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The Best Flowers to Plant in March for a Colourful Spring Garden

As the days grow longer and the chill of winter fades, March is the perfect time to start planting vibrant flowers that will bring colour and life to your garden. Whether you’re filling flower beds, borders, or containers, choosing the right plants for early spring will set the stage for a stunning display throughout the season.

Here’s a guide to the best flowers to plant in March and how to help them thrive in your garden.

Why Plant Flowers in March?

March is a transitional month in the gardening calendar. As the soil begins to warm up, many hardy annuals, perennials, and bulbs can be planted outdoors, while more delicate flowers can be started indoors or in a greenhouse.

Planting in March ensures:

  • Early blooms for a long-lasting display
  • Stronger root systems for healthier plants
  • A head start on the growing season

1. Pansies & Violas – Cold-Resistant and Cheerful

Pansies and violas are hardy, colourful, and perfect for early spring. These small but vibrant flowers thrive in cooler temperatures and are ideal for borders, containers, and hanging baskets.

How to Plant:

  • Plant in well-drained soil with partial to full sun.

  • Keep the soil moist but not waterlogged.

  • Deadhead spent flowers to encourage continuous blooms.

Colours Available: Purple, yellow, orange, white, and mixed shades.

2. Primroses – A Classic Spring Favourite

Primroses are one of the first perennials to bloom, making them an excellent choice for March planting. Their bright, delicate flowers add instant colour to garden beds and shaded areas.

How to Plant:

  • Choose moist, well-drained soil in partial shade.

  • Water regularly, especially during dry spells.

  • Ideal for borders, rock gardens, and woodland-style gardens.

Colours Available: Pink, red, yellow, blue, and white.

3. Daffodils – A True Sign of Spring

If you didn’t plant daffodil bulbs in autumn, potted daffodils can still be planted in March. These low-maintenance flowers bring joyful yellow blooms that brighten any space.

How to Plant:

  • Plant in full sun or partial shade.

  • Ensure soil is well-draining to prevent rot.

  • Water occasionally and allow the foliage to die back naturally after flowering.

Varieties: Traditional yellow daffodils, white narcissus, and miniature varieties.

4. Sweet Peas – Fragrant and Fast-Growing

March is an ideal time to sow sweet pea seeds for beautiful, scented blooms in late spring and summer. These climbing plants are great for trellises, fences, and garden arches.

How to Plant:

  • Sow seeds in deep pots or directly into the ground.

  • Place in full sun with well-drained soil.

  • Water regularly and provide support for climbing.

Colours Available: Pink, purple, blue, white, and mixed pastels.

5. Forget-Me-Nots – A Carpet of Blue Beauty

Forget-me-nots are perfect for natural-looking gardens and wildflower beds. These tiny blue flowers self-seed and create a gorgeous blanket of colour.

How to Plant:

  • Scatter seeds in moist soil in a sunny or partially shaded spot.

  • Water gently and avoid over-fertilising.

  • Ideal for wildlife-friendly gardens.

Colours Available: Mostly blue, but also pink and white varieties.

6. Hardy Geraniums – Low-Maintenance and Long-Lasting

Hardy geraniums, also known as cranesbills, are tough perennials that thrive in UK gardens. They provide long-lasting flowers and require minimal care.

How to Plant:

  • Choose a sunny or partially shaded location.

  • Water regularly until established.

  • Trim back after flowering to encourage a second bloom.

Colours Available: Pink, purple, blue, and white.

7. Lupins – A Cottage Garden Essential

Lupins are tall, striking flowers that add a dramatic touch to garden borders. March is a great time to plant young lupin plants for a late spring display.

How to Plant:

  • Plant in full sun in well-drained soil.

  • Water moderately and avoid disturbing the roots.

  • Ideal for pollinator-friendly gardens.

Colours Available: Red, yellow, purple, pink, and bi-coloured varieties.

Tips for March Flower Planting Success

  • Check soil temperature – it should be warming up but not too wet.
  • Use mulch to retain moisture and suppress weeds.
  • Feed early bloomers with a balanced fertiliser to boost growth.
  • Protect delicate plants from unexpected frosts with cloches or fleece.
  • Water sparingly – spring rains usually provide enough moisture.

Get Your Garden Blooming with All Seasons Garden Maintenance

Need help preparing your garden for spring? At All Seasons Garden Maintenance, we provide expert garden services in Surrey, including flower planting, lawn care, pruning, and garden maintenance. Whether you need a one-time refresh or regular garden care, we’re here to help!

We cover Epsom, Ashtead, Banstead, Cheam, Leatherhead, Dorking, and surrounding areas.

Call us today on 01372 610566 or 07368 356520 to book your garden care service!