaf Shape
Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate
Plectranthus argentatus: Leaf Margin
Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate
Plectranthus argentatus: Hairs Present
No
Yes
Plectranthus argentatus: Leaf Length
< 1 inch
1-3 inches
3-6 inches
> 6 inches
Plectranthus argentatus: Leaf Feel
Fleshy
Glossy
Leathery
Papery
Prickly
Rough
Rubbery
Slippery
Smooth
Soft
Velvety
Waxy
Plectranthus argentatus: Leaf Value To Gardener
Edible
Fragrant
Good Cut
Good Dried
Long-lasting
Showy
Plectranthus argentatus Stem
Plectranthus argentatus: Stem Description
Hairy green-purple stems
Plectranthus argentatus: Stem Color
Green
Purple/Lavender
Plectranthus argentatus: Stem Is Aromatic
No
Yes
Plectranthus argentatus: Stem Cross Section
Angular
Oval
Round
Square
Plectranthus argentatus: Stem Surface
Corky Ridges
Covered with a powdery bloom (glaucous)
Dull
Hairy (pubescent)
Polished
Smooth (glabrous)
Plectranthus argentatus Whole Plant Traits
Plectranthus argentatus: Plant Type
Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower
Plectranthus argentatus: Growth Rate
Slow
Medium
Rapid
Plectranthus argentatus: Maintenance
Low
Medium
High
Plectranthus argentatus Cultural Conditions
Plectranthus argentatus: Light
Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Plectranthus argentatus: Available Space To Plant
12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet
Plectranthus argentatus: USDA Plant Hardiness Zone
10a
10b
11a
11b
Plectranthus argentatus Landscape
Plectranthus argentatus: Landscape Theme
Asian Garden
Butterfly Garden
Children's Garden
Cottage Garden
Cutting Garden
Drought Tolerant Garden
Edible Garden
English Garden
Fairy Garden
Garden for the Blind
Native Garden
Nighttime Garden
Pollinator Garden
Rain Garden
Rock Garden
Shade Garden
Water Garden
Winter Garden
Plectranthus argentatus: Design Feature
Accent
Barrier
Border
Flowering Tree
Foundation Planting
Hedge
Mass Planting
Screen/Privacy
Security
Shade Tree
Small groups
Small Tree
Specimen
Street Tree
Understory Tree
Plectranthus argentatus: Resistance To Challenges
Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind
Plectranthus argentatus: Landscape Location
Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland
