Datura metel 'Double Blackcurrant Swirl' (Downy thorn apple 'Double Blackcurrant Swirl')

Botanical name

Datura metel 'Double Blackcurrant Swirl'

Other names

Downy thorn apple 'Double Blackcurrant Swirl', Horn of plenty 'Double Blackcurrant Swirl', Angel's trumpet 'Double Blackcurrant Swirl'

Genus

Datura Datura

Variety or Cultivar

'Double Blackcurrant Swirl' _ 'Double Blackcurrant Swirl' is a tender, upright, deciduous perennial, often grown as an annual in cold areas, with large, elliptic to broadly ovate, dark green leaves and, from midsummer into autumn, fragrant, trumpet-shaped, double white flowers, heavily flushed dark purple.

Foliage

Deciduous

Fragrance

Flowers are scented at night.

Habit

Upright, Clump-forming

Toxicity

All parts are highly toxic if ingested.

---

Colour

Flower

Flushed purple, White in Summer; White, Flushed purple in Autumn

---

How to care

Watch out for

Specific pests

Glasshouse red spider mite , Glasshouse whitefly , Mealybugs , Scale insects , Thrips

Diseases

Generally disease-free.

General care

Propagation methods

Seed, Semi-hardwood cuttings

---

Monthly care advice

---

Where to grow

Datura metel 'Double Blackcurrant Swirl' (Downy thorn apple 'Double Blackcurrant Swirl') will reach a height of 1.2m and a spread of 0.9m after 10-20 years.

Suggested uses

Architectural, Conservatory, Containers, Indoor, Sub-Tropical

Cultivation

Plant outdoors in moist, but well-drained, soil in a sheltered, frost-free area in full sun. Or grow under glass inside, in loam-based compost.

Soil type

Chalky, Clay, Loamy, Sandy (will tolerate most soil types)

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Indoor heated (H1), Tender in frost (H3)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7

Defra's Risk register #1

Plant name

Datura metel 'Double Blackcurrant Swirl' (Downy thorn apple 'Double Blackcurrant Swirl')

Common pest name

; Black wood of grapevine; Female sterility of tobacco; Fruit woodiness of tomato; Maize Redness; Mal azul of tomato; Metabolbur; Metastolbur; Parastolbur; Purple top of potato; Stolbur of potato; Stolbur of tobacco; Stolbur of tomato

Scientific pest name

Candidatus Phytoplasma solani

Type

Phytoplasma

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

3

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Phytoplasma which potentially affects a wide host range; determined by the feeding behaviour of vectors. First UK outbreak in 2014; on strawberry; a host not specifically regulated in EU legislation. This legislation should be reviewed to take account of this and other developments.

Defra's Risk register #2

Plant name

Datura metel 'Double Blackcurrant Swirl' (Downy thorn apple 'Double Blackcurrant Swirl')

Common pest name

Lance nematode; Nematode; Lance

Scientific pest name

Hoplolaimus spp.

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Nematode species potentially affecting a wide variety of crops; prohibition of soil likely to mitigate risk substantially; keep under review in light of interceptions or findings should they occur in the EU.

Defra's Risk register #3

Plant name

Datura metel 'Double Blackcurrant Swirl' (Downy thorn apple 'Double Blackcurrant Swirl')

Common pest name

Scientific pest name

Xiphinema bakeri

Type

Nematode

Current status in UK

Absent

Likelihood to spread to UK (1 is very low - 5 is very high)

2

Impact (1 is very low - 5 is very high)

4

General biosecurity comments

Nematode pest; could potentially affect trees and other species if introduced but many pathways regulated. No evidence of interceptions or findings to date.

About this section

Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.

Traveling or importing plants? Please read "Don't risk it" advice here

Suspected outbreak? Click here for contact details to report to the relevant authority.

Date updated: 7^th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/