What to Plant in May in Ireland (Complete Guide)
Get Your Garden Growing This Month
May is one of the most rewarding months in the gardening calendar. With longer days, milder temperatures and improved soil conditions, it’s the perfect time to plant a wide range of vegetables, flowers and herbs.
Whether you’re starting from scratch or building on your spring garden, planting in May sets you up for a productive and colourful summer.
With the right seeds, compost and a little preparation, you can transform your garden in just a few weeks.
Below is our expert guide on what to plant in May in Ireland, along with helpful tips to get the best results.
Step 1: Prepare Your Soil for Planting
Before sowing any seeds, it’s important to make sure your soil is ready:
- Remove weeds and stones
- Loosen the soil using a fork or hoe
- Add compost or organic matter to improve nutrients
- Rake the surface to create a fine, level seedbed
Good soil preparation helps seeds establish quickly and grow stronger.
Top Tip: Avoid planting in waterlogged soil — wait for a dry day to get the best results.
🛒 Recommended Products for Soil Preparation
- Jack's Magic All Purpose Compost (Peat Reduced) - 💰 €9.99
- Buildsure Long Handle Digging Fork 💰 €16.95
Step 2: What Vegetables to Plant in May
May is ideal for sowing many popular vegetables directly outdoors.
Easy Vegetables to Plant Now:
- Carrots – Sow directly into the soil for a summer harvest
- Lettuce – Quick-growing and perfect for continuous sowing
- Onions – Plant sets for reliable results
- Beetroot – Great for beginners and grows well in Irish soil
- Peas – Thrive in cooler Irish conditions
- Potatoes – Continue planting maincrop varieties
We stock a wide range of Unwins vegetable seeds (from €2.43), known for their high quality and reliable germination — perfect for both beginners and experienced gardeners.
Step 3: Add Colour with Summer Flowers
May is the perfect time to plant flowers that will bloom throughout summer.
Top Flower Choices for May:
- Marigolds – Bright, easy to grow and great for pollinators
- Petunias – Ideal for pots, baskets and borders
- Sunflowers – A fun and fast-growing favourite
- Wildflower mixes – Low-maintenance and great for biodiversity
Our range of Unwins flower seeds and bulbs (from €2.99) offers a wide selection to bring colour and life to any garden.
For a more natural and low-maintenance display, wildflower mixes are a great option. Simply scatter over prepared soil and enjoy a colourful mix of flowers that attract bees and butterflies throughout the summer.
We recommend the Westland Nature's Haven Easy Wildflower Mix, which is ideal for creating a vibrant, wildlife-friendly garden with minimal effort.
Step 4: Grow Your Own Herbs
Herbs are easy to grow and perfect for patios, containers or garden beds.
Best Herbs to Plant in May:
- Basil – Best grown in a sunny, sheltered spot
- Parsley – Hardy and easy to maintain
- Mint – Fast-growing (best kept in pots)
- Chives – Great for adding flavour to dishes
Fresh herbs are a simple way to enhance your cooking while making the most of your garden space.
Step 5: Keep Your Garden Growing Strong
Once planted, regular care is key:
- Water consistently, especially during dry spells
- Thin seedlings to give plants room to grow
- Protect young plants from pests
- Feed with fertiliser as needed
Staying on top of maintenance now will lead to stronger, healthier plants in the weeks ahead.
🛒 Recommended Garden Care Products
- Miracle Gro Plant Food 1.2kg - 💰 €9.99
- Aquaplus Green Watering Can 10L - 💰 €11.99
Why May is the Best Time to Plant
- Warmer soil temperatures improve germination
- Longer daylight hours encourage faster growth
- Lower risk of frost damage
- Ideal conditions for a wide variety of plants
- Sets your garden up for a productive summer
Planting in May allows you to take full advantage of the growing season.
Need Advice? Ask Our Team of Experts at The Hardware Shop
Choosing the right seeds, compost or tools can make all the difference when starting your garden. Our experienced team is always on hand to help you get the best results.
We stock a full range of Unwins seeds and bulbs, along with everything you need to get planting this May.
🔗 Shop our range of seeds online - HERE
📍 Visit us in-store - Topline Tractamotors, Cavan
