Silver Crest Plectranthus argentatus
Other Common Name(s):
- Phonetic Spelling
- plek-TRAN-thus ar-jen-TAY-tus
- Description
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Grown for attractive gray to silver foliage; flowers are pale blue to white. Argentatus means silvery in Latin.
Mass plant along borders, foundations, in containers on patios or as indoor houseplants.
Insects, Diseases, and Other Plant Problems: Scale, mealybugs, and mites on indoor plants. Root rot and leaf spots can be a problem.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- 'Silver Crest'
- 'Silver Shield'
- 'Silver Crest'
- 'Silver Crest', 'Silver Shield'
- Tags:
- Cultivars / Varieties:
-
- 'Silver Crest'
- 'Silver Shield'
- 'Silver Crest'
- 'Silver Crest', 'Silver Shield'
- Tags:
-
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Attributes:
- Genus:
- Plectranthus
- Species:
- argentatus
- Family:
- Lamiaceae
- Life Cycle:
- Annual
- Perennial
- Country Or Region Of Origin:
- Queensland to North East New South Wales
- Particularly Resistant To (Insects/Diseases/Other Problems):
- This plant is seldom damaged by deer.
- Dimensions:
- Height: 2 ft. 0 in. - 3 ft. 0 in.
- Width: 2 ft. 0 in. - 3 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Annual
- Herbaceous Perennial
- Houseplant
- Growth Rate:
- Rapid
- Maintenance:
- Medium
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Available Space To Plant:
- 12 inches-3 feet
- USDA Plant Hardiness Zone:
- 10a, 10b, 11a, 11b
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Flowers:
- Flower Color:
- Blue
- White
- Flower Inflorescence:
- Raceme
- Flower Value To Gardener:
- Showy
- Flower Bloom Time:
- Summer
- Flower Shape:
- Tubular
- Flower Petals:
- fused petals
- Flower Size:
- < 1 inch
- Flower Description:
- July to August upright termial racemes with 1/2" long flowers.
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Leaves:
- Leaf Color:
- Gray/Silver
- Green
- Leaf Feel:
- Soft
- Velvety
- Leaf Value To Gardener:
- Showy
- Leaf Type:
- Simple
- Leaf Arrangement:
- Opposite
- Leaf Shape:
- Ovate
- Leaf Margin:
- Crenate
- Hairs Present:
- Yes
- Leaf Length:
- 3-6 inches
- Leaf Description:
- Ovate, scalloped pointed-tipped opposite leaves up to 4" long and coverd with silvery hairs.
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Stem:
- Stem Color:
- Green
- Purple/Lavender
- Stem Is Aromatic:
- No
- Stem Cross Section:
- Square
- Stem Surface:
- Hairy (pubescent)
- Stem Description:
- Hairy green-purple stems
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Landscape:
- Landscape Location:
- Container
- Houseplants
- Patio
- Pool/Hardscape
- Small Space
- Landscape Theme:
- Rock Garden
- Design Feature:
- Border
- Foundation Planting
- Resistance To Challenges:
- Deer
- Dry Soil
