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How to Grow Marguerite Daisy

Argyranthemum frutescens

Half Hardy Warm Season Continuous Harvest

When to Start

Best started from plugs, corms, or slips. Pot up indoors 6 weeks before last frost, then plant out once soil reaches 10°C.

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Growth Stages

Flowering ~35d

Approximate days from start

Care Essentials

  • Feed weekly with a balanced liquid fertiliser from late spring through autumn to sustain continuous flowering.
  • Marguerites are among the longest-flowering patio plants. They thrive in containers with good drainage and full sun. Overwinter cuttings under glass for next year.

Companion Planting

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Growing Conditions

Min. soil temperature: 10°C+
Germination temperature: 16–21°C

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Spacing & Planting

Plant spacing 40 cm
Row spacing 45 cm
Sow depth 0.3 cm
Mature height 60 cm
Mature spread 50 cm

Space 35-45 cm apart in containers or borders. Allow good air circulation to prevent mildew.

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Care Guide

Feeding
Feed weekly with a balanced liquid fertiliser from late spring through autumn to sustain continuous flowering.
Watch for
  • Aphids
  • Powdery mildew
  • Crown rot in wet conditions

Pests & Diseases

Pest Aphids

Identification: Clusters of small green insects on shoot tips and flower buds, causing distorted growth and sticky honeydew

Organic treatment:
  • Blast off with a strong water jet
  • Spray with fatty acid-based insecticide
  • Encourage ladybirds and lacewings
Chemical treatment:
  • Spray with a contact insecticide containing deltamethrin
Disease Powdery Mildew

Symptoms: White powdery coating on leaves, particularly in late summer when nights are cool and days warm

Treatment: Remove badly affected leaves. Improve air circulation. Spray with a fungicide if severe.

Prevention: Space plants well, water at soil level, avoid drought stress

Disease Crown Rot

Symptoms: Plant wilts despite moist soil. Base of stems turns brown and mushy. Roots are dark and rotten.

Treatment: Remove and destroy affected plants. Do not compost. Improve drainage for replacements.

Prevention: Ensure excellent drainage. Do not overwater. Avoid burying the crown when planting.

Growing Conditions

Min. soil temperature10°C
Germination temperature16–21°C
Base growth temperature7°C
Min. daylength to start12h
Photoperiod sensitivityday neutral

Frequently Asked Questions

How far apart should I plant Marguerite Daisy?
Plant Marguerite Daisy 40cm apart with 45cm between rows.
When does Marguerite Daisy flower?
Marguerite Daisy typically flowers approximately 35 days after transplanting.
Is Marguerite Daisy frost hardy?
Marguerite Daisy is classified as Half Hardy.

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