Tagetes tenuifolia 'Lemon Gem' (Signet marigold 'Lemon Gem')

Botanical name

Tagetes tenuifolia 'Lemon Gem'

Other names

Signet marigold 'Lemon Gem', Tagetes signata pumila

Genus

Tagetes Tagetes

Variety or Cultivar

'Lemon Gem' _ 'Lemon Gem' is a neat, compact, bushy, mounding annual with an abundance of single, golden blooms that will repeat all throughout summer.

Foliage

Deciduous

Habit

Bushy, Cushion or Mound Forming

Toxicity

Leaves may irritate skin allergies.

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Colour

Flower

Golden-yellow in Summer

Foliage

Grey-green in Summer

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How to care

Watch out for

Specific pests

Glasshouse red spider mite , Slugs , Snails

General care

Pruning

Dead-head all summer in order to get continuous blooming.

Propagation methods

Seed

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Monthly care advice

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Where to grow

Tagetes tenuifolia 'Lemon Gem' (Signet marigold 'Lemon Gem') will reach a height of 0.2m and a spread of 0.2m after 1-2 years.

Suggested uses

City, Beds and borders, Containers, Cottage/Informal

Cultivation

Plant in light, free-draining soil in full sun. Flowerheads can rot in very wet weather.

Soil type

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

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Partial Shade, 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, Zone 6

Defra's Risk register #1

Plant name

Tagetes tenuifolia 'Lemon Gem' (Signet marigold 'Lemon Gem')

Common pest name

Scientific pest name

Prodiplosis longifila

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)

5

General biosecurity comments

Polyphagous gall midge present in the Americas; where it causes damage to outdoor and glasshouse crops. Europe-wide PRA will consider its potential to establish and cause damage.

Defra's Risk register #2

Plant name

Tagetes tenuifolia 'Lemon Gem' (Signet marigold 'Lemon Gem')

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/