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Dendrobium phalaenopsis (Cooktown orchid)

Advanced
skill rating
2 hours care
per year
0.8m
Max height
0.5m
Max spread
5-10 years
To maturity

Plant details

Botanical name

Dendrobium phalaenopsis

Other names

Cooktown orchid, Dendrobium bigibbum var. superbum, Dendrobium bigibum var. phalaenopsis

Genus

Dendrobium Dendrobium

Species

D. phalaenopsis - D. phalaenopsis is a perennial orchid with green, lance shaped leaves and a tall stem with pinkish-mauve to lavender or purple and sometimes almost white flowers. In the wild it blooms in the dry season, and indoors it blooms throughout the year.


Dendrobium phalaenopsis is: Evergreen

Habit

Upright

Flower

White, Flushed yellow, Flushed purple in All seasons

Foliage

Green in All seasons

How to care

Watch out for

Specific pests

Aphids , Glasshouse red spider mite , Mealybugs , Scale insects Aphids , Glasshouse red spider mite , Mealybugs , Scale insects

Diseases

May suffer from virus.

General care

Pruning

After flowering the spike can be cut down, if it is healthy, by two nodes (below the top two spent blooms) to produce further flowers. Do not allow these plants to dry out for long. Allow excess water to drain away.

Propagation

Propagate by seed in spring at 15ºC to 18ºC, or by softwood cuttings. Mature plants can be divided.

Propagation methods

Division, Seed, Softwood cuttings


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Where to grow

Dendrobium phalaenopsis (Cooktown orchid) will reach a height of 0.8m and a spread of 0.5m after 5-10 years.

Suggested uses

Containers, Greenhouse, Indoor

Cultivation

Plant in a shallow container filled with orchid compost. Keep a minimum night temperature of 16-19°C (61-66ºF). If the plant doesn't produce flower spikes, reduce the temperature by 5°C for four weeks to encourage blooms.

Soil drainage

Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade

Aspect

North, East

Exposure

Sheltered

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

Indoor heated (H1), Indoor unheated (H2)

Companion plants

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

Botanical name

Dendrobium phalaenopsis

Other names

Cooktown orchid, Dendrobium bigibbum var. superbum, Dendrobium bigibum var. phalaenopsis

Genus

Dendrobium Dendrobium

Species

D. phalaenopsis - D. phalaenopsis is a perennial orchid with green, lance shaped leaves and a tall stem with pinkish-mauve to lavender or purple and sometimes almost white flowers. In the wild it blooms in the dry season, and indoors it blooms throughout the year.

Foliage

Evergreen

Habit

Upright


Colour

Flower

White, Flushed yellow, Flushed purple in All seasons

Foliage

Green in All seasons


How to care

Watch out for

Specific pests

Aphids , Glasshouse red spider mite , Mealybugs , Scale insects

Diseases

May suffer from virus.

General care

Pruning

After flowering the spike can be cut down, if it is healthy, by two nodes (below the top two spent blooms) to produce further flowers. Do not allow these plants to dry out for long. Allow excess water to drain away.

Propagation

Propagate by seed in spring at 15ºC to 18ºC, or by softwood cuttings. Mature plants can be divided.

Propagation methods

Division, Seed, Softwood cuttings


Monthly care advice


Where to grow

Dendrobium phalaenopsis (Cooktown orchid) will reach a height of 0.8m and a spread of 0.5m after 5-10 years.

Suggested uses

Containers, Greenhouse, Indoor

Cultivation

Plant in a shallow container filled with orchid compost. Keep a minimum night temperature of 16-19°C (61-66ºF). If the plant doesn't produce flower spikes, reduce the temperature by 5°C for four weeks to encourage blooms.

Soil drainage

Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade

Aspect

North, East

Exposure

Sheltered

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

Indoor heated (H1), Indoor unheated (H2)

Defra's Risk register #1

Plant name

Dendrobium phalaenopsis (Cooktown orchid)

Common pest name

Scientific pest name

Orchidophilus spp.

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)

4

General biosecurity comments

A pest of orchids spreading in trade. Currently absent from the UK and unlikely to establish outdoors. Could cause severe damage to hosts growing in protected cultivation.

Defra's Risk register #2

Plant name

Dendrobium phalaenopsis (Cooktown orchid)

Common pest name

Rice leaf nematode; Strawberry crimp disease nematode; White tip nematode; White tip nematode of rice

Scientific pest name

Aphelenchoides besseyi

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)

3

General biosecurity comments

Damaging nematode affecting rice crops and strawberry production in warmer climates; could potentially present a threat to strawberry production and ornamental production in protected environments. But modern production practices seem to reduce likelihood of impacts. Pest is also regulated at EU level; which reduces likelihood of entry.

Defra's Risk register #3

Plant name

Dendrobium phalaenopsis (Cooktown orchid)

Common pest name

common blossom thrips; cotton bud thrips; tomato thrips

Scientific pest name

Frankliniella schultzei

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

Polyphagous glasshouse pest; present in many countries; single finding in UK.

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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This plant likes... Garden match
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Neutral Tell us...
Light: Partial Shade Tell us...
Aspect: North, East Tell us...
Exposure: Sheltered Tell us...
Hardiness: Indoor heated (H1), Indoor unheated (H2) Tell us...

GARDENS WITH THIS PLANT

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Robert Kay

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