5 Essential Gardening Jobs You Shouldn’t Skip in May
As May arrives, gardens across the UK begin to shift into a completely new gear. Longer days, warmer temperatures and the promise of summer growth make this one of the most important months in the gardening calendar. Get things right now, and you’ll be rewarded with healthy plants, strong yields and vibrant outdoor spaces. Miss a few key jobs, however, and you could spend the rest of the season playing catch-up.
Whether you’re growing vegetables, tending to borders or simply trying to get your outdoor space looking its best, these are the essential tasks you shouldn’t ignore this month.
1. Help Your Plants Adjust to the Outdoors
If you’ve been nurturing seedlings indoors, now is the moment to start introducing them to life outside. But it’s not as simple as planting them straight into the ground.
Gradual exposure is key. By placing plants outdoors for a few hours each day and slowly increasing that time over a week or two, you allow them to adapt to wind, temperature changes and direct sunlight. Skip this step, and you risk shocking your plants—potentially stunting growth or losing them entirely.
2. Clear Away the Remains of Spring
Spring storms often leave behind a trail of fallen leaves and blossom, and while it may look harmless, it can quickly become a problem.
Damp debris creates the perfect conditions for mould and slippery surfaces, particularly on decking and patios. A quick tidy now not only keeps your garden looking fresh but also helps maintain safety and prevents longer-term issues.
3. Thin Out Seedlings for Better Results
It might feel counterproductive to remove young plants, but thinning seedlings is one of the most important steps for a successful harvest.
When crops like carrots, beetroot and lettuce are overcrowded, they compete for light, water and nutrients. The result? Weak, spindly growth and disappointing yields.
The trick is to wait until seedlings develop their first “true” leaves, then carefully snip the smaller ones at soil level rather than pulling them out. It’s a small job that makes a huge difference to the quality of what you grow.
4. Set Up Plant Supports Early
Fast-growing plants won’t wait for you to catch up. By the time stems are long and roots are established, it’s often too late to add supports without causing damage.
Installing canes, frames or trellises early keeps plants upright, improves airflow and makes harvesting much easier later on. Tomatoes, peas and beans, in particular, will benefit from a bit of structure from the start—and your garden will look far more organised as a result.
5. Be Careful Before You Cut Back Hedges
This is one job that requires a little extra thought. May sits firmly within bird nesting season, and disturbing an active nest is actually an offence in the UK.
Before trimming hedges or shrubs, take a moment to check for signs of activity—watch for birds coming and going or listen for the sound of chicks. If there’s any doubt, it’s best to wait until later in the year.
A Quick Bonus Tip: Don’t Forget the Lawn
As the weather warms, lawns start to dry out and grow more vigorously. This is the ideal time to lower your mower blade slightly and achieve that neat, summer-ready finish. Just be mindful—if conditions turn dry later in the season, you’ll need to raise it again to protect the grass.
The Bottom Line
May is a month of opportunity in the garden. It’s when small, thoughtful actions can set the tone for everything that follows. From preparing your plants for outdoor life to staying mindful of wildlife, these jobs aren’t just seasonal chores—they’re the foundation of a thriving, beautiful space all summer long.
Original expert insights by Simon Parry, outdoor living specialist and owner of Simon Parry Landscaping and Gardening.
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