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ROMNEYA coulteri
Commonly known as Matilija poppy
Huge white single poppy flowers, heavily scented
Further Reading....
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DeciduousUpright, suckering subshrub. Ovate to rounded, pinnatifid (with lobes) intensely glaucous, grey-green leaves to 12cm (5in) long, with 3-5 lance-shaped lobes. Produces solitary flowers to 12cm (5in) across, with prominent yellow stamens.
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White
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Height1-2.5m (3-8ft)
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SpreadIndefinite
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Hardy - cold winterHardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
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Full sun
ROMNEYA coulteri
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Additional FeaturesGood to knowProduces flowers over a long period in summer. Recommended for the back of a borderPests & DiseasesCaterpillars, verticillium wilt.Place of originUSA (southern California), northern Mexico.Youtube videoHttps://youtu.be/yUOOgU4ZkHc
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Flower ShapeCup-shapedShallowly cup-shaped.
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Garden Location/ConditionsBorderSuits a sunny borderSub-tropical / mediterranean
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HardinessFully hardy
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Pruning groupPruning group 4Suitable for: Deciduous trees and shrubs that flower on current year's growth or are grown for winter stem effect.
Pruning: Hard prune to a low permanent framework.
When: Annually in early Spring.
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Scented PlantsScented flowers
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Seasonal InterestSummer
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Soil ConditionsFertile well drained soilShelter from cold winds. Provide a dry winter mulch
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Cold weather damage to evergreen plants
Romneya - Growing Guide
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ABELIA x grandiflora 'Kaleidoscope'
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ABUTILON 'John Thompson'
Available from £16.50
ACACIA baileyana 'Purpurea'
Cootamundra wattle, Golden mimosa
Available from £18.50
CORDYLINE australis
New Zealand cabbage palm
Available from £14.00
CORONILLA valentina subsp glauca 'Citrina'
Available from £15.50
DRIMYS lanceolata
Aromatica, Mountain pepper
Available from £17.00
EUPHORBIA mellifera
Honey spurge
Available from £14.50
GALTONIA candicans
Summer hyacinth, Spire lily
Available from £13.50
HARDY FERNS Dryopteris wallichiana
Available from £14.50
HEMEROCALLIS 'Stella de Oro'
Daylily
Available from £12.50
MELIANTHUS major
Honey bush
Available from £6.00
MUSA basjoo
Japanese banana
Available from £19.00
SALVIA 'Amistad'
Available from £13.50
SALVIA fulgens
SEDUM spectabile
Ice plant
Available from £13.00
SOLANUM jasminoides 'Album'
Potato vine, Jasmine nightshade
Available from £15.50
VERBENA bonariensis
Available from £5.00
Useful extras...
Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00
Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00
Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00
Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
3 options from £3.00
Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries.
It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50
Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants.
Perfect used in conjunction with Rootgrow™.
Only £7.50