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Summary
Bloom Color: Yellow.
Main Bloom Time: Early fall, Late summer, Mid summer. Form: Irregular or sprawling.
Physical Characteristics
Coreopsis gigantea is a PERENNIAL growing to 2.5 m (8ft 2in) at a medium rate.
See above for USDA hardiness. It is hardy to UK zone 8. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.
It is noted for attracting wildlife.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought. The plant can tolerate maritime exposure.
UK Hardiness Map
US Hardiness Map
Synonyms
Leptosyne gigantea.
Habitats
Cultivated Beds;
Edible Uses
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
None known
References More on Medicinal Uses
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Other Uses
Dye
An orange to red/orange dye is obtained from the flowers and stems[168].
Special Uses
Attracts Wildlife
References More on Other Uses
Cultivation details
Landscape Uses:Border, Container, Foundation, Seashore, Specimen. Succeeds in ordinary garden soil[1]. Prefers a fertile well-drained moisture retentive medium soil[111, 200]. Requires a sunny position[111, 200]. Established plants are drought resistant[1]. This species is not very cold hardy in Britain, tolerating temperatures down to about -3°c[200, 260]. It dislikes winter wet and so is also apt to die out over the winter if grown on clay soils[111]. It is best grown in a greenhouse in this country[1]. The cut flowers last well in water[260]. The flowers are loved by bees[260]. Special Features:Attracts birds, Attractive foliage, North American native, Attracts butterflies, Suitable for cut flowers.
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
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Propagation
Seed - sow March in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out into their permanent positions in the summer[111]. The seed can also be sown in an outdoor seedbed in mid spring. Once they are more than 15cm tall, plant the seedlings out into their permanent positions in the summer. Division in spring or autumn[111]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the summer or following spring. Cuttings of young basal shoots, May/June in a frame[200]. Harvest the shoots when they are about 10cm long with plenty of underground stem. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.
Other Names
If available other names are mentioned here
Found In
Countries where the plant has been found are listed here if the information is available
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
Expert comment
Author
(Kellogg.)Hall.
Botanical References
71200
Links / References
For a list of references used on this page please go here
Readers comment
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Subject : Coreopsis gigantea
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