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Heteropappus hispidus 'Blue Knoll' (Blue chyrsanthemum 'Blue Knoll')
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1 hour care
per year
per year
0.3m
Max height
Max height
0.45m
Max spread
Max spread
1-2 years
To maturity
To maturity
Low
Toxicity
Toxicity
Plant details
Botanical name
Heteropappus hispidus 'Blue Knoll'
Other names
Blue chyrsanthemum 'Blue Knoll', Heteropappus meyendorffii 'Blue Knoll'
Genus
Heteropappus Heteropappus
Variety or Cultivar
'Blue Knoll' _ 'Blue Knoll' is a half-hardy, mound-forming perennial, often grown as an annual, with upright stems bearing linear, grey-green leaves and, in autumn, blue flower heads with yellow central discs.
Heteropappus hispidus 'Blue Knoll' is: Evergreen
Habit
Cushion or Mound Forming
Toxicity
May cause mild stomach upset if ingested. Avoid contact with eyes.
Flower
Blue in Autumn
Foliage
Green in All seasons
How to care
Watch out for
Specific pests
Aphids Aphids
General care
Pruning
Pinch out growing tips to maintain compact, bushy habit. Deadhead regularly to prolong flowering.
Propagation methods
Seed, Softwood cuttings
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Where to grow
Heteropappus hispidus 'Blue Knoll' (Blue chyrsanthemum 'Blue Knoll') will reach a height of 0.3m and a spread of 0.45m after 1-2 years.
Suggested uses
Garden edging, Edging, Cottage/Informal, Containers, Between paving stones, Beds and borders, Greenhouse, Ground Cover, Lawn
Cultivation
Grow in fertile, moist soil in full sun. In frost-prone areas, plant out after last frost. Under glass, grow in loam-based compost in full light. Water moderately & feed monthly; sparingly in winter.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moisture-retentive, Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Heteropappus hispidus 'Blue Knoll'
Other names
Blue chyrsanthemum 'Blue Knoll', Heteropappus meyendorffii 'Blue Knoll'
Genus
Heteropappus Heteropappus
Variety or Cultivar
'Blue Knoll' _ 'Blue Knoll' is a half-hardy, mound-forming perennial, often grown as an annual, with upright stems bearing linear, grey-green leaves and, in autumn, blue flower heads with yellow central discs.
Foliage
Evergreen
Habit
Cushion or Mound Forming
Toxicity
May cause mild stomach upset if ingested. Avoid contact with eyes.
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Colour
Flower
Blue in Autumn
Foliage
Green in All seasons
How to care
Watch out for
Specific pests
General care
Pruning
Pinch out growing tips to maintain compact, bushy habit. Deadhead regularly to prolong flowering.
Propagation methods
Seed, Softwood cuttings
Monthly care advice
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Where to grow
Heteropappus hispidus 'Blue Knoll' (Blue chyrsanthemum 'Blue Knoll') will reach a height of 0.3m and a spread of 0.45m after 1-2 years.
Suggested uses
Garden edging, Edging, Cottage/Informal, Containers, Between paving stones, Beds and borders, Greenhouse, Ground Cover, Lawn
Cultivation
Grow in fertile, moist soil in full sun. In frost-prone areas, plant out after last frost. Under glass, grow in loam-based compost in full light. Water moderately & feed monthly; sparingly in winter.
Soil type
Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage
Moisture-retentive, Moist but well-drained
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, West
Exposure
Exposed, Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Tender in frost (H3)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy, Sandy (will tolerate most soil types) | Tell us... |
| Soil drainage: | Moisture-retentive, Moist but well-drained | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South, West | Tell us... |
| Exposure: | Exposed, Sheltered | Tell us... |
| Hardiness: | Tender in frost (H3) | Tell us... |
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