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Delphinium Pacific Giant Series (Delphinium Pacific Giant Series)

Intermediate
skill rating
2 hours care
per year
2m
Max height
1m
Max spread
2 years
To maturity
Low
Toxicity

Plant details

Botanical name

Delphinium Pacific Giant Series

Other names

Delphinium Pacific Giant Series, Delphinium 'Pacific Giant Mix', Delphinium 'Pacific Giant Mixed', Larkspur 'Pacific Giants'

Genus

Delphinium Delphinium

Variety or Cultivar

'Pacific Giant' _ 'Pacific Giant' is an upright, herbaceous perennial with divided, dark-green foliage. From late spring until mid summer it bears erect racemes of purple, blue, lavender or white flowers.


Delphinium Pacific Giant Series is: Deciduous

Habit

Clump-forming, Erect

Toxicity

All parts of the plant may cause severe discomfort if ingested. Contact with sap may cause skin irritation.

Flower

Blue, White, Purple, Lavender in Spring; Lavender, Blue, White, Purple in Summer

Foliage

Green in Spring; Green in Summer

How to care

Watch out for

Specific pests

Caterpillars , Slugs , Snails , Leaf-mining sawflies Caterpillars , Slugs , Snails , Leaf-mining sawflies

Diseases

May also be subject to a virus.

Black blotch of Delphinium , Crown rot , Powdery mildew Black blotch of Delphinium , Crown rot , Powdery mildew

General care

Pruning

Thin shoots when plant is 7cm high to 2-3 shoots on young plants and 5-7 shoots on established plants to promote best flowers. Deadhead by cutting spent flower spikes back to small flowering side shoots. Cut back to ground level in autumn.

Propagation

Divide every 3-4 years to maintain vigour.

Propagation methods

Basal cuttings, Division


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Where to grow

Delphinium Pacific Giant Series (Delphinium Pacific Giant Series) will reach a height of 2m and a spread of 1m after 2 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Flower Arranging

Cultivation

Plant in a fertile, well-drained soil in full sun. Apply a fortnightly balanced liquid feed during the growing season. May be short-lived in hot, humid conditions. Cut back if becomes infected with powdery mildew. Stake with bamboo canes in mid-sp

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

Exposure

Sheltered

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

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Delphinium Pacific Giant Series

Other names

Delphinium Pacific Giant Series, Delphinium 'Pacific Giant Mix', Delphinium 'Pacific Giant Mixed', Larkspur 'Pacific Giants'

Genus

Delphinium Delphinium

Variety or Cultivar

'Pacific Giant' _ 'Pacific Giant' is an upright, herbaceous perennial with divided, dark-green foliage. From late spring until mid summer it bears erect racemes of purple, blue, lavender or white flowers.

Foliage

Deciduous

Habit

Clump-forming, Erect

Toxicity

All parts of the plant may cause severe discomfort if ingested. Contact with sap may cause skin irritation.


Colour

Flower

Blue, White, Purple, Lavender in Spring; Lavender, Blue, White, Purple in Summer

Foliage

Green in Spring; Green in Summer


How to care

Watch out for

Specific pests

Caterpillars , Slugs , Snails , Leaf-mining sawflies

Diseases

May also be subject to a virus.

Specific diseases

Black blotch of Delphinium , Crown rot , Powdery mildew

General care

Pruning

Thin shoots when plant is 7cm high to 2-3 shoots on young plants and 5-7 shoots on established plants to promote best flowers. Deadhead by cutting spent flower spikes back to small flowering side shoots. Cut back to ground level in autumn.

Propagation

Divide every 3-4 years to maintain vigour.

Propagation methods

Basal cuttings, Division


Monthly care advice


Where to grow

Delphinium Pacific Giant Series (Delphinium Pacific Giant Series) will reach a height of 2m and a spread of 1m after 2 years.

Suggested uses

Beds and borders, City, Cottage/Informal, Flower Arranging

Cultivation

Plant in a fertile, well-drained soil in full sun. Apply a fortnightly balanced liquid feed during the growing season. May be short-lived in hot, humid conditions. Cut back if becomes infected with powdery mildew. Stake with bamboo canes in mid-sp

Soil type

Chalky, Loamy, Sandy

Soil drainage

Well-drained, Moist but well-drained

Soil pH

Alkaline, Neutral

Light

Full Sun

Aspect

South, East, West

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, Zone 3

Defra's Risk register #1

Plant name

Delphinium Pacific Giant Series (Delphinium Pacific Giant Series)

Common pest name

Scientific pest name

Phytophthora tentaculata Kröber & Marwitz - All Hosts

Type

Oomycete

Current status in UK

Absent

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

5

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

3

General biosecurity comments

Polyphagous pathogen present in parts of Europe and beyond.

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

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(20/06/2013)

(20/06/2013)

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Well-drained, Moist but well-drained Tell us...
Soil pH: Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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