Chrysanthemum 'Mary Stoker' (Chrysanthemum 'Mary Stoker' )

Botanical name

Chrysanthemum 'Mary Stoker'

Other names

Chrysanthemum 'Mary Stoker' , Rubellum Group chrysanthemum 'Mary Stoker'

Genus

Chrysanthemum Chrysanthemum

Variety or Cultivar

'Mary Stoker' _ 'Mary Stoker' is an upright, bushy, clump-forming, woody-based perennial with pinnate, dark green leaves and, in late summer and early autumn, single, pink-flushed, yellow flowers with green centres that turn yellow as the florets open.

Foliage

Deciduous

Fragrance

Leaves are aromatic.

Habit

Bushy, Upright

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Colour

Flower

Yellow, Flushed pink in Summer; Yellow, Flushed pink in Autumn

Foliage

Dark-green in Spring; Dark-green in Summer

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How to care

Watch out for

Specific pests

Aphids , Capsid bug , Eelworms (leaf and bud) , Glasshouse red spider mite , Glasshouse whitefly

Diseases

In addition to these diseases, a virus may cause stunting and leaf markings. In wet weather fungal rots may occur.

Specific diseases

Powdery mildew , Chrysanthemum white rust , Grey mould

General care

Pruning

Pinch out the growing tips when plants are 15-20cm tall to encourage bushy plants and disbud as required to form large flower heads. Deadheading is optional. Divide and replant every 3-4 years to maintain vigour.

Propagation methods

Softwood cuttings

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Monthly care advice

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Where to grow

Chrysanthemum 'Mary Stoker' (Chrysanthemum 'Mary Stoker' ) will reach a height of 0.75m and a spread of 0.6m after 1-2 years.

Suggested uses

Beds and borders, Containers, Flower Arranging

Cultivation

Grow in fertile, well-drained soil in full sun. Encrich soil with organic matter & fertiliser. Water in dry periods. May require staking. Apply a thick winter mulch. In cold areas, lift crowns and store in a greenhouse.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, East

Exposure

Sheltered

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

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

Defra's Risk register #1

Plant name

Chrysanthemum 'Mary Stoker' (Chrysanthemum 'Mary Stoker' )

Common pest name

Scientific pest name

Phenacoccus solani

Type

Insect

Current status in UK

Unknown

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

4

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

3

General biosecurity comments

Watching brief for potential impact on tomato production in the Mediterranean. Other southern European countries likely to be more at risk. Precautionary action will be taken on findings on planting material to protect glasshouse crops and botanical gardens.

Defra's Risk register #2

Plant name

Chrysanthemum 'Mary Stoker' (Chrysanthemum 'Mary Stoker' )

Common pest name

Green semi-looper

Scientific pest name

Chrysodeixis eriosoma

Type

Insect

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)

3

General biosecurity comments

Polyphagous moth pest which is morphologically identical to a pest already established in the UK in protected environments and being controlled by IPM. Not expected to cause greater impacts than other species of Chrysodeixis in the UK.

Defra's Risk register #3

Plant name

Chrysanthemum 'Mary Stoker' (Chrysanthemum 'Mary Stoker' )

Common pest name

American serpentine leaf miner; chrysanthemum leaf miner

Scientific pest name

Liriomyza trifolii

Type

Insect

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)

3

General biosecurity comments

Regulated pest already subject to review at the EU level (2013). Regularly intercepted in the trade.

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/