Spring Planting Guide for the UK

What to plant in spring

August 06, 2025 | 8 min read
Colourful spring garden with blooming flowers and fresh green plants

As the days grow longer and the chill of winter starts to fade, spring offers a wonderful opportunity to revitalise your garden. Let's dive into how you can make the most of this season in your garden.

Quick Answer

Start planting hardy vegetables like potatoes and onions in March. Sow seeds of carrots and peas in April, and enjoy planting summer flowering bulbs in May.

Understanding the UK Spring Climate

The UK spring, particularly in the Midlands, brings a mix of mild temperatures and occasional frosts. It's crucial to keep an eye on weather forecasts and use protective measures like cloches or fleece when necessary. This careful monitoring ensures your plants aren't caught out by a late cold snap.

What to Plant in March

March is the time to focus on hardy vegetables and prepare for the growing season. The soil is warming up, but still cool.

  • Potatoes: Start with early varieties. Chit them indoors first by placing them in a light, frost-free spot until sprouts form.
  • Onions and Shallots: Plant sets directly into the ground, ensuring they're firm and well-spaced.
  • Broad Beans: Sow seeds directly outside if the weather is mild, or start them indoors in pots.

April Planting Tasks

By April, the soil is generally warmer, making it suitable for more tender crops.

Plant Method Notes
Carrots Sow seeds directly Thin seedlings to 5cm apart for best growth
Peas Sow seeds directly Use supports as plants grow
Spinach Sow seeds directly Harvest leaves regularly to encourage growth

May: Preparing for a Colourful Summer

May is a month of opportunity for both vegetables and flowers. The risk of frost is minimal, so you can be more adventurous.

  • Summer Flowering Bulbs: Plant bulbs like gladioli and dahlias for vibrant summer displays.
  • Tomatoes: Transfer young plants outdoors once the risk of frost has passed.
  • Courgettes and Pumpkins: Sow seeds directly or plant out seedlings for a prolific autumn harvest.

Tips for Successful Spring Planting

  • Soil Preparation: Dig in plenty of organic matter to improve soil structure and drainage.
  • Water Wisely: Water deeply once a week rather than little and often to encourage deep root growth.
  • Companion Planting: Use plants like marigolds to deter pests and attract beneficial insects.

Frequently Asked Questions

When should I start planting in spring in the UK?

Start planting hardy crops in March as the soil begins to warm. More tender plants can be sown from April onwards.

How can I protect my plants from late frosts?

Use cloches, fleece, or row covers to protect vulnerable plants during unexpected cold snaps.

What are some easy flowers to plant in spring?

Consider planting marigolds, pansies, and sweet peas for a burst of colour and ease of care.

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